+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118279 (1998 RG23) Classification: Main-belt Asteroid          SPK-ID: 2118279 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .185386842604693 4.3101e-08   a 2.143259012447444 8.1087e-09 au q 1.74592699124576 9.6695e-08 au i 2.465730548906278 3.1092e-06 deg node 68.16159265992009 7.8194e-05 deg peri 315.226662745869 7.8747e-05 deg M 6.457380352031167 7.5384e-06 deg tp 2459179.942784813462 (2020-Nov-26.44278481) 2.4007e-05 TDB period 1146.068074621892 3.14 6.504e-06 1.781e-08 d yr n .3141174664679238 1.7826e-09 deg/d Q 2.540591033649128 9.6119e-09 au   Orbit Determination Parameters    # obs. used (total)      1009      data-arc span      10276 days (28.13 yr)      first obs. used      1992-11-24      last obs. used      2021-01-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46561      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:19:19   Additional Information  Earth MOID = .749205 au   Jupiter MOID = 2.91342 au   T_jup = 3.688  [ 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 16.62   n/a E2021B55   118279 (1998 RG23)          Discovered 1998-Sep-14 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-10 20:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin