11277 Ballard

Asteroid September 2018 yes 11277 Ballard #D6D6D6 C. ShoemakerE. Shoemaker Palomar Obs. 8 October 1988 (11277) Ballard 1988 TW 21995 MG Robert Ballard(American oceanographer) main-belt(inner)Phocaea 23 March 2018 (JD 2458200.5) 0 28.73 yr (10,493 d) 2.9757 AU 1.8295 AU 2.4026 AU 0.2385 3.72 yr (1,360 d) 22.337° 0.2647 ms / day 22.787° 254.59° 43.574° 6.298 0.075 km >10 h 0.222 S (assumed) 13.0013.1013.53 11277 Ballard (provisional designation 1988 TW 2) is a Phocaea asteroid from the inner regions of the asteroid belt, approximately 6.3 km mi off 2 us in diameter. It was discovered on 8 October 1988, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California. The assumed S-type asteroid has a rotation period of at least 10 hours. It was named for American marine scientist Robert Ballard. Orbit and classification Ballard is a member of the Phocaea family (701). It orbits the Sun in the inner asteroid belt at a distance of 1.83–2.98 AU once every 3 years and 9 months (1,360 days; semi-major axis of 2.4 AU). Its orbit has an eccentricity of 0.24 and an inclination of 23° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar in September 1988, just four weeks prior to its official discovery observation. Ballard is not a Mars-crosser, since its aphelion is larger than 1.67 AU. Naming This minor planet was named after American marine scientist Robert Ballard (born 1942), a professor of oceanography and director of the Deep Submergence Laboratory, who is known for the discovery of the RMS Titanic and the German battleship Bismarck. The official naming citation was published by the Minor Planet Center on 26 May 2002 (M.P.C. 45748). Physical characteristics Ballard is an assumed, stony S-type asteroid, in line with the Phocaea family's overall spectral type.23 Rotation period In July 2010, a rotational lightcurve of Ballard was obtained from two nights of photometric observations in the R-band by Italian astronomer Albino Carbognani at the OAVdA Observatory B04 in Italy. Lightcurve analysis gave a tentative rotation period of at least 10 hours with a brightness amplitude of more than 0.25 magnitude (U=2-). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Ballard measures between 5.65 and 6.445 kilometers in diameter and its surface has an albedo between 0.19 and 0.289. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.23 – derived from the family's largest member, 25 Phocaea – and calculates a diameter of 6.65 kilometers based on an absolute magnitude of 13.1. References 30em 2017-06-05 last obs. JPL Small-Body Database Browser: 11277 Ballard (1988 TW2) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011277 Jet Propulsion Laboratory 25 September 2018 11277 Ballard (1988 TW2) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=11277 25 September 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 25 September 2018 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 Asteroid 11277 Ballard Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=11277+Ballard 25 September 2018 October 2026 InternetArchiveBot 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 11277 25 September 2018 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 46350317 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 9341381 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 EAR-A-COMPIL-5-NEOWISEDIAM-V1.0 2016PDSS..247.....M 25 September 2018 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 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) Carbognani, Albino January 2011 Lightcurves and Periods of Eighteen NEAs and MBAs The Minor Planet Bulletin 38 1 57–63 1052-8091 2011MPBu...38...57C External links 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 Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center 11277 (11276) 1988 TM1 11277 11278 Telesio 011277 Category:Discoveries by Carolyn S. Shoemaker Category:Discoveries by Eugene Merle Shoemaker Category:Named minor planets 19881008