(251732) 1998 HG49

Sub-kilometer asteroid and near-Earth object October 2019 yes (251732) 1998 HG 49 #FFC2E0 Spacewatch Kitt Peak National Obs. 27 April 1998 (251732) 1998 HG 49 Amor NEO 4 September 2017 (JD 2458000.5) 0 16.91 yr (6,175 days) 1.3357 AU 1.0654 AU 1.2006 AU 0.1126 1.32 yr (480 days) 100.57° 0.7493 ms / day 4.1954° 44.829° 324.29° 0.0767 AU (29.9 LD) 0.13–0.29 km (estimate) 21.7 21.8 (251732) 1998 HG 49 is a sub-kilometer asteroid and near-Earth object of the Amor group, approximately 200 meters in diameter. It was discovered on 27 April 1998 by astronomers of the Spacewatch program at the Kitt Peak National Observatory near Tucson, Arizona, United States. Description 1998 HG 49 is an Amor asteroid because its perihelion is less than 1.3 AU and does not cross Earth's orbit. It is on a low-eccentricity and low-inclination orbit between the orbits of Earth and Mars. This is within a region of stability where bodies may survive for the age of the Solar System, and hence it may have formed near its current orbit. The asteroid orbits the Sun at a distance of 1.1–1.3 AU once every 1 year and 4 months (480 days; semi-major axis of 1.20 AU). Its orbit has an eccentricity of 0.11 and an inclination of 4° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Kitt Peak in April 1998. Between 1900 and 2200 its closest approach to Earth is more than 0.14 AU. Numbering and naming This minor planet was numbered by the Minor Planet Center on 28 November 2010. As of 2018, it has not been named. See also (225312) 1996 XB 27 (350462) 1998 KG 3 References 2015-03-24 last obs. JPL Small-Body Database Browser: 251732 (1998 HG49) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2251732;cad=1 Jet Propulsion Laboratory 17 January 2018 251732 (1998 HG49) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=251732 17 January 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 25 February 2018 JPL close-approach data Retrieved 2011-09-05 NeoDys-2 Retrieved 2011-09-05 N. Wyn Evans Serge Tabachnik May 1999 Possible long-lived asteroid belts in the inner Solar System Nature 399 6731 41 1999Natur.399...41E 10.1038/19919 astro-ph/9905067 4418335 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 251732 251732 1998HG49 251732 (251732) 1998 HG 49 251732 251732 251732 19980427