Asteroids, Comets, Meteors, 2008

Total Page:16

File Type:pdf, Size:1020Kb

Asteroids, Comets, Meteors, 2008 Conference Program July t3-t8, 2008 · Baltimore, Maryland Hosted by Johns Hopkins University Applied Physics Laboratory Co-Sponsored by Lunar and Planetary Institute National Aeronautics and Space Administration Jet Propulsion Laboratory Planetary Science Institute Lockheed Martin Scientific Organizing Committee Chair: Andrew Rivkin, JHU/APL Antonella Barucci, Observatory ofParis, Meudon William Bottke, Southwest Research Institute Ted Bowell, Lowell Observatory Beth Clark, Ithaca College Guy Consolmagno, Vatican Observatory Alan Harris, Space Science Institute Sue Lederer, California State University, San Bernardino Thais Mothe-Diniz, National Observatory, Brazil Keith Noll, Space Telescope Science Institute Juinichi Watanabe, National Astronomical Observatory, Japan Mike Zolensky, NASA Johnson Space Center Local Organizing Committee Chair: Andy Cheng, JHU/APL Ted Bowell, Lowell Observatory Nancy Chabot, JHU/APL Neil Della Russo, JHU/APL Paul Feldman, Johns Hopkins University Alan Harris, Space Science Institute Mike Mumma, NASA Goddard Space Flight Center Hal Weaver, JHU/APL Guide to sessions July 13-18, 2008 · Baltimore, Maryland Monday, July 14, 2008 8:00 a.m. Harborside DIE Introduction and Preliminaries 8:30 a.m. Harborside DIE Binaries I: Creation and Destruction 10:30 a.m. Harborside DIE Comet Schwassmann-W achmann 3: Fragmentary Information 1:30 p.m. Harborside DIE Meteors I 4:00 p.m. Laurel and Poster Session I Kent Rooms Holmes, Tuttle, and SW3 Vesta and Its Vestiges Meteors Asteroid Lightcurves: Out for a Spin Cometary Observations from X-Ray to Radio Sizes and Albedos: Singles and Groups Asteroid Shapes and Photometry (With a Touch of YORP) Modeling Comets Binary and Multiple Systems Collision and Collisional Evolution: Experiments and Modeling Tuesday, July 15, 2008 8:00 a.m. Harborside DIE Small Bodies: The Starting Blocks 10:30 a.m. Harborside DIE Lightcurves and Photometry 1:30 p.m. Harborside D Family Matters 3:00 p.m. Comets: Observations from Space 1:45 p.m. Harborside E Meteors II: Focus on the Caranacas Impact of 2007 4:00 p.m. Harborside D Comet See: Comme <;a 4:00 p.m. Harborside E When (Small) Worlds Collide Wednesday, July 16, 2008 8:00 a.m. Harborside DIE Interrelations I: Main Belt Comets and Other Cousins 10:30 a.m. Harborside DIE The Outer Limits 1:30 p.m. Harborside DIE Missions: Recent, En Route, Planned, and Hoped-For Wednesday, July t6, 2008 (continued) 4:00 p.m. Laurel and Poster Session II Kent Rooms Future Mission Instruments and Techniques Upcoming Missions and Mission Support Observations Asteroid Spectroscopy: Compositions and Space Weathering Near-Earth and Main-Belt Surveys Dynamics Rosetta Small Body Geology TNOs and Centaurs: Surveys, Colors, Compositions, and Activity Mission Concepts Comet Tempel 1 and Deep Impact Interrelations Thursday, July 17, 2008 8:00 a.m. Harborside DIE Stardust 10:30 a.m. Harborside DIE Binaries II: Observations 1:30 p.m. Harborside D Holmes: Studies in Scarlet and Infrared and Radio ... 1:30 p.m. Harborside E Spectroscopic Surveys 4:00 p.m. Harborside D TNOs and Centaurs: Thermal Models, Spectroscopy, and Surveys 4:00 p.m. Harborside E Scoping out the Rowdy Neighbors: NEO Surveys and Hazards Baseball game begins at 7:05p.m. Friday, July t8, 2008 8:00 a.m. Harborside DIE Small Body Geology 10:30 a.m. Harborside DIE Comet Tuttle 1:30 p.m. Harborside D Shape of Things 1:30p.m. Harborside E Interrelations II 3:30p.m. Harborside D Space Weathering and Taxonomies 3:30p.m. Harborside E Dynamics Monday, July 14, 2008 BINARIES I: CREATION AND DESTRUCTION 8:30 a.m. Harborside DIE Chairs: Keith Noll Dan Scheeres 8:30a.m. Marchis F.* Baek M. Berthier J. Descamps P. Emery J.P. Macomber B. Pollock J. Vachier F. Multiple Asteroid Systems: New Techniques to Study New World~ [#8321] 8:45a.m. Scheeres D. J. * Creation and Dissociation ofBinary Asteroids [#8059] 9:00 a.m. Walsh K. J. * Richardson D. C. Michel P. Rotational Breakup as the Origin ofSmall Binmy Asteroids [#8138] 9: 15 a.m. Holsapple K. A. * Spin Limits and Spin Fission of 100 km Asteroids, Are They also Determined by a Strength Measure? [#8173] 9:30a.m. CukM. * Nesvomy D. YORP-Erosion and Implications for Small-Body Populations [#8161] 9:45 a.m. Schlichting H. E. * Sari R. The Ratio ofRetrograde to Prograde Orbits: A Unique Way to Test Kuiper Belt Binary Formation Theories [#8219] 10:00 a.m. BREAK AsteroidY, Cornets, Meteors Conference 1 Monday, July 14, 2008 COMET SCHWASSMANN-WACHMANN 3: FRAGMENTARY INFORMATION 10:30 a.m. Harborside D/E Chairs: Michael Sitko Amy Lovell 10:30 a.m. Weaver H. A.* Lisse C. M. Mutchler M. Lamy P. L. Toth I. Reach W. T. Vaubaillon J. Hubble Investigation of the Band G Fragments of Comet 73P/Schwassmann-Wachmann 3 [#8248] 10:45 a.m. Sitko M. L. * Polomski E. F. Lisse C. M. Harker D. E. Lynch D. K. Russell R. W. Kelley M.S. Whitney B. A. Wo1ffM. J. Spitzer Spectroscopy of Comet 73P/Schwassmann-Wachmann 3 [#8101] 11:00 a.m. Vincent J.-B. * Bohnhardt H. Lara L. M. Bertini I. Coma Structures Analysis for Comet Schwassmann-Wachmann 3, Components Band C [#8022] 11:15 a.m. Vaubaillon J. J. * Reach W. T. The Structure of Comets Revealed by the Debris from Breakup of73PISW3 [#8041] 11:30 a.m. Wolk S. J. Lisse C. M. * Bodewits D. Christian D. J. Dennerl K. Chandra's Close Encounter with the Disintegrating Comets 73P/Schwassmann-Wachmann-3 Fragment B and C/1999 S4 (LINEAR) [#8305] 11:45 a.m. Harker D. E.* Sitko M. L. Woodward C. E. Wooden D. H. Russell R. W. Lynch D. K. Dust Properties of Comet 73P/Schwassmann-Wachmann 3 Fragments Band C [#8040] 12:00 p.m. LUNCH 2 Asteroids, Comets, Meteors Conference Monday, July 14,2008 METEORS I 1:30 p.m. Harborside DIE Chairs: Peter Jenniskens Douglas Re Yelle 1:30 p.m. Spumy P. * Borovicka J. Ceplecha Z. Shrbeny L. Precise Multi-Instrument Data on 45 Fireballs Recorded over Central Europe in the Period 2006-2008 [#8217] 1:45 p.m. Wiegert P. A.* Vaubaillon J. Campbell-Brown M.D. Theoretical Modeling of the Sporadic Meteor Complex [#8166] 2:00p.m. Jenniskens P. * The Parent Bodies ofour Meteor Showers [#8178] 2:15 p.m. McNamara H. * Cooke W. J. Suggs R. A Comparison of the Observed Lunar Impact A/Jymmetries with NASA's Meteoroid Engineering Model (MEA1) [#8017] 2:30p.m. Popelenskaya N. V. * The Determination of the Small Meteoric Bodies Sizes [#8267] 2:45p.m. Edwards W. N. * Brown P. G. Weryk R. J. Krzeminski Z. Wiegert P. Recent Probable Meteorite Falls Observed by the Southern Ontario Meteor Network [#8095] 3:00p.m. Stulov V. P. Barri N. G. * Gritsevich M. I. Destruction ofMeteoroids and Fall of Meteorites [#8027] 3:15p.m. Bagrov A. V. * Bolgova G. T. Kartashova A. P. Leonov V. A. Sorokin N. A. Theoretical Dimension of Meteor Radiation Region for Meteoroid Stream Produced by Comet Disaster [#8194] 3:30p.m. BREAK Asteroids, Comets, Meteors Conference 3 Monday, July 14, 2008 POSTER SESSION I 4:00p.m. Laurel and Kent Rooms HOLMES, TUTTLE, AND SW3 Moreno F. Ortiz J. L. Santos-Sanz P. Morales N. Vidal-Nunez M. J. Lara L. M. Gutierrez P. J. Early Evolution of the Outburst of Comet 17P /Holmes [#8034] Kiselev N. Rosenbush V. Velichko S. Velichko F. Kolokolova L. Antoniuk K. Unusual Polarization During Outburst ofCmnet 17P/Holmes [#8124] Watanabe J. Honda M. Ishiguro M. Ootsubo T. Sakon I. Ishihara D. Shimonishi T. Fujiyoshi T. Fuse T. Takato N. Kadono T. Furusho R. Subaru/COMICS Mid-In_frared Observation ofNear-Nucleus Region of Comet 17P/Holmes at the Early Phase of the Outburst [#8203] Meng H. Zhang M. Mei L. Zhang L. Zhai M. Zhu J. Shan H. Optical Observations of the Outburst of Comet 17P/Holmes in Its Early Phase [#8204] Churyumov K. I. Chubko L. S. Lukyanyk I. V. Kleshchonok V. V. Berezhnoy A. A. Chavushian V. H. Sandoval L. Palma A. Study of Spectra of Comet 17P/Holmes Obtained with 2.12-m Telescope in Mexico on November 2 and 3, 2007 [#8225] Delio Russo N. Vervack R. J. Jr. Weaver H. A. Montgomery M. M. Deshpande R. Fernandez Y. R. Martin E. L. A High-Resolution Irifrared Study of the Chemistry of Comet 17P/Holmes After Its Outburst [#8232] Drahus M. Paganini L. Ziurys L. M. Peters W. Jarchow C. Hartogh P. The Recent Mega-Outburst of Comet 17P/Holmes at Millimeter Wavelengths [#8340] Biver N. Lis D. C. Fray N. Bockelee-Morvan D. Crovisier J. Boissier J. Colom P. Dello-Russo N. Moreno R. Vervack R. J. Weaver H. A. Molecular Composition of Comet 8P/Tuttlefrom Radio Observations with the !RAM and CSO Telescopes [#8151] Bockelee-Morvan D. Delio Russo N. Jehin E. Manfroid J. Smette A. Cochran A. Hutsemekers D. Kawakita H. Kobayashi H. Schulz R. Weiler M. Zucconi J. M. Arpigny C. Biver N. Crovisier J. Magain P. Rauer H. Sana H. V ervack R. J. Weaver H. A Multi-Wavelength Simultaneous Study of the Composition of the Halley-Family Comet 8P/Tuttle at the VLT [#8190] Lovell A. J. Howell E. S. Radio OH Observations of 8P/Tuttle [#8379] Lippi M. Mumma M. J. Villanueva G. L. Di Santi M. A. Bonev B. Boehnhardt H. The Volatile Composition of the Periodic Comet 8P/Tuttle as Measured with CRIRES at ESO 's VLT Observatory [#8197] Lamy P. L. Toth I. Weaver H A. Noll K. S. Characterization of the Nucleus Fragment 73P /Schwassmann- Wachmann 3-C from Hubble Space Telescope Observation in 2001 and 2006 [#8160] 4 Asteroids, Comets, Meteors Conference Biver N.
Recommended publications
  • Autonomous Onboard Science Data Analysis for Comet Missions
    AUTONOMOUS ONBOARD SCIENCE DATA ANALYSIS FOR COMET MISSIONS David R. Thompson(1), Daniel Q. Tran(1), David McLaren(1), Steve A. Chien(1), Larry Bergman(1), Rebecca Castaño(1), Richard Doyle(1), Tara Estlin(1), Matthew Lenda(1), (1) Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. Pasadena, CA 91109, USA Email: [email protected], all others [email protected] Figure 1. Plume detection by identifying the nucleus. Left: computational edge detection. Center: a convex hull of edge points. Right: bright areas outside the nucleus are plumes. Image credit: NASA/JPL/UMD. ABSTRACT active geologic processes including scarps and outflows [1]. Its surface undergoes continuous modification, Coming years will bring several comet rendezvous with visible change during the years between two missions. The Rosetta spacecraft arrives at Comet flybys. The EPOXI flyby of comet Hartley 2 shows 67P/Churyumov–Gerasimenko in 2014. Subsequent skyscraper-size spires, flat featureless plains that outgas rendezvous might include a mission such as the H O, regions of rough and mottled texture, bands of proposed Comet Hopper with multiple surface landings, 2 various shapes, and diverse surface albedo. Comets’ as well as Comet Nucleus Sample Return (CNSR) and active areas range from 10-90%, changing over time Coma Rendezvous and Sample Return (CRSR). These and distance to the sun. They manifest as both localized encounters will begin to shed light on a population that, jets and diffuse regions (Figure 1). Still more exotic, despite several previous flybys, remains mysterious and recently discovered “active asteroids” suggest that poorly understood.
    [Show full text]
  • Discovery of an Extreme Mass-Ratio Satellite of (41) Daphne in a Close Orbit
    Asteroids, Comets, Meteors (2008) 8370.pdf DISCOVERY OF AN EXTREME MASS-RATIO SATELLITE OF (41) DAPHNE IN A CLOSE ORBIT. W. J. Merline1, A. R. Conrad2, J. D. Drummond3, B. Carry4, C. Dumas4, P. M. Tamblyn1, C. R. Chapman1, W. M. Owen5, D. D. Durda1, R. D. Campbell2, R. W. Goodrich2. 1Southwest Research Institute, 1050 Walnut Street, Ste 300, Boulder, CO 80302,2W.M. Keck Observatory, 65-1120 Mamalahoa Highway, Kamuela, HI, 96743, 3Starfire Optical Range, Directed Energy Directorate, Air Force Research Laboratory, Kirtland AFB, NM 87117,4ESO Very Large (VLT), European Southern Observatory, Alonso de Cordova 3107, Vitacura Casilla 19001, Santiago 19, Chile, 5Jet Propulsion Laboratory, 301-150, 4800 Oak Grove Dr, Pasadena, CA 91109 Introduction. We report the discovery of a small we have only been able to make preliminary estimates satellite to large C-type asteroid (41) Daphne, using of the system parameters. From the single arc of the adaptive optics on Keck II. The satellite appears to orbit, we had at first estimate a semi-major axis of have the most extreme mass ratio (106) of any binary about 443 km, but revised estimates put it at closer to known. It is also in a particularly close orbit for this 405 km. The orbital period estimate on our first report class of binary. We consider how difficult is such a was 1.6 days, but this may be revised downward. The detection for large asteroids in the Main Belt, and what most unsual aspect is that this object appears to have consequences it may have for the main-belt binary the most extreme size ratio of any known binary.
    [Show full text]
  • Asteroid Shape and Spin Statistics from Convex Models J
    Asteroid shape and spin statistics from convex models J. Torppa, V.-P. Hentunen, P. Pääkkönen, P. Kehusmaa, K. Muinonen To cite this version: J. Torppa, V.-P. Hentunen, P. Pääkkönen, P. Kehusmaa, K. Muinonen. Asteroid shape and spin statistics from convex models. Icarus, Elsevier, 2008, 198 (1), pp.91. 10.1016/j.icarus.2008.07.014. hal-00499092 HAL Id: hal-00499092 https://hal.archives-ouvertes.fr/hal-00499092 Submitted on 9 Jul 2010 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Accepted Manuscript Asteroid shape and spin statistics from convex models J. Torppa, V.-P. Hentunen, P. Pääkkönen, P. Kehusmaa, K. Muinonen PII: S0019-1035(08)00283-2 DOI: 10.1016/j.icarus.2008.07.014 Reference: YICAR 8734 To appear in: Icarus Received date: 18 September 2007 Revised date: 3 July 2008 Accepted date: 7 July 2008 Please cite this article as: J. Torppa, V.-P. Hentunen, P. Pääkkönen, P. Kehusmaa, K. Muinonen, Asteroid shape and spin statistics from convex models, Icarus (2008), doi: 10.1016/j.icarus.2008.07.014 This is a PDF file of an unedited manuscript that has been accepted for publication.
    [Show full text]
  • Agile Science Operations David R
    Agile Science Operations David R. Thompson Machine Learning and Instrument Autonomy Jet Propulsion Laboratory, California Institute of Technology Engineering Resilient Space Systems Keck Institute Study, July 31 2012. A portion of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Copyright 2012 California Institute of Technology. All Rights Reserved; U. S. Government Support Acknowledged. Image: Hartley 2 (EPOXI), NASA/JPL/UMD Jet Propulsion Laboratory / California Institute of Technology / Solar System Exploration Directorate 1 Agenda Motivation: science at primitive bodies Critical Path Analysis and reaction time A survey of onboard science data analysis Case study – how could onboard data analysis impact missions? Image: Hartley 2 (EPOXI), NASA/JPL/UMD Jet Propulsion Laboratory / California Institute of Technology / Solar System Exploration Directorate 2 Primitive bodies Jet Propulsion Laboratory / California Institute of Technology / Solar System Exploration Directorate 3 Typical encounter (Lutetia 21, Rosetta) Jet Propulsion Laboratory / California Institute of Technology / Solar System Exploration Directorate 4 Primitive bodies: key measurements Reproduced from Castillo-Rogez, Pavone, Nesnas, Hoffman, “Expected Science Return of Spatially-Extended In-Situ Exploration at Small Solar System Bodies,” IEEE Aerospace 2012. Jet Propulsion Laboratory / California Institute of Technology / Solar System Exploration Directorate
    [Show full text]
  • Projekt Brána Do Vesmíru
    Projekt Brána do vesmíru Hvězdárna Valašské Meziříčí, p. o. Krajská hvezdáreň v Žiline Súčasnosť a budúcnosť výskumu medziplanetárnej hmoty RNDr. Peter Vereš, PhD. University of Hawaii / Univerzita Komenského Ako sa objavila MPH ● Pôvodne iba nehybná hviezdna sféra ● Mesiac a Slnko ● Bludné planéty viditeľné voľným okom Starovek => novovek Piazzi ● 1.1.1801 ● Objekt pozorovaný 41 dní ● Stratený...predpoklad, medzi Marsom a Jupiterom ● Laplace – nemožné nájsť ● Gauss (24) vynašiel metódu, vypočítal, Ceres bol nájdený... Halley ● Kométy, odjakživa považované za poslov zlých správ, vysvetlené ako atmosferické javy ● ● ● ● Názov Kometes (dlhovlasá) ● 1577 Brahe = paralaxa, ďalej ako Mesiac ● Edmond Halley si všimol periodicitu kométy 1531, 1607, 1682 = návrat v 1758 Meteory ● Zaznamenané v -1809, - 687 (Lyridy) ● Ernst Chladni 1794 Kniha o pôvode Pallasovho železa ● 1798 Brandes, Benzenberg, paralaxa 400 meteorov, 22 spoločných ● 1803 dážď / Paríž, priznanie kozmického pôvodu ● 1833 USA dážď 20/s, LEO ● 1845/46 rozpad kométy Biela, dažde Andromedíd (72, 85, 93, 99) ● 1861 = Kirkwood, súvis rojov s kométami ● 1866 Schiaparelli: Swift-Tuttle (Perzeidy), Tempel (Leonidy) ● 1899 Adams vypočítal, že Jupiter narušil dráhu kométy, dážď nebol 1833, rytina, Leonidy 1998, foto, Leonidy, AGO Modra MPH a Slnečná sústava ● Slnko ● planéty (8) ● trpasličie planéty /Ceres, Pluto, Haumea, Makemake, Eris ● MPH = asteroidy, kométy, prach, plyn, .... Vznik a vývoj asteroidov ● -4571mil. rokov – vznik Sl. sús. ● Akrécia hmoty – nehomogenity, planetesimály, „viskózna
    [Show full text]
  • LAST CALL for the DAS Dinner Meeting Tuesday, May17th
    Vol. 56, No. 5, May, 2011 Next Meeting – May 17th, 2011 at 6:00 PM ~ Annual Dinner Meeting at the Hilton Wilmington/Christiana ~ See Pages 4 & 5 for full Details on this Event Celebrating the DAS Amateur Astronomer of the Year FROM THE PRESIDENT ! Bill Hanagan To start off, I’d like to thank Bill McKibben for his LAST CALL for the presentation at the April meeting on the Ancient Astronomy of Machu Picchu and Greg Lee for his presentation on DAS Dinner Meeting “What’s Up in the Sky”. If you missed the April meeting, you also missed my presentation on the sizing, positioning, and th surface quality of Newtonian secondary mirrors. Tuesday, May 17 Our May meeting is the annual “dinner” meeting of the DAS and it will be held on Tuesday, May 17 at the Christiana You’ll need to call Treasurer McKibben Hilton, the same location as last year. Social hour begins at at this late hour for Reservations. 6:00 P.M. followed by dinner at 7:00 P.M. After dinner, we’ll view a short video of time lapse astrophotos followed by the Andrew K. Johnston presentation of the Amateur Astronomer of the Year Award. We’ll conclude the evening with a talk titled “Navigating across from the the Solar System” by Mr. Andrew K. Johnston from the National Smithsonian Air and Space Museum. Mr. Johnston is the co-author of the “Smithsonian Atlas of Space Exploration” and his talk will give National Air & us a look at the history and technology of solar system explora- tion.
    [Show full text]
  • ISTS-2017-D-074ⅠISSFD-2017-074
    A look at the capture mechanisms of the “Temporarily Captured Asteroids” of the Earth By Hodei URRUTXUA1) and Claudio BOMBARDELLI2) 1)Astronautics Group, University of Southampton, United Kingdom 2)Space Dynamics Group, Technical University of Madrid, Spain (Received April 17th, 2017) Temporarily captured asteroids of the Earth are a newly discovered family of asteroids, which become naturally captured in the vicinity of the Earth for a limited time period. Thus, during the temporary capture these asteroids are in energetically favorable condi- tions, which makes them appealing targets for space missions to asteroids. Despite their potential interest, their capture mechanisms are not yet fully understood, and basic questions remain unanswered regarding the taxonomy of this population. The present work looks at gaining a better understanding of the key features that are relevant to the duration and nature of these asteroids, by analyzing patterns and extracting conclusions from a synthetic population of temporarily captured asteroids. Key Words: Asteroids, temporarily captured asteroids, capture dynamics, asteroid retrieval. Acronyms system. Asteroid 2006 RH120 is so far the only known mem- ber of this population, though statistical studies by Granvik et TCA : Temporarily captured asteroids al.12) support the evidence that such objects are actually com- TCO : Temporarily captured orbiters mon companions of the Earth, and thus it is expected that an TCF : Temporarily captured fly-bys increasing number of them will be found as survey technology improves.13) 1. Introduction During their temporary capture phase these asteroids are technically orbiting the Earth rather than the Sun, since their The origin of planetary satellites in the Solar System has Earth-binding energy is negative.
    [Show full text]
  • Ice& Stone 2020
    Ice & Stone 2020 WEEK 33: AUGUST 9-15 Presented by The Earthrise Institute # 33 Authored by Alan Hale About Ice And Stone 2020 It is my pleasure to welcome all educators, students, topics include: main-belt asteroids, near-Earth asteroids, and anybody else who might be interested, to Ice and “Great Comets,” spacecraft visits (both past and Stone 2020. This is an educational package I have put future), meteorites, and “small bodies” in popular together to cover the so-called “small bodies” of the literature and music. solar system, which in general means asteroids and comets, although this also includes the small moons of Throughout 2020 there will be various comets that are the various planets as well as meteors, meteorites, and visible in our skies and various asteroids passing by Earth interplanetary dust. Although these objects may be -- some of which are already known, some of which “small” compared to the planets of our solar system, will be discovered “in the act” -- and there will also be they are nevertheless of high interest and importance various asteroids of the main asteroid belt that are visible for several reasons, including: as well as “occultations” of stars by various asteroids visible from certain locations on Earth’s surface. Ice a) they are believed to be the “leftovers” from the and Stone 2020 will make note of these occasions and formation of the solar system, so studying them provides appearances as they take place. The “Comet Resource valuable insights into our origins, including Earth and of Center” at the Earthrise web site contains information life on Earth, including ourselves; about the brighter comets that are visible in the sky at any given time and, for those who are interested, I will b) we have learned that this process isn’t over yet, and also occasionally share information about the goings-on that there are still objects out there that can impact in my life as I observe these comets.
    [Show full text]
  • Color Study of Asteroid Families Within the MOVIS Catalog David Morate1,2, Javier Licandro1,2, Marcel Popescu1,2,3, and Julia De León1,2
    A&A 617, A72 (2018) Astronomy https://doi.org/10.1051/0004-6361/201832780 & © ESO 2018 Astrophysics Color study of asteroid families within the MOVIS catalog David Morate1,2, Javier Licandro1,2, Marcel Popescu1,2,3, and Julia de León1,2 1 Instituto de Astrofísica de Canarias (IAC), C/Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain e-mail: [email protected] 2 Departamento de Astrofísica, Universidad de La Laguna, 38205 La Laguna, Tenerife, Spain 3 Astronomical Institute of the Romanian Academy, 5 Cu¸titulde Argint, 040557 Bucharest, Romania Received 6 February 2018 / Accepted 13 March 2018 ABSTRACT The aim of this work is to study the compositional diversity of asteroid families based on their near-infrared colors, using the data within the MOVIS catalog. As of 2017, this catalog presents data for 53 436 asteroids observed in at least two near-infrared filters (Y, J, H, or Ks). Among these asteroids, we find information for 6299 belonging to collisional families with both Y J and J Ks colors defined. The work presented here complements the data from SDSS and NEOWISE, and allows a detailed description− of− the overall composition of asteroid families. We derived a near-infrared parameter, the ML∗, that allows us to distinguish between four generic compositions: two different primitive groups (P1 and P2), a rocky population, and basaltic asteroids. We conducted statistical tests comparing the families in the MOVIS catalog with the theoretical distributions derived from our ML∗ in order to classify them according to the above-mentioned groups. We also studied the background populations in order to check how similar they are to their associated families.
    [Show full text]
  • Volume 1, #1 2021 May 14 Published on Behalf of the International Astronomical Union by the WG Small Bodies Nomenclature
    Volume 1, #1 2021 May 14 Published on behalf of the International Astronomical Union by the WG Small Bodies Nomenclature. ISSN <applied for> Cover image: Navigation image of (1) Ceres, obtained by the DAWN mission. Courtesy NASA/JPL-CALTECH. WGSBN Bull. 1, #1 Table of Contents Editorial Notice.....................................................................................................................8 New Names of Minor Planets...............................................................................................8 (3708) Socus = 1974 FV1...............................................................................................9 (4035) Thestor = 1986 WD1...........................................................................................9 (4489) Dracius = 1988 AK..............................................................................................9 (4715) Medesicaste = 1989 TS1.....................................................................................9 (5258) Rhoeo = 1989 AU1..............................................................................................9 (5311) Rutherford = 1981 GD1.......................................................................................9 (5346) Benedetti = 1981 QE3.........................................................................................9 (5648) Axius = 1990 VU1...............................................................................................9 (5766) Carmelofalco = 1986 QR3..................................................................................9
    [Show full text]
  • The British Astronomical Association Handbook 2017
    THE HANDBOOK OF THE BRITISH ASTRONOMICAL ASSOCIATION 2017 2016 October ISSN 0068–130–X CONTENTS PREFACE . 2 HIGHLIGHTS FOR 2017 . 3 CALENDAR 2017 . 4 SKY DIARY . .. 5-6 SUN . 7-9 ECLIPSES . 10-15 APPEARANCE OF PLANETS . 16 VISIBILITY OF PLANETS . 17 RISING AND SETTING OF THE PLANETS IN LATITUDES 52°N AND 35°S . 18-19 PLANETS – EXPLANATION OF TABLES . 20 ELEMENTS OF PLANETARY ORBITS . 21 MERCURY . 22-23 VENUS . 24 EARTH . 25 MOON . 25 LUNAR LIBRATION . 26 MOONRISE AND MOONSET . 27-31 SUN’S SELENOGRAPHIC COLONGITUDE . 32 LUNAR OCCULTATIONS . 33-39 GRAZING LUNAR OCCULTATIONS . 40-41 MARS . 42-43 ASTEROIDS . 44 ASTEROID EPHEMERIDES . 45-50 ASTEROID OCCULTATIONS .. ... 51-53 ASTEROIDS: FAVOURABLE OBSERVING OPPORTUNITIES . 54-56 NEO CLOSE APPROACHES TO EARTH . 57 JUPITER . .. 58-62 SATELLITES OF JUPITER . .. 62-66 JUPITER ECLIPSES, OCCULTATIONS AND TRANSITS . 67-76 SATURN . 77-80 SATELLITES OF SATURN . 81-84 URANUS . 85 NEPTUNE . 86 TRANS–NEPTUNIAN & SCATTERED-DISK OBJECTS . 87 DWARF PLANETS . 88-91 COMETS . 92-96 METEOR DIARY . 97-99 VARIABLE STARS (RZ Cassiopeiae; Algol; λ Tauri) . 100-101 MIRA STARS . 102 VARIABLE STAR OF THE YEAR (T Cassiopeiæ) . .. 103-105 EPHEMERIDES OF VISUAL BINARY STARS . 106-107 BRIGHT STARS . 108 ACTIVE GALAXIES . 109 TIME . 110-111 ASTRONOMICAL AND PHYSICAL CONSTANTS . 112-113 INTERNET RESOURCES . 114-115 GREEK ALPHABET . 115 ACKNOWLEDGEMENTS / ERRATA . 116 Front Cover: Northern Lights - taken from Mount Storsteinen, near Tromsø, on 2007 February 14. A great effort taking a 13 second exposure in a wind chill of -21C (Pete Lawrence) British Astronomical Association HANDBOOK FOR 2017 NINETY–SIXTH YEAR OF PUBLICATION BURLINGTON HOUSE, PICCADILLY, LONDON, W1J 0DU Telephone 020 7734 4145 PREFACE Welcome to the 96th Handbook of the British Astronomical Association.
    [Show full text]
  • PYTS/ASTR 206 – Comets 1
    PYTS/ASTR 206 – Comets 1 Announcements HW6 available today, due in a week Use Kevin as the TA for this one 2 In-class assignments left in 3 lectures PYTS/ASTR 206 – Comets 2 Comets PTYS/ASTR 206 – The Golden Age of Planetary Exploration Shane Byrne – [email protected] PYTS/ASTR 206 – Comets 3 In this lecture… Observations of comets What are comets? Composition and structure Cometary tails Ion and dust tails Where do comets come from? Orbits of comets Oort cloud Scattered Kuiper Belt PYTS/ASTR 206 – Comets 4 Observations of comets Comets have been known from ancient times Thought to foreshadow disasters and major battles Pre-telescopes the known solar system was a pretty empty place Moon and the Sun Mercury, Venus, Mars, Jupiter, Saturn And COMETS No Uranus No Neptune No planetary Moons (except ours) No Asteroids No Kuiper Belt Objects PYTS/ASTR 206 – Comets 5 People have recorded comet sightings for millennia 167 BC 687 AD 1986 AD PYTS/ASTR 206 – Comets 6 Ancient Greeks thought comets were atmospheric phenomena In the west this went unchallenged until telescopes came along Tycho Brahe’s parallax measurements proved this wrong Comets were much further away than the Moon Renaissance astronomers thought comets moved in straight lines through the solar system Even Kepler argued they shouldn’t follow elliptical orbits like the planets In the 1680s astronomers tracked a comet and showed it had an elliptical orbit Comets were solar system objects – just like planets PYTS/ASTR 206 – Comets 7 Newton finally
    [Show full text]