(457175) 2008 GO98

Jupiter family comet September 2018 yes (457175) 2008 GO 98362P/2008 GO 98 #D6D6D6 Spacewatch Kitt Peak National Obs. 8 April 2008 (457175) 2008 GO 98 362P Jupiter familyquasi-Hilda 9 June 2026 (JD 2461200.5) 0 24.02 yr (8,774 d) 5.0780 AU 2.8643 AU 14 June 2032Horizons2032 3.9712 AU 0.27872 7.89 yr (2,883 d) 85.852° 0.1245 ms / day 15.560° 192.52° 53.365° 0.3582 AU 2.927 5.5 - 24.7 km (est.)14.64 h (calculated) 10.74 0.01 hLightcurve-plot-Warner 0.057 (assumed) C (assumed) 12.915.1 (457175) 2008 GO 98, cometary number 362P, is a Jupiter-family comet in a quasi-Hilda orbit within the outermost regions of the asteroid belt. It was discovered on 8 April 2008, by astronomers of the Spacewatch program at Kitt Peak National Observatory near Tucson, Arizona, in the United States. This presumably carbonaceous body has a diameter of approximately 15 km mi off 1 us and rotation period of 10.7 hours. Orbit and classification 2008 GO 98 is classified as a member of the dynamical Hilda group, as well as a Jupiter family comet that shows clear cometary activity, which has also been described as a "quasi-Hilda comet". Orbital backward integration suggests that it might have been a centaur or trans-Neptunian object that ended its dynamical evolution as a quasi-Hilda comet. It may have reached the belt during the last few hundred years.de la Fuente Marcos Raúl de la Fuente Marcos Carlos 15 July 2022 Recent arrivals to the main asteroid belt Celestial Mechanics and Dynamical Astronomy 134 5 38 2207.07013 2022CeMDA.134...38D 10.1007/s10569-022-10094-4 free It orbits the Sun in the outer asteroid belt at a distance of 2.9–5.1 AU once every 7 years and 11 months (2,883 days; semi-major axis of 3.96 AU). Its orbit has an eccentricity of 0.28 and an inclination of 16° with respect to the ecliptic. The body's observation arc begins with a precovery taken by the Sloan Digital Sky Survey in October 2001, more than 5 years prior to its official discovery observation by Spacewatch. Although 2008 GO 98 orbits in the asteroid belt, it has a Jupiter Tisserand's parameter (TJ) of 2.926, just below Jewitt's threshold of 3, which serves as a distinction between the main-belt asteroids (TJ larger than 3) and the Jupiter-family comets (TJ between 2 and 3). Numbering and naming This minor planet was numbered by the Minor Planet Center on 16 February 2016 (M.P.C. 98587). As of 2020, it has not been named. Physical characteristics 2008 GO 98 is an assumed C-type asteroid. Rotation period In August 2017, a rotational lightcurve of 2008 GO 98 was obtained from photometric observations by American astronomer Brian Warner at the Palmer Divide Station U82 in California. Lightcurve analysis gave a rotation period of 10.74 0.01 hours with a small brightness amplitude of 0.12 magnitude (U=2).Lightcurve-plot-Warner Diameter and albedo The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous body of 0.057 and calculates a diameter of 14.64 kilometers based on an absolute magnitude of 12.9. Other estimates, taking into account several published magnitude measurements and a large range of albedo assumptions, estimate a diameter range of 5.5 to 24.7 kilometers. Notes Lightcurve-plot-Warner Lightcurve plot of (457175) 2008 GO 98, by B. D Warner, at CS3 (2017). Rotation period 10.74 0.01 hours with a brightness amplitude of 0.12 0.02 mag. Quality Code is 2. Summary figures at the LCDB. References 30em 2025-10-23 last obs. JPL Small-Body Database Browser: 457175 (2008 GO98) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2457175 Jet Propulsion Laboratory 7 July 2026 457175 (2008 GO98) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=457175 12 December 2020 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 14 February 2018 MPEC 2017-N50 : COMETARY ACTIVITY IN (457175) 2008 GO98 Minor Planet Center https://www.minorplanetcenter.net/mpec/K17/K17N50.html 14 February 2018 362P/2008 GO98 Asteroid-Analytics 21 July 2017 https://asteroidanalytics.com/2008go98/ 14 February 2018 R. Gil-Hutton E. García-Migani May 2016 Comet candidates among quasi-Hilda objects https://www.aanda.org/articles/aa/pdf/2016/06/aa28184-16.pdf Astronomy and Astrophysics 590 5 2016A&A...590A.111G 10.1051/0004-6361/201628184 14 February 2018 free The Tisserand Parameter David Jewitt http://www2.ess.ucla.edu/~jewitt/tisserand.html 15 September 2018 https://web.archive.org/web/20100626163811/http://www2.ess.ucla.edu/~jewitt/tisserand.html 26 June 2010 dead 457175 14 February 2018 Horizons Batch for 457175 (2008 GO98) on 2032-Jun-14 JPL Horizons Perihelion occurs when rdot flips from negative to positive https://ssd.jpl.nasa.gov/api/horizons.api?format=text&COMMAND=%27362P%27&START_TIME=%272032-Jun-14%2012%27&STOP_TIME=%272032-Jun-15%27&STEP_SIZE=%271%20hour%27&QUANTITIES=%2719%27 2026-04-19 (JPL#41 Soln.date: 2026-Mar-14) External links COMETARY ACTIVITY IN (457175) 2008 GO98, Minor Planet Electronic Circular, Minor Planet Center It's an Asteroid, It's a Comet, It's... well, Both for Now!, Catalina Sky Survey, Lunar and Planetary Laboratory Cometary activity in (457175) 2008 GO98, The Virtual Telescope, 23 August 2017 Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Discovery Circumstances: Numbered Minor Planets (455001)-(460000) – Minor Planet Center 457175 2457175 362P/(457175) 2008 GO98 at Seiichi Yoshida's website 362P at Gideon van Buitenen's website 457175 (457175) 2008 GO 98 457175 0362 457175 20080408