+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78509 (2002 RM85) Classification: Main-belt Asteroid          SPK-ID: 2078509 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1102402866195833 5.1292e-08   a 2.622649814376498 1.6474e-08 au q 2.333528147136836 1.3988e-07 au i 9.548651799376572 5.5785e-06 deg node 359.306792747206 2.2638e-05 deg peri 196.562122173849 3.1518e-05 deg M 225.3800124936349 2.6018e-05 deg tp 2459580.617452109151 (2022-Jan-01.11745211) 0.00011526 TDB period 1551.3467697315 4.25 1.4617e-05 4.002e-08 d yr n .2320564344632677 2.1864e-09 deg/d Q 2.91177148161616 1.829e-08 au   Orbit Determination Parameters    # obs. used (total)      917      data-arc span      8051 days (22.04 yr)      first obs. used      1998-10-29      last obs. used      2020-11-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57078      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:12:47   Additional Information  Earth MOID = 1.33465 au   Jupiter MOID = 2.05508 au   T_jup = 3.376  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.0   n/a MPO502630   diameter diameter 3.141 km 0.511 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.259   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   78509 (2002 RM85)          Discovered 2002-Sep-05 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2042-Oct-14 13:28 00:01 Vesta 0.0238649986759074 0.0238583221476119 0.0238716769765371 4.56588300751151 4.56588191554719 2467172.061225405 1.45924745847071 464.770683211843 37.2875468880506 -44.608315399144 67237.2500509212 T 22 CATAB v2.0f-lin.ifort 2020-Dec-18 04:12:50 2020-Dec-18 04:12 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-15 21:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin