+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20492 (1999 OC5) Classification: Main-belt Asteroid          SPK-ID: 2020492 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2083725281079149 1.8315e-08   a 2.555951212547495 8.5887e-09 au q 2.023361196668482 4.5526e-08 au i 15.43399861149918 6.2938e-07 deg node 129.7023816107713 4.4854e-06 deg peri 197.4191170813675 6.9623e-06 deg M 80.89879682986793 5.4126e-06 deg tp 2458865.097088310309 (2020-Jan-16.59708831) 2.1721e-05 TDB period 1492.544425131789 4.09 7.523e-06 2.06e-08 d yr n .2411988507264785 1.2157e-09 deg/d Q 3.088541228426507 1.0378e-08 au   Orbit Determination Parameters    # obs. used (total)      2007      data-arc span      11724 days (32.10 yr)      first obs. used      1989-02-02      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45627      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:22:17   Additional Information  Earth MOID = 1.0135 au   Jupiter MOID = 2.25835 au   T_jup = 3.357  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4   n/a MPO344464   diameter diameter 5.058 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 6.817 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm] geometric albedo albedo 0.478   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20492 (1999 OC5)          Discovered 1999-Jul-16 by LINEAR at Socorro Reference: 20010109/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 OC5 = 1989 CV4 = 1998 GH6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 15:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin