+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78492 (2002 RX61) Classification: Main-belt Asteroid          SPK-ID: 2078492 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07064997712872337 4.6337e-08   a 2.33972103549912 9.6493e-09 au q 2.174419797853515 1.0891e-07 au i 12.96690603802186 4.9701e-06 deg node 23.8097385644501 1.4388e-05 deg peri 180.1211738032062 2.9374e-05 deg M 145.9805530084846 2.7592e-05 deg tp 2458470.425331888997 (2018-Dec-17.92533189) 9.8857e-05 TDB period 1307.207546397431 3.58 8.0866e-06 2.214e-08 d yr n .2753962069696843 1.7036e-09 deg/d Q 2.505022273144727 1.0331e-08 au   Orbit Determination Parameters    # obs. used (total)      1555      data-arc span      9162 days (25.08 yr)      first obs. used      1995-10-17      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47567      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:06:36   Additional Information  Earth MOID = 1.1707 au   Jupiter MOID = 2.45167 au   T_jup = 3.528  [ hide covariance matrix ] Orbital Elements at Epoch 2457379.5 (2015-Dec-23.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06986272266868866 4.6451e-08   q 2.176559565180018 1.0906e-07 au tp 2457162.447921278100 (2015-May-19.94792128) 9.6842e-05 TDB node 23.85922643316906 1.4379e-05 deg peri 180.0829661041017 2.955e-05 deg i 12.97088873011041 4.971e-06 deg   Orbit Determination Parameters    # obs. used (total)      1555      data-arc span      9162 days (25.08 yr)      first obs. used      1995-10-17      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47567      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:06:36   Additional Information  Jupiter MOID = 2.45167 au   T_jup = 3.528  Orbit Covariance (6×6)   e q tp node peri i e 2.157664125012155E-15 -5.048832229918291E-15 -9.865156368987407E-13 -1.764737841345316E-16 -2.259815583862617E-13 2.825787057935534E-16 q -5.048832229918291E-15 1.189428656941225E-14 2.581064591210787E-12 3.68954174590589E-16 6.041728878545371E-13 -1.672037880090009E-16 tp -9.865156368987407E-13 2.581064591210787E-12 9.37836803418948E-9 -9.240201495370456E-12 2.505569224684073E-9 5.967877948279562E-12 node -1.764737841345316E-16 3.68954174590589E-16 -9.240201495370456E-12 2.06746028477804E-10 -2.035241444266214E-10 -9.971930638671657E-12 peri -2.259815583862617E-13 6.041728878545371E-13 2.505569224684073E-9 -2.035241444266214E-10 8.732089800126918E-10 1.137842891042455E-11 i 2.825787057935534E-16 -1.672037880090009E-16 5.967877948279562E-12 -9.971930638671657E-12 1.137842891042455E-11 2.47112107921184E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.6   n/a MPO337847   diameter diameter 6.180 km 1.672 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.052   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   78492 (2002 RX61)          Discovered 2002-Sep-05 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  2002 RX61 = 1995 UG50  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 00:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin