Asteroid Lightcurves
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Perturbations in the Motion of the Quasicomplanar Minor Planets For
Publications of the Department of Astronom} - Beograd, N2 ID, 1980 UDC 523.24; 521.1/3 osp PERTURBATIONS IN THE MOTION OF THE QUASICOMPLANAR MI NOR PLANETS FOR THE CASE PROXIMITIES ARE UNDER 10000 KM J. Lazovic and M. Kuzmanoski Institute of Astronomy, Faculty of Sciences, Beograd Received January 30, 1980 Summary. Mutual gravitational action during proximities of 12 quasicomplanar minor pla nets pairs have been investigated, whose minimum distances were under 10000 km. In five of the pairs perturbations of several orbital elements have been stated, whose amounts are detectable by observations from the Earth. J. Lazovic, M. Kuzmanoski, POREMECAJI ELEMENATA KRETANJA KVAZIKOM PLANARNIH MALIH PLANETA U PROKSIMITETIMA NJIHOVIH PUTANJA SA DA LJINAMA MANJIM OD 10000 KM - Ispitali smo medusobna gravitaciona de;stva pri proksi mitetima 12 parova kvazikomplanarnih malih planeta sa minimalnim daljinama ispod 10000 km. Kod pet parova nadeni su poremecaji u vi~e putanjskih elemenata, ~iji bi se iznosi mogli ustano viti posmatranjima sa Zemlje. Earlier we have found out 13 quasicomplanar minor planets pairs (the angle I between their orbital planes less than O~500), whose minimum mutual distances (pmin) were less than 10000 km (Lazovic, Kuzmanoski, 1978). The shortest pro ximity distance of only 600 km among these pairs has been stated with minor planet pair (215) Oenone and 1851 == 1950 VA. The corresponding perturbation effects in this pair have been calculated (Lazovic, Kuzmanoski, 1979a). This motivated us to investigate the mutual perturbing actions in the 12 remaining minor planets pairs for the case they found themselves within the proximities of their correspon ding orbits. -
Phase Integral of Asteroids Vasilij G
A&A 626, A87 (2019) Astronomy https://doi.org/10.1051/0004-6361/201935588 & © ESO 2019 Astrophysics Phase integral of asteroids Vasilij G. Shevchenko1,2, Irina N. Belskaya2, Olga I. Mikhalchenko1,2, Karri Muinonen3,4, Antti Penttilä3, Maria Gritsevich3,5, Yuriy G. Shkuratov2, Ivan G. Slyusarev1,2, and Gorden Videen6 1 Department of Astronomy and Space Informatics, V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine e-mail: [email protected] 2 Institute of Astronomy, V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine 3 Department of Physics, University of Helsinki, Gustaf Hällströmin katu 2, 00560 Helsinki, Finland 4 Finnish Geospatial Research Institute FGI, Geodeetinrinne 2, 02430 Masala, Finland 5 Institute of Physics and Technology, Ural Federal University, Mira str. 19, 620002 Ekaterinburg, Russia 6 Space Science Institute, 4750 Walnut St. Suite 205, Boulder CO 80301, USA Received 31 March 2019 / Accepted 20 May 2019 ABSTRACT The values of the phase integral q were determined for asteroids using a numerical integration of the brightness phase functions over a wide phase-angle range and the relations between q and the G parameter of the HG function and q and the G1, G2 parameters of the HG1G2 function. The phase-integral values for asteroids of different geometric albedo range from 0.34 to 0.54 with an average value of 0.44. These values can be used for the determination of the Bond albedo of asteroids. Estimates for the phase-integral values using the G1 and G2 parameters are in very good agreement with the available observational data. -
RASNZ Occultation Section Circular CN2009/1 April 2013 NOTICES
ISSN 11765038 (Print) RASNZ ISSN 23241853 (Online) OCCULTATION CIRCULAR CN2009/1 April 2013 SECTION Lunar limb Profile produced by Dave Herald's Occult program showing 63 events for the lunar graze of a bright, multiple star ZC2349 (aka Al Niyat, sigma Scorpi) on 31 July 2009 by two teams of observers from Wellington and Christchurch. The lunar profile is drawn using data from the Kaguya lunar surveyor, which became available after this event. The path the star followed across the lunar landscape is shown for one set of observers (Murray Forbes and Frank Andrews) by the trail of white circles. There are several instances where a stepped event was seen, due to the two brightest components disappearing or reappearing. See page 61 for more details. Visit the Occultation Section website at http://www.occultations.org.nz/ Newsletter of the Occultation Section of the Royal Astronomical Society of New Zealand Table of Contents From the Director.............................................................................................................................. 2 Notices................................................................................................................................................. 3 Seventh TransTasman Symposium on Occultations............................................................3 Important Notice re Report File Naming...............................................................................4 Observing Occultations using Video: A Beginner's Guide.................................................. -
Asteroid Observations at Low Phase Angles. IV. Average Parameters for the New H, G1, G2 Magnitude System Vasilij G
Planetary and Space Science ∎ (∎∎∎∎) ∎∎∎–∎∎∎ Contents lists available at ScienceDirect Planetary and Space Science journal homepage: www.elsevier.com/locate/pss Asteroid observations at low phase angles. IV. Average parameters for the new H, G1, G2 magnitude system Vasilij G. Shevchenko a,b,n, Irina N. Belskaya a, Karri Muinonen c,d, Antti Penttilä c, Yurij N. Krugly a, Feodor P. Velichko a, Vasilij G. Chiorny a, Ivan G. Slyusarev a,b, Ninel M. Gaftonyuk e, Igor A. Tereschenko a a Institute of Astronomy of Kharkiv Karazin National University, Sumska str. 35, Kharkiv 61022, Ukraine b Department of Astronomy and Space Informatics of Kharkiv Karazin National University, Svobody sqr. 4, Kharkiv 61022, Ukraine c Department of Physics, University of Helsinki, P.O. Box 64, FI-00014, Finland d Finnish Geospatial Research Institute, P.O. Box 15, Masala, FI-02431, Finland e Crimean Astrophysical Observatory, Crimea, Simeiz 98680, Ukraine article info abstract Article history: We present new observational data for selected main-belt asteroids of different compositional types. The Received 21 January 2015 detailed magnitude–phase dependences including small phase angles (o1°) were obtained for these Received in revised form asteroids, namely: (10) Hygiea (down to the phase angle of 0.3°, C-type), (176) Iduna (0.2°, G-type), (214) 6 September 2015 Aschera (0.2°, E-type), (218) Bianca (0.3°, S-type), (250) Bettina (0.3°, M-type), (419) Aurelia (0.1°, F-type), Accepted 19 November 2015 (596) Scheila (0.2°, D-type), (635) Vundtia (0.2°, B-type), (671) Carnegia (0.2°, P-type), (717) Wisibada (0.1°, T-type), (1021) Flammario (0.6°, B-type), and (1279) Uganda (0.5°, E-type). -
Do Slivan States Exist in the Flora Family? A
Do Slivan states exist in the Flora family? A. Kryszczyńska, F. Colas, M. Polińska, R. Hirsch, V. Ivanova, G. Apostolovska, B. Bilkina, F. Velichko, T. Kwiatkowski, P. Kankiewicz, et al. To cite this version: A. Kryszczyńska, F. Colas, M. Polińska, R. Hirsch, V. Ivanova, et al.. Do Slivan states exist in the Flora family?. Astronomy and Astrophysics - A&A, EDP Sciences, 2012, 546, pp.A72. 10.1051/0004- 6361/201219199. hal-03123875 HAL Id: hal-03123875 https://hal.archives-ouvertes.fr/hal-03123875 Submitted on 28 Jan 2021 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. A&A 546, A72 (2012) Astronomy DOI: 10.1051/0004-6361/201219199 & c ESO 2012 Astrophysics Do Slivan states exist in the Flora family? I. Photometric survey of the Flora region A. Kryszczynska´ 1,F.Colas2,M.Polinska´ 1,R.Hirsch1, V. Ivanova3, G. Apostolovska4, B. Bilkina3, F. P. Velichko5, T. Kwiatkowski1,P.Kankiewicz6,F.Vachier2, V. Umlenski3, T. Michałowski1, A. Marciniak1,A.Maury7, K. Kaminski´ 1, M. Fagas1, W. Dimitrov1, W. Borczyk1, K. Sobkowiak1, J. Lecacheux8,R.Behrend9, A. Klotz10,11, L. Bernasconi12,R.Crippa13, F. Manzini13, R. -
The V-Band Photometry of Asteroids from ASAS-SN
Astronomy & Astrophysics manuscript no. 40759˙ArXiV © ESO 2021 July 22, 2021 V-band photometry of asteroids from ASAS-SN Finding asteroids with slow spin ? J. Hanusˇ1, O. Pejcha2, B. J. Shappee3, C. S. Kochanek4;5, K. Z. Stanek4;5, and T. W.-S. Holoien6;?? 1 Institute of Astronomy, Faculty of Mathematics and Physics, Charles University, V Holesoviˇ ckˇ ach´ 2, 18000 Prague, Czech Republic 2 Institute of Theoretical Physics, Faculty of Mathematics and Physics, Charles University, V Holesoviˇ ckˇ ach´ 2, 18000 Prague, Czech Republic 3 Institute for Astronomy, University of Hawai’i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA 4 Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA 5 Center for Cosmology and Astroparticle Physics, The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA 6 The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA Received x-x-2021 / Accepted x-x-2021 ABSTRACT We present V-band photometry of the 20,000 brightest asteroids using data from the All-Sky Automated Survey for Supernovae (ASAS-SN) between 2012 and 2018. We were able to apply the convex inversion method to more than 5,000 asteroids with more than 60 good measurements in order to derive their sidereal rotation periods, spin axis orientations, and shape models. We derive unique spin state and shape solutions for 760 asteroids, including 163 new determinations. This corresponds to a success rate of about 15%, which is significantly higher than the success rate previously achieved using photometry from surveys. -
The Minor Planet Bulletin 36, 188-190
THE MINOR PLANET BULLETIN OF THE MINOR PLANETS SECTION OF THE BULLETIN ASSOCIATION OF LUNAR AND PLANETARY OBSERVERS VOLUME 37, NUMBER 3, A.D. 2010 JULY-SEPTEMBER 81. ROTATION PERIOD AND H-G PARAMETERS telescope (SCT) working at f/4 and an SBIG ST-8E CCD. Baker DETERMINATION FOR 1700 ZVEZDARA: A independently initiated observations on 2009 September 18 at COLLABORATIVE PHOTOMETRY PROJECT Indian Hill Observatory using a 0.3-m SCT reduced to f/6.2 coupled with an SBIG ST-402ME CCD and Johnson V filter. Ronald E. Baker Benishek from the Belgrade Astronomical Observatory joined the Indian Hill Observatory (H75) collaboration on 2009 September 24 employing a 0.4-m SCT PO Box 11, Chagrin Falls, OH 44022 USA operating at f/10 with an unguided SBIG ST-10 XME CCD. [email protected] Pilcher at Organ Mesa Observatory carried out observations on 2009 September 30 over more than seven hours using a 0.35-m Vladimir Benishek f/10 SCT and an unguided SBIG STL-1001E CCD. As a result of Belgrade Astronomical Observatory the collaborative effort, a total of 17 time series sessions was Volgina 7, 11060 Belgrade 38 SERBIA obtained from 2009 August 20 until October 19. All observations were unfiltered with the exception of those recorded on September Frederick Pilcher 18. MPO Canopus software (BDW Publishing, 2009a) employing 4438 Organ Mesa Loop differential aperture photometry, was used by all authors for Las Cruces, NM 88011 USA photometric data reduction. The period analysis was performed using the same program. David Higgins Hunter Hill Observatory The data were merged by adjusting instrumental magnitudes and 7 Mawalan Street, Ngunnawal ACT 2913 overlapping characteristic features of the individual lightcurves. -
Asteroids' Physical Models from Combined Dense and Sparse
Astronomy & Astrophysics manuscript no. hanus_2013_AA c ESO 2013 January 30, 2013 Asteroids' physical models from combined dense and sparse photometry and scaling of the YORP effect by the observed obliquity distribution 1 1 1 2 3 4 5 6 7 J. Hanuš ∗, J. Durechˇ , M. Brož , A. Marciniak , B. D. Warner , F. Pilcher , R. Stephens , R. Behrend , B. Carry , D. Capekˇ 8, P. Antonini9, M. Audejean10, K. Augustesen11, E. Barbotin12, P. Baudouin13, A. Bayol11, L. Bernasconi14, W. Borczyk2, J.-G. Bosch15, E. Brochard16, L. Brunetto17, S. Casulli18, A. Cazenave12, S. Charbonnel12, B. Christophe19, F. Colas20, J. Coloma21, M. Conjat22, W. Cooney23, H. Correira24, V. Cotrez25, A. Coupier11, R. Crippa26, M. Cristofanelli17, Ch. Dalmas11, C. Danavaro11, C. Demeautis27, T. Droege28, R. Durkee29, N. Esseiva30, M. Esteban11, M. Fagas2, G. Farroni31, M. Fauvaud12,32, S. Fauvaud12,32, F. Del Freo11, L. Garcia11, S. Geier33,34, C. Godon11, K. Grangeon11, H. Hamanowa35, H. Hamanowa35, N. Heck20, S. Hellmich36, D. Higgins37, R. Hirsch2, M. Husarik38, T. Itkonen39, O. Jade11, K. Kaminski´ 2, P. Kankiewicz40, A. Klotz41,42,R. A.Koff43, A. Kryszczynska´ 2, T. Kwiatkowski2, A. Laffont11, A. Leroy12, J. Lecacheux44, Y. Leonie11, C. Leyrat44, F. Manzini45, A. Martin11, G. Masi11, D. Matter11, J. Michałowski46, M. J. Michałowski47, T. Michałowski2, J. Michelet48, R. Michelsen11, E. Morelle49, S. Mottola36, R. Naves50, J. Nomen51, J. Oey52, W. Ogłoza53, A. Oksanen49, D. Oszkiewicz34,54, P. Pääkkönen39, M. Paiella11, H. Pallares11, J. Paulo11, M. Pavic11, B. Payet11, M. Polinska´ 2, D. Polishook55, R. Poncy56, Y. Revaz57, C. Rinner31, M. Rocca11, A. Roche11, D. Romeuf11, R. Roy58, H. Saguin11, P. -
The Journal of the Association of Lunar and Planetary Observers C::Lte Strolling Astronomer
The Journal Of The Association Of Lunar And Planetary Observers C::lte Strolling Astronomer 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 Volume 29, Numbers 3-4 Published December, 1981 Another suggestive Earth-based, pre-Voyager view ofthe curious dusky bands in the rings of Saturn? Drawing by Toshihiko Osawa in Japan on December 26, 1972 at 13 hrs., 45 mins., Universal Time. 8-inch reflector, 286X. Seeing 4 to 7, rather poor to fairly good. Transparency 4.5 (clear). Simply inverted view with south at the top. B (tilt to Earth) = -26.4 degrees. B' (tilt to Sun) = -26.6 degrees. Opposition on December 9, 1972. See text on pages 87 and 88. !1111111111111111111111111111111111111111111111=- THE STROLLING ASTRONOMER - Box 3AZ - University Park, New Mexico - 88003 - Res1dence telephone 522·4213 (Area Code 505) - in Las Cruces, New Mexico - Founded In 1947 INTIDSISSUE mE APPARITION OF COMET BRADFIELD 1979 X, by Stephen J. O'Meara and Daniel W. E. Green ......................... pg. 45 WHAT IS NEW ON MARS-MARTIAN 1979-1980 APPARITION REPORT ll (Concluded), by C. F. Capen and D. C. Parker ...................................... pg. 51 mE 1981 A.L.P.O. BUSINESS MEETING, by Phillip W. Budine and Julius L. Benton, Jr. ......................... pg. 60 AMATEURS AMONG THE ASTEROIDS, by J. U. Gunter ......................................•.............. pg. 61 mE MINOR PLANETS: AS INTERESTING AS EVER, by Alain Porter ..................................................... pg. 64 COMET WEST 1976 VI: OBSERVATIONS OF THE GREAT COMET OF 1976, by Derek W allentinsen .............................................. pg. 69 BOOK REVIEWS ........................•.......................... pg. 79 NEW BOOKS RECEIVED, by J. Russell Smith and Charles S. Morris .............................• pg. 83 THE A.L.P.O. AT ASTROCON '81, by Don Parker and Jeff Beish ........................................ -
Cumulative Index to Volumes 1-45
The Minor Planet Bulletin Cumulative Index 1 Table of Contents Tedesco, E. F. “Determination of the Index to Volume 1 (1974) Absolute Magnitude and Phase Index to Volume 1 (1974) ..................... 1 Coefficient of Minor Planet 887 Alinda” Index to Volume 2 (1975) ..................... 1 Chapman, C. R. “The Impossibility of 25-27. Index to Volume 3 (1976) ..................... 1 Observing Asteroid Surfaces” 17. Index to Volume 4 (1977) ..................... 2 Tedesco, E. F. “On the Brightnesses of Index to Volume 5 (1978) ..................... 2 Dunham, D. W. (Letter regarding 1 Ceres Asteroids” 3-9. Index to Volume 6 (1979) ..................... 3 occultation) 35. Index to Volume 7 (1980) ..................... 3 Wallentine, D. and Porter, A. Index to Volume 8 (1981) ..................... 3 Hodgson, R. G. “Useful Work on Minor “Opportunities for Visual Photometry of Index to Volume 9 (1982) ..................... 4 Planets” 1-4. Selected Minor Planets, April - June Index to Volume 10 (1983) ................... 4 1975” 31-33. Index to Volume 11 (1984) ................... 4 Hodgson, R. G. “Implications of Recent Index to Volume 12 (1985) ................... 4 Diameter and Mass Determinations of Welch, D., Binzel, R., and Patterson, J. Comprehensive Index to Volumes 1-12 5 Ceres” 24-28. “The Rotation Period of 18 Melpomene” Index to Volume 13 (1986) ................... 5 20-21. Hodgson, R. G. “Minor Planet Work for Index to Volume 14 (1987) ................... 5 Smaller Observatories” 30-35. Index to Volume 15 (1988) ................... 6 Index to Volume 3 (1976) Index to Volume 16 (1989) ................... 6 Hodgson, R. G. “Observations of 887 Index to Volume 17 (1990) ................... 6 Alinda” 36-37. Chapman, C. R. “Close Approach Index to Volume 18 (1991) .................. -
Instructions and Helpful Info
Target NEOs! Instructions and Helpful Info. (Modified and updated from the OSIRIS-REx Target Asteroids! website at https://www.asteroidmission.org) May 2021 Prerequisites for participation. • An interest in astronomy. • An interest in observing and providing data to the scientific community. • An interest in learning more about asteroids and near-Earth objects. • Appropriate observing equipment or access to equipment. • Membership in the Astronomical League through a member club or as an individual Member- at-Large. Request a registration form from the coordinators. • Complete the Target NEOs! registration form. • Periodically you will receive updated information about the program. Obtain instrumentation. The minimum instrumentation recommended to participate in this project is: • Telescope 8” or larger; • CCD/CMOS Camera, computer with internet connection; and • Data reduction software (available via Target NEOs!) If you have an appropriate telescope and camera, you will be able to observe asteroids on the Target NEOs! list. The asteroids that can be observed depend on the telescope’s aperture (diameter of the mirror or lens), light pollution, geographic location, and asteroid’s location in the sky on a given night. If you do not have a telescope, you can still participate in the program by obtaining access to observing equipment: • Team up and use a telescope owned by a friend, astronomy club, local college or planetarium observatory. • Use a commercial telescope service. • Are you a member of a local astronomy club? If not, we recommend it! Local astronomy clubs provide connections and opportunities for observations. You will meet friendly members who will be happy to help you. Check out the Astronomical League and NASA Night Sky Network to locate a club near you. -
The Minor Planet Bulletin (Warner Et 2010 JL33
THE MINOR PLANET BULLETIN OF THE MINOR PLANETS SECTION OF THE BULLETIN ASSOCIATION OF LUNAR AND PLANETARY OBSERVERS VOLUME 38, NUMBER 3, A.D. 2011 JULY-SEPTEMBER 127. ROTATION PERIOD DETERMINATION FOR 280 PHILIA – the lightcurve more readable these have been reduced to 1828 A TRIUMPH OF GLOBAL COLLABORATION points with binning in sets of 5 with time interval no greater than 10 minutes. Frederick Pilcher 4438 Organ Mesa Loop MPO Canopus software was used for lightcurve analysis and Las Cruces, NM 88011 USA expedited the sharing of data among the collaborators, who [email protected] independently obtained several slightly different rotation periods. A synodic period of 70.26 hours, amplitude 0.15 ± 0.02 Vladimir Benishek magnitudes, represents all of these fairly well, but we suggest a Belgrade Astronomical Observatory realistic error is ± 0.03 hours rather than the formal error of ± 0.01 Volgina 7, 11060 Belgrade 38, SERBIA hours. Andrea Ferrero The double period 140.55 hours was also examined. With about Bigmuskie Observatory (B88) 95% phase coverage the two halves of the lightcurve looked the via Italo Aresca 12, 14047 Mombercelli, Asti, ITALY same as each other and as in the 70.26 hour lightcurve. Furthermore for order through 14 the coefficients of the odd Hiromi Hamanowa, Hiroko Hamanowa harmonics were systematically much smaller than for the even Hamanowa Astronomical Observatory harmonics. A 140.55 hour period can be safely rejected. 4-34 Hikarigaoka Nukazawa Motomiya Fukushima JAPAN Observers and equipment: Observer code: VB = Vladimir Robert D. Stephens Benishek; AF = Andrea Ferrero; HH = Hiromi and Hiroko Goat Mountain Astronomical Research Station (GMARS) Hamanowa; FP = Frederick Pilcher; RS = Robert Stephens.