+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78595 (2002 SR20) Classification: Main-belt Asteroid          SPK-ID: 2078595 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1504176528139147 3.5356e-08   a 2.593619960675891 1.2954e-08 au q 2.203493733899706 9.3006e-08 au i 2.155305148104947 5.7252e-06 deg node 88.35954801430984 0.00010949 deg peri 240.2209971141662 0.00011156 deg M 111.0143074734219 2.1448e-05 deg tp 2458530.027340961117 (2019-Feb-15.52734096) 8.9523e-05 TDB period 1525.660620767705 4.18 1.143e-05 3.129e-08 d yr n .2359633558732412 1.7678e-09 deg/d Q 2.983746187452077 1.4902e-08 au   Orbit Determination Parameters    # obs. used (total)      548      data-arc span      7711 days (21.11 yr)      first obs. used      1998-10-20      last obs. used      2019-11-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5604      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 07:41:00   Additional Information  Earth MOID = 1.19315 au   Jupiter MOID = 2.34737 au   T_jup = 3.401  [ hide covariance matrix ] Orbital Elements at Epoch 2457050.5 (2015-Jan-28.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1523371551147444 3.539e-08   q 2.197726233972121 9.3232e-08 au tp 2457004.343783325548 (2014-Dec-12.84378333) 8.4135e-05 TDB node 88.39551303795476 0.00010958 deg peri 240.0797700626865 0.00011157 deg i 2.155064671304627 5.722e-06 deg   Orbit Determination Parameters    # obs. used (total)      548      data-arc span      7711 days (21.11 yr)      first obs. used      1998-10-20      last obs. used      2019-11-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5604      source      ORB      producer      Otto Matic      solution date      2019-Dec-14 07:41:00   Additional Information  Jupiter MOID = 2.34737 au   T_jup = 3.401  Orbit Covariance (6×6)   e q tp node peri i e 1.252438352448385E-15 -3.276603288193572E-15 -5.270293370607558E-13 7.59966293106317E-15 -1.702501603420643E-13 -2.356766552838132E-16 q -3.276603288193572E-15 8.692196237575331E-15 1.605247736640761E-12 -2.194142856239089E-14 5.01880466299141E-13 6.234062280830433E-16 tp -5.270293370607558E-13 1.605247736640761E-12 7.078617525693823E-9 -4.273214437983357E-11 1.780036779055143E-9 -9.351943842183577E-13 node 7.59966293106317E-15 -2.194142856239089E-14 -4.273214437983357E-11 1.200725978488842E-8 -1.200884860727668E-8 -1.565339577437868E-10 peri -1.702501603420643E-13 5.01880466299141E-13 1.780036779055143E-9 -1.200884860727668E-8 1.244869981326288E-8 1.562076027011418E-10 i -2.356766552838132E-16 6.234062280830433E-16 -9.351943842183577E-13 -1.565339577437868E-10 1.562076027011418E-10 3.274091886944912E-11 [ 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 16.0   n/a MPO449494   78595 (2002 SR20)          Discovered 2002-Sep-26 by NEAT at Palomar Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 03:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin