Annual Report Physics 2019-2020 NC Edited
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Arxiv:2001.00125V1 [Astro-Ph.EP] 1 Jan 2020
Draft version January 3, 2020 Typeset using LATEX default style in AASTeX61 SIZE AND SHAPE CONSTRAINTS OF (486958) ARROKOTH FROM STELLAR OCCULTATIONS Marc W. Buie,1 Simon B. Porter,1 et al. 1Southwest Research Institute 1050 Walnut St., Suite 300, Boulder, CO 80302 USA To be submitted to Astronomical Journal, Version 1.1, 2019/12/30 ABSTRACT We present the results from four stellar occultations by (486958) Arrokoth, the flyby target of the New Horizons extended mission. Three of the four efforts led to positive detections of the body, and all constrained the presence of rings and other debris, finding none. Twenty-five mobile stations were deployed for 2017 June 3 and augmented by fixed telescopes. There were no positive detections from this effort. The event on 2017 July 10 was observed by SOFIA with one very short chord. Twenty-four deployed stations on 2017 July 17 resulted in five chords that clearly showed a complicated shape consistent with a contact binary with rough dimensions of 20 by 30 km for the overall outline. A visible albedo of 10% was derived from these data. Twenty-two systems were deployed for the fourth event on 2018 Aug 4 and resulted in two chords. The combination of the occultation data and the flyby results provides a significant refinement of the rotation period, now estimated to be 15.9380 ± 0.0005 hours. The occultation data also provided high-precision astrometric constraints on the position of the object that were crucial for supporting the navigation for the New Horizons flyby. This work demonstrates an effective method for obtaining detailed size and shape information and probing for rings and dust on distant Kuiper Belt objects as well as being an important source of positional data that can aid in spacecraft navigation that is particularly useful for small and distant bodies. -
Precise Astrometry and Diameters of Asteroids from Occultations – a Data-Set of Observations and Their Interpretation
MNRAS 000,1–22 (2020) Preprint 14 October 2020 Compiled using MNRAS LATEX style file v3.0 Precise astrometry and diameters of asteroids from occultations – a data-set of observations and their interpretation David Herald 1¢, David Gault2, Robert Anderson3, David Dunham4, Eric Frappa5, Tsutomu Hayamizu6, Steve Kerr7, Kazuhisa Miyashita8, John Moore9, Hristo Pavlov10, Steve Preston11, John Talbot12, Brad Timerson (deceased)13 1Trans Tasman Occultation Alliance, [email protected] 2Trans Tasman Occultation Alliance, [email protected] 3International Occultation Timing Association, [email protected] 4International Occultation Timing Association, [email protected] 5Euraster, [email protected] 6Japanese Occultation Information Network, [email protected] 7Trans Tasman Occultation Alliance, [email protected] 8Japanese Occultation Information Network, [email protected] 9International Occultation Timing Association, [email protected] 10International Occultation Timing Association – European Section, [email protected] 11International Occultation Timing Association, [email protected] 12Trans Tasman Occultation Alliance, [email protected] 13International Occultation Timing Association, deceased Accepted XXX. Received YYY; in original form ZZZ ABSTRACT Occultations of stars by asteroids have been observed since 1961, increasing from a very small number to now over 500 annually. We have created and regularly maintain a growing data-set of more than 5,000 observed asteroidal occultations. The data-set includes: the raw observations; astrometry at the 1 mas level based on centre of mass or figure (not illumination); where possible the asteroid’s diameter to 5 km or better, and fits to shape models; the separation and diameters of asteroidal satellites; and double star discoveries with typical separations being in the tens of mas or less. -
Planetary Defense Coordination Office
Planetary Defense Coordination Office Lindley Johnson NASA’s Planetary Defense Officer Planetary Defense Coordination Office Planetary Science Division NASA Headquarters Washington, DC Update to SMPAG February 6, 2020 n a s a . g o v / planetarydefense 2 Current Planetary Defense Flight Mission Projects NEOWISE • Continues in extended NEO survey operations • Expected to exceed maximum useful temperatures in ~Summer 2020 DART: Double Asteroid Redirection Test • Demonstration of kinetic impactor technique • Target - Moon of 65803 Didymos • Launch NET July 2021, impact September 2022 • Completed Mission-level PDR April 2018 • KDP-C “Confirmation” signed August 2018 • CDR completed June 2019, DPMC completed August 2019 • Phase C complete by 1 April 2020 3 Signatories to the International Asteroid Warning Network (IAWN) iawn.net European Southern China National Northolt Branch Zwicky Višnjan Observatory Observatory Space Administration Observatories (UK) Transient (Croatia) Facility (US) National Institute of Astrophysics, Optics & Electronics (México) Korean Astronomy Space Science Institute (KASI) University of Nariño Inst. of Solar- Sormano Astronomical Colombia Terrestrial Physics Observatory (Italy) (Siberian Branch, Russian Academy of Sciences) Crimean European Institute of Astronomy, Astrophysical Observatory National Aeronautics and SONEAR Observatory Russian Academy of Space (Brazil) (Russian Academy of Sciences) Space Administration Sciences (ИНАСАН) Agency Special Follow-up Observers Astrophysical Peter Birtwhistle (UK) Observatory (Russian David Balam (Canada) 5 Academy of Patrick Wiggins (USA) Sciences) Kourovka Astronomical Observatory (UrFU ) Currently 20 signatories n a s a . g o v / planetarydefense NASA’s search started in 1998 *Potentially Hazardous Asteroids come within 7.5 million km of Earth orbit n a s a . g o v / planetarydefense All Near-Earth Asteroids (NEAs) n a s a . -
October 2019 Newsletter for the Wiltshire, Swindon, Beckington Committee Changes Astronomical Societies
Volume25, Issue 2 NWASNEWS October 2019 Newsletter for the Wiltshire, Swindon, Beckington Committee Changes Astronomical Societies A couple of changes to the committee The other position to be filled at the Wiltshire Society Page 2 positions from the AGM to report. To- AGM was the position of chairman. I ny Vale has stepped back from the have stepped back into the post for a Swindon Stargazers 3 year while some members think Beckington AS 4 observing coordinator alongside Jona- than Gale and Chris Brooks has volun- about options running forward but NASA Space Place 5 teered to step in, and is working on the thank you for year in office Keith. How to power a space probe viewing night list for the year, although The good news is that I have had 2 Space News 6-15 a family bereavement means he will members ask to be considered for 3.5 Billion yo fossil confirmed be supplying a more complete list in next year. Purple Twilight causes the next few days. He will also post On the Wiltshire Society page is a for Mush Starship Announcements these on the Facebook members page Fertile Mice from ISS sale item, an NEQ6 skywatcher Triple Massive Black hole System and the website via Sam. mount and battery. This is barely Summer Asteroid Near Miss Peter has completed the speaker list used, but Philip Proven is stepping Io’s 500 day Cycle at Loki Volca- for the year, see page 2, February is away from viewing and has this for noe Metalic Asteroid May have had waiting confirmation. -
Planetary Defense Coordination Office
Planetary Defense Coordination Office Lindley Johnson NASA’s Planetary Defense Officer Planetary Defense Coordination Office Planetary Science Division NASA Headquarters Washington, DC Update to AAAC January 23, 2020 n a s a . g o v / planetarydefense Planetary Defense Coordination Office The Planetary Defense Coordination Office (PDCO) was established in January 2016 at NASA HQ to manage planetary defense related activities across NASA, and coordinate with both U.S. interagency and international efforts to study and plan response to the asteroid impact hazard. Mission Statement Lead national and international efforts to: • Detect any potential for significant impact of planet Earth by natural objects • Appraise the range of potential effects by any possible impact • Develop strategies to mitigate impact effects on human welfare N e a r - Earth Object Observations Program – Interagency and International Partnerships – Mitigation Research 3 New White House Guidance released on 20 June 2018 https://www.whitehouse.gov/wp- content/uploads/2018/06/National-Near- Earth-Object-Preparedness-Strategy-and- Action-Plan-23-pages-1MB.pdf N e a r - Earth Object Observations Program – Interagency and International Partnerships – Mitigation Research National NEO Preparedness Strategy and Action Plan Goals in the New Action Plan • Enhance NEO detection, characterization, and tracking capabilities • Improve modeling, predictions, and information integration • Develop technologies for NEO deflection and disruption • Increase international cooperation on -
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DR. WILLIAM A. BEZOUSKA Dr. William A. Bezouska is a project engineer at The Aerospace Corporation. Bezouska has spent the last decade at Aerospace studying international developments in space. Prior to that, he worked in the academic community on small satellites and robotic space systems at the Information Sciences Institute. He began his career at Westinghouse in the nuclear power industry. Bezouska received his bachelor’s degree in mechanical engineering from the University of Notre Dame and his Ph.D. in astronautical engineering from the University of Southern California. ABOUT THE CENTER FOR SPACE POLICY AND STRATEGY The Center for Space Policy and Strategy is dedicated to shaping the future by providing nonpartisan research and strategic analysis to decisionmakers. The center is part of The Aerospace Corporation, a nonprofit organization that advises the government on complex space enterprise and systems engineering problems. The views expressed in this publication are solely those of the author(s), and do not necessarily reflect those of The Aerospace Corporation, its management, or its customers. Contact us at www.aerospace.org/policy or [email protected] Summary U.S. aspirations for continued leadership in space will require drawing from all sources of human creativity and inspiration. One important source is art, which can connect people and engage them in technological progress and scientific discovery. Art and space have connections going back to the early days of the space race. Creating art about space, for space, or even in space has helped propel both fields forward. This paper highlights the intersections between space and art—including some surprising ones—to demonstrate how art can be woven into U.S. -
Urania Nr 5/2019
DWUMIESIĘCZNIK . Tom XC . 5/2019 (803) CENA 14,90 ZŁ w tym 8% VAT CIEMNA MATERIA DODATEK Międzynarodowej Unii Astronomicznej na temat ochrony ciemnego nieba ISSN 1689-6009 indeks 401323 ZACHOWAĆ CIEMNOŚĆ! Nowe odcinki „Astronarium” na antenie TVP i w serwisie YouTube Od 11 lipca prezentujemy odcinki nowego sezonu ASTRONARIUM: nowa czołówka, nowe studio, nowe tematy Aktualne godziny emisji w ogólnopolskim pasmie TVP3 czwartek godz. 17.00 powtórki: piątek godz. 11.00 Wszystkie odcinki na: https://www.youtube.com/AstronariumPL KOPRODUKCJA FINANSOWANIE SŁOWEM WSTĘPU Urania nasza Muza Dla szkół, uczelni oraz miłośników astronomii i amatorów nocnego nieba yle jakoś przetrwać tę szaloną jesień! Co znaczy przygotowywać dwutygodnik dla telewizji i dwumiesięcznik do EMPiK-ów i kiosków, wiedzą tylko moi przyjaciele i współpracownicy tworzący Uranię i Astronarium. Do tego doszły jeszcze wyjątkowo liczne wyjazdy promocyjne i imprezy, jak rocznica lądowania na Księżycu w Centrum Nauki EXPERYMENT w Gdyni, AstroShow Delty Optical w Chęcinach, European Rover Challenge, czyli łaziki marsjańskie w Kielcach, World Space Week we Wrocławiu i Noc w Instytucie BLotnictwa na Okęciu w Warszawie i pewnie jeszcze kilka, o których zapomniałem. Wszędzie tam byli reprezentanci Uranii i Astronarium, rozdali setki egzemplarzy czasopism, pamiątek i ulotek, zorganizowali dziesiątki projekcji filmowych. Wszystkim Kolegom serdecznie dziękuję za udział w tych wydarzeniach, a gospodarzy innych imprez, na które nie daliśmy rady dotrzeć, Komitet Noblowski zapomniał gorąco przepraszam. To wszystko oczywiście w ferworze codziennych obowiązków, dziennikarskich, naukowych, o Aleksandrze Wolszczanie… dydaktycznych, które na co dzień dotykają nasze zespoły. Skandal! To jeszcze nie koniec. Naszym służbowym obowiązkiem było uczestnictwo w 39. Zjeździe Polskiego Towarzystwa Astronomicznego i poprzedzającym go Space Forum organizacji pozarządowych w Olsztynie oraz obchodach jubileuszu 100-lecia Polskiego Towarzystwa Miłośników Astronomii w Krakowie. -
On Women, Gender, and Feminism
WOMEN’S STUDIES LIBRARIAN NEW BOOKS ON WOMEN, GENDER, AND FEMINISM Number 53 Fall 2008 University of Wisconsin System NEW BOOKS ON WOMEN, GENDER, & FEMINISM No. 53, Fall 2008 CONTENTS Scope Statement .................. 1 Reference/ Bibliography . 61 Anthropology...................... 1 Religion/ Spirituality . 63 Art/ Architecture/ Photography . 2 Science/ Mathematics/ Technology . 67 Biography ........................ 5 Sexuality ........................ 68 Economics/ Business/ Work . 11 Sociology/ Social Issues . 69 Education ....................... 14 Sports & Recreation . 76 Film/ Theater..................... 15 Women’s Movement/ General Women's Studies . 77 Health/ Medicine/ Biology . 17 Periodicals ...................... 79 History.......................... 21 Indexes Humor.......................... 28 Authors, Editors, & Translators . 80 Language/ Linguistics . 29 Subjects....................... 99 Law ............................ 29 Citation Abbreviations . 127 Lesbian Studies .................. 31 Lesbian, Gay, Bisexual, Transgender, Intersex, & Queer Studies . 32 New Books on Women, Gender, & Feminism is published by Literature Phyllis Holman Weisbard, Women's Studies Librarian for the University of Wisconsin System, 430 Memorial Library, 728 Drama ........................ 35 State Street, Madison, WI 53706. Phone: (608) 263-5754. Fiction ........................ 37 Email: wiswsl @library.wisc.edu. Editor: Linda Fain. Compilers: Elzbieta Beck, Amy Dachenbach, JoAnne Lehman, Heather History & Criticism . 38 Shimon, Phyllis Holman -
APPENDIX E: Bibliography of ECOTOX Open Literature for Alachlor
APPENDIX E: Bibliography of ECOTOX Open Literature for Alachlor Explanation of OPP Acceptability Criteria and Rejection Codes for ECOTOX Data Studies located and coded into ECOTOX must meet acceptability criteria, as established in the Interim Guidance of the Evaluation Criteria for Ecological Toxicity Data in the Open Literature, Phase I and II, Office of Pesticide Programs, U.S. Environmental Protection Agency, July 16, 2004. Studies that do not meet these criteria are designated in the bibliography as “Accepted for ECOTOX but not OPP.” The intent of the acceptability criteria is to ensure data quality and verifiability. The criteria parallel criteria used in evaluating registrant-submitted studies. Specific criteria are listed below, along with the corresponding rejection code. · The paper does not report toxicology information for a chemical of concern to OPP; (Rejection Code: NO COC) · The article is not published in English language; (Rejection Code: NO FOREIGN) · The study is not presented as a full article. Abstracts will not be considered; (Rejection Code: NO ABSTRACT) · The paper is not publicly available document; (Rejection Code: NO NOT PUBLIC (typically not used, as any paper acquired from the ECOTOX holding or through the literature search is considered public) · The paper is not the primary source of the data; (Rejection Code: NO REVIEW) · The paper does not report that treatment(s) were compared to an acceptable control; (Rejection Code: NO CONTROL) · The paper does not report an explicit duration of exposure; (Rejection Code: NO DURATION) · The paper does not report a concurrent environmental chemical concentration/dose or application rate; (Rejection Code: NO CONC) · The paper does not report the location of the study (e.g., laboratory vs. -
List of Publications
Patrick A. Taylor Contact Lunar and Planetary Institute Office: 281-486-2146 Information Universities Space Research Association Mobile: 443-254-7368 3600 Bay Area Blvd. [email protected] Houston, TX 77058 USA www.naic.edu/∼ptaylor ORCID: 0002-2493-943X Refereed Taylor, P.A., E.G. Rivera-Valent´ın,L.A.M. Benner, S.E. Marshall, A.K. Virkki, F.C.F. Publications Venditti, L.F. Zambrano-Marin, S.S. Bhiravarasu, B. Aponte-Hernandez, C. Rodriguez Sanchez-Vahamonde, and J.D. Giorgini, Arecibo Radar Observations of Near-Earth As- teroid (3200) Phaethon During the 2017 Apparition, Planetary and Space Science 167, 1-8, 2019. Taylor, P.A. and J.L. Margot, Tidal End States of Binary Asteroid Systems with a Nonspherical Component, Icarus 229, 418-422, 2014. Taylor, P.A., and J.L. Margot, Binary Asteroid Systems: Tidal End States and Esti- mates of Material Properties, Icarus 212, 661-676, 2011. Taylor, P.A., and J.L. Margot, Tidal Evolution of Close Binary Asteroid Systems, Celestial Mechanics and Dynamical Astronomy 108, 315-338, 2010. Taylor, P.A., J.L. Margot, D. Vokrouhlick´y,D.J. Scheeres, P. Pravec, S.C. Lowry, A. Fitzsimmons, M.C. Nolan, S.J. Ostro, L.A.M. Benner, J.D. Giorgini, and C. Magri, Spin Rate of Asteroid (54509) 2000 PH5 Increasing Due to the YORP Effect, Science 316, 274-277, 2007. Virkki, A.K., S.E. Marshall, F.C.F. Venditti, L.F. Zambrano-Marin, D.C. Hickson, A. McGilvray, P.A. Taylor, and 23 colleagues, Arecibo Planetary Radar Observations of Near-Earth Asteroids: 2017 December - 2019 December, submitted. -
Status of Planetary Defense
Status of Planetary Defense Lindley Johnson NASA’s Planetary Defense Officer [email protected] Planetary Defense Coordination Office Planetary Science Division NASA Headquarters Washington, DC Space Portal Lecture Series May 20, 2020 n a s a . g o v / planetarydefense Near-Earth Objects (NEOs) Asteroids and comets with orbits that bring them within one-and-a-third times the distance from the Sun to Earth, or 1.3 astronomical units (blue zone) Earth Orbit Potentially Hazardous Objects • NEOs with orbits that bring them within 4.7 million miles (7.5 million km) of Earth’s orbit (red zone) and Venus Orbit • Size that could do regional damage should they impact Earth (~500 feet or ~140 meters in size and larger) Mercury Orbit Orbit of Bennu • Potentially hazardous Sun asteroid • Target of NASA’s OSIRIS-REx mission New White House Guidance released on 20 June 2018 https://www.whitehouse.gov/wp- content/uploads/2018/06/National-Near- Earth-Object-Preparedness-Strategy-and- Action-Plan-23-pages-1MB.pdf N e a r - Earth Object Observations Program – Interagency and International Partnerships – Mitigation Research National NEO Preparedness Strategy and Action Plan Goals in the New Action Plan • Enhance NEO detection, characterization, and tracking capabilities • Improve modeling, predictions, and information integration • Develop technologies for NEO deflection and disruption • Increase international cooperation on NEO preparation • Establish NEO impact emergency procedures and action protocols N e a r - Earth Object Observations Program -
Astronomical Phenomena 2019
ASTRONOMICAL PHENOMENA FOR THE YEAR 2019 Prepared Jointly by The Nautical Almanac Office United States Naval Observatory and Her Majesty’s Nautical Almanac Office United Kingdom Hydrographic Office WASHINGTON U.S. Government Publishing Office 2016 UNITED STATES Printed in the United States of America by the U. S. Government Publishing Office by permission For sale by the U.S. Government Publishing Office Superintendent of Documents P. O. Box 979050 St. Louis, MO 63197-9000 phone: 1-202-512-1800 order online at https://bookstore.gpo.gov/ UNITED KINGDOM ✂c Crown Copyright 2016 This publication is protected by international copyright law. All rights reserved. These pages may be reproduced under the terms of the UK Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/2/ acknowledging the source as Her Majesty’s Nautical Almanac Office, United Kingdom Hydrographic Office. The following United States government work is excepted from the above notice, and no copyright is claimed for it in the United States: cover, title page and reverse, pages 64-71, 73-76, 78-88. Available from HM Nautical Almanac Office UK Hydrographic Office Admiralty Way Taunton Somerset TA1 2DN [email protected] Further information: http://www.usno.navy.mil/USNO/ https://www.gov.uk/government/organisations/hm-nautical-almanac-office ASTRONOMICAL PHENOMENA FOR THE YEAR 2019 CONTENTS Page Phenomena: Perihelion Passages of Comets ... ... ... ... ... ... ... ... ... ... 3 Seasons, Moon Phases, Eclipses ... ... ... ... ... ... ... ... ... 4 Occultations, Perigee and Apogee of the Moon ... ... ... ... ... ... 5 Geocentric and Heliocentric Planetary Phenomena ... ... ... ... ... 6 Visibility of the Planets ... ... ... ... ... ... ... ... ... ... ... 7, 8 Times of Meridian Passages of the Planets ..