+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   295581 (2008 ST112) Classification: Main-belt Asteroid          SPK-ID: 2295581 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1767725560173237 7.1887e-08   a 3.019075867416562 3.4903e-08 au q 2.485386109523118 2.2366e-07 au i 4.280261831340574 7.9528e-06 deg node 138.2183712777722 7.7537e-05 deg peri 192.1651600851394 7.9425e-05 deg M 115.1634598129046 1.5471e-05 deg tp 2458387.554769677041 (2018-Sep-26.05476968) 8.1953e-05 TDB period 1916.061598659431 5.25 3.3227e-05 9.097e-08 d yr n .1878854000580531 3.2582e-09 deg/d Q 3.552765625310006 4.1073e-08 au   Orbit Determination Parameters    # obs. used (total)      197      data-arc span      5935 days (16.25 yr)      first obs. used      2003-10-29      last obs. used      2020-01-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59899      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 16:41:02   Additional Information  Earth MOID = 1.47468 au   Jupiter MOID = 1.80826 au   T_jup = 3.219  [ hide covariance matrix ] Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1791304999946912 7.291e-08   q 2.478228137092684 2.2709e-07 au tp 2456463.150193139236 (2013-Jun-19.65019314) 8.5076e-05 TDB node 138.3921276530997 7.7131e-05 deg peri 190.8176124143121 7.8925e-05 deg i 4.289201648340176 7.9826e-06 deg   Orbit Determination Parameters    # obs. used (total)      197      data-arc span      5935 days (16.25 yr)      first obs. used      2003-10-29      last obs. used      2020-01-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59899      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 16:41:02   Additional Information  Jupiter MOID = 1.80826 au   T_jup = 3.219  Orbit Covariance (6×6)   e q tp node peri i e 5.315835542365844E-15 -1.643175973333809E-14 6.702619715407518E-13 -1.100673579706764E-14 1.040851976861334E-13 -2.426652984820992E-15 q -1.643175973333809E-14 5.156822612958762E-14 -2.881523633198441E-12 2.970145275061994E-14 -3.910215020455683E-13 8.601720693687179E-15 tp 6.702619715407518E-13 -2.881523633198441E-12 7.237959282409143E-9 2.873954601067567E-14 1.427862251166822E-9 -1.348683105028168E-12 node -1.100673579706764E-14 2.970145275061994E-14 2.873954601067567E-14 5.949179213161952E-9 -5.931820073874289E-9 1.03408708204869E-10 peri 1.040851976861334E-13 -3.910215020455683E-13 1.427862251166822E-9 -5.931820073874289E-9 6.229207404045851E-9 -1.033749483346615E-10 i -2.426652984820992E-15 8.601720693687179E-15 -1.348683105028168E-12 1.03408708204869E-10 -1.033749483346615E-10 6.372210921538148E-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 15.9   n/a MPO455185   295581 (2008 ST112)          Discovered 2008-Sep-22 by Spacewatch at Kitt Peak Reference: 20110912/Numbers.arc Last Updated: 2011-09-14 [ show close-approach data ] Alternate Designations  2008 ST112 = 2006 EX39  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-05 15:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin