1830 Pogson

Stony main-belt binary asteroid December 2018 yes 1830 Pogson #D6D6D6 P. Wild Zimmerwald Obs. 17 April 1968 (1830) Pogson 1968 HA1926 GW1929 EE1942 EC 11945 BB1953 RE 11955 FX1955 GE1961 AC1969 QM1971 BJ1972 NA 11972 OC1972 OD Norman Pogson(English astronomer) main-belt(inner)Florabinary 27 April 2019 (JD 2458600.5) 0 92.52 yr (33,794 d) 2.3117 AU 2.0652 AU 2.1884 AU 0.0563 3.24 yr (1,182 d) 342.96° 0.3044 ms / day 3.9540° 147.45° 334.96° 1 (D: 2.52 km, P: 24.24 h) 7.710 0.669 km8.284 0.116 km8.35 km 2.56999 0.00004 h 0.21880.23610.274 Tholen SSMASS SB–V 0.910U–B 0.500 12.4512.61 1830 Pogson, provisional designation 1968 HA, is a stony Florian asteroid and an asynchronous binary system from the inner regions of the asteroid belt, approximately 8 km mi off 1 us in diameter. It was discovered on 17 April 1968, by Swiss astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. The S-type asteroid has a rotation period 2.6 of hours. It was named for English astronomer Norman Pogson. The discovery of its 2.5-kilometer sized companion was announced in May 2007. Orbit and classification According to a HCM-analysis by David Nesvorný, Pogson is a member of the Flora family (402), a giant asteroid clan and the largest family of stony asteroids in the asteroid belt. It has also been grouped into the Augusta family (list) by Zappalà, while for Milani and Knežević, who don't recognize the Florian clan as a family, Pogson is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.3 AU once every 3 years and 3 months (1,182 days; semi-major axis of 2.19 AU). Its orbit has an eccentricity of 0.06 and an inclination of 4° with respect to the ecliptic. The asteroid was first observed as 1926 GW at Simeiz Observatory in April 1926. The body's observation arc begins with its observation as 1929 EE at Heidelberg Observatory in March 1929, or 39 years prior to its official discovery observation at Zimmerwald. Naming This minor planet was named after English astronomer Norman Pogson (1829–1891), inventor of the modern astronomical magnitude scale. At the Radcliffe and Madras observatories, he discovered eight asteroids, including 42 Isis and 67 Asia. The official 1830 naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4236). The lunar crater Pogson was also named in his honor. Physical characteristics In the Tholen and SMASS classification, Pogson is a common, stony S-type asteroid. Rotation period In April 2007, a rotational lightcurve of Pogson was obtained from photometric observations by an international collaboration of Australian, European and American astronomers, namely, David Higgins , Petr Pravec, Peter Kušnirák, Julian Oey and Donald Pray. Lightcurve analysis gave a rotation period of 2.5702 0.0001 hours with a brightness variation of 0.12 magnitude (U=3). In the following month, a more refined period of 2.56990 0.00004 hours with the same amplitude was measured by Petr Pravec (U=3). Additional period determinations were made by Melissa Dykhuis and collaborators (2.5698 h) at the Calvin College Observatory H62 during 2008 (U=2+), and by Pierre Antonini (2.5699 h) and Julian Oey (2.604 h) in March 2013 (U=3-/2). Satellite During the photometric observation in 2007, it was also revealed, that Pogson is an asynchronous binary system with a minor-planet moon in its orbit. The mutual eclipse and occultation events showed that the companion orbits its primary every 24.24 hours. Based on a secondary-to-primary diameter ratio of 0.32 or larger, Johnston's archive estimates a diameter of 2.52 kilometers for the satellite, separated by 8 kilometers from its primary. Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Pogson measures between 7.7 and 8.35 kilometers in diameter and its surface has an albedo between 0.2188 and 0.274. The Collaborative Asteroid Lightcurve Link adopts the result from Petr Pravec's revised WISE-data, that is, an albedo of 0.2188 and a diameter of 8.35 kilometers based on an absolute magnitude of 12.659. References 30em 2018-10-22 last obs. JPL Small-Body Database Browser: 1830 Pogson (1968 HA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001830 Jet Propulsion Laboratory 7 December 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 147 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1831 (1830) Pogson 1830 Pogson (1968 HA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1830 7 December 2018 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009 2009dmpn.book.....S https://cds.cern.ch/record/1339661 Asteroids and comets rotation curves – (1830) Pogson Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001830 7 December 2018 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001830 dead Asteroids with Satellites Database – (1830) Pogson Johnston's Archive 21 September 2014 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/astmoons/am-01830.html 7 December 2018 Asteroid (1830) Pogson – Proper elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1830&pc=1.1.6 4 December 2018 Asteroid 1830 Pogson Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1830+Pogson 7 December 2018 https://web.archive.org/web/20181209124142/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1830+Pogson 9 December 2018 dead D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 119280014 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 1830 7 December 2018 Petr Pravec Alan W. Harris Peter Kusnirák Adrián Galád Kamil Hornoch September 2012 Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 6 A. K. Mainzer J. M. Bauer R. M. Cutri T. Grav E. A. Kramer J. R. Masiero C. R. Nugent S. M. Sonnett R. A. Stevenson E. L. Wright June 2016 NEOWISE Diameters and Albedos V1.0 https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_COMPIL_5_NEOWISEDIAM_V1_0/data/neowise_mainbelt.tab NASA Planetary Data System 247 EAR-A-COMPIL-5-NEOWISEDIAM-V1.0 2016PDSS..247.....M 7 December 2018 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 35447010 (catalog) 6 P. Pravec P. Scheirich D. Vokrouhlický A. W. Harris P. Kusnirák K. Hornoch D. P. Pray D. Higgins A. Galád J. Világi S. Gajdos L. Kornos J. Oey M. Husárik W. R. Cooney J. Gross D. Terrell R. Durkee J. Pollock D. E. Reichart K. Ivarsen J. Haislip A. LaCluyze Yu. N. Krugly N. Gaftonyuk R. D. Stephens R. Dyvig V. Reddy V. Chiorny O. Vaduvescu Longa-Peñ P. a A. Tudorica B. D. Warner G. Masi J. Brinsfield Gonç R. alves P. Brown Z. Krzeminski O. Gerashchenko V. Shevchenko I. Molotov F. Marchis March 2012 Binary asteroid population. 2. Anisotropic distribution of orbit poles of small, inner main-belt binaries Icarus 218 1 125–143 2012Icar..218..125P 10.1016/j.icarus.2011.11.026 D. Higgins P. Pravec P. Kusnirak J. Oey D. Pray May 2007 (1830) Pogson http://www.cbat.eps.harvard.edu/cbet/000900/CBET000957.txt Central Bureau Electronic Telegrams 957 1 2007CBET..957....1H 7 December 2018 Oey, Julian October 2014 Lightcurve Analysis of Asteroids from Blue Mountains Observatory in 2013 The Minor Planet Bulletin 41 4 276–281 1052-8091 2014MPBu...41..276O 6 Melissa J. Dykhuis Lawrence A. Molnar Christopher J. Gates Joshua A. Gonzales Jared J. Huffman Aaron R. Maat Stacy L. Maat Matthew I. Marks Alyssa R. Massey-Plantinga Nathan D. McReynolds Jeremy A. Schut Joshua P. Stoep Andrew J. Stutzman Brandon C. Thomas George W. Vander Tuig Jess W. Vriesema Richard Greenberg March 2016 Efficient spin sense determination of Flora-region asteroids via the epoch method Icarus 267 174–203 2016Icar..267..174D 10.1016/j.icarus.2015.12.021 External links Asteroids with Satellites, Robert Johnston, johnstonsarchive.net Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1830 1829 Dawson 1830 1831 Nicholson 001830 Category:Discoveries by Paul Wild (Swiss astronomer) Category:Named minor planets 001830 001830 001830 19680417