+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   312275 (2008 AN108) Classification: Main-belt Asteroid          SPK-ID: 2312275 [ 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 .1970840401412215 8.7522e-08   a 2.596548461116543 1.9914e-08 au q 2.084810199977224 2.2872e-07 au i 6.342637402976126 5.5135e-06 deg node 287.2521042979167 7.6231e-05 deg peri 108.6330954657401 7.8404e-05 deg M 47.42250497859457 1.4839e-05 deg tp 2458799.185495860247 (2019-Nov-11.68549586) 6.3134e-05 TDB period 1528.245324092935 4.18 1.7581e-05 4.813e-08 d yr n .2355642738273531 2.71e-09 deg/d Q 3.108286722255863 2.3839e-08 au   Orbit Determination Parameters    # obs. used (total)      249      data-arc span      6371 days (17.44 yr)      first obs. used      2002-08-16      last obs. used      2020-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55514      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 18:45:01   Additional Information  Earth MOID = 1.10239 au   Jupiter MOID = 2.35898 au   T_jup = 3.381  [ hide covariance matrix ] Orbital Elements at Epoch 2457631.5 (2016-Aug-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1964048302256352 8.8143e-08   q 2.086765926274364 2.3012e-07 au tp 2457266.314863150958 (2015-Aug-31.81486315) 6.7246e-05 TDB node 287.5549190071326 7.6411e-05 deg peri 107.5481475350214 7.8603e-05 deg i 6.333978988316519 5.5008e-06 deg   Orbit Determination Parameters    # obs. used (total)      249      data-arc span      6371 days (17.44 yr)      first obs. used      2002-08-16      last obs. used      2020-01-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55514      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 18:45:01   Additional Information  Jupiter MOID = 2.35898 au   T_jup = 3.381  Orbit Covariance (6×6)   e q tp node peri i e 7.76918629355753E-15 -2.023548249102003E-14 -1.835310560754607E-12 -1.592617148626487E-13 -5.778241804640692E-13 -1.632423336035323E-14 q -2.023548249102003E-14 5.295476493661513E-14 4.443090691999988E-12 4.253415993635898E-13 1.420007133513166E-12 4.362146289397359E-14 tp -1.835310560754607E-12 4.443090691999988E-12 4.521990858496937E-9 1.14464248766659E-11 1.332474713729249E-9 3.210872099589005E-12 node -1.592617148626487E-13 4.253415993635898E-13 1.14464248766659E-11 5.838589458919528E-9 -5.794392051022686E-9 -7.93083488982342E-11 peri -5.778241804640692E-13 1.420007133513166E-12 1.332474713729249E-9 -5.794392051022686E-9 6.178399453361583E-9 8.01055067024518E-11 i -1.632423336035323E-14 4.362146289397359E-14 3.210872099589005E-12 -7.93083488982342E-11 8.01055067024518E-11 3.025887442966249E-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 16.8   n/a MPO503318   312275 (2008 AN108)          Discovered 2008-Jan-15 by Spacewatch at Kitt Peak Reference: 20120109/Numbers.arc Last Updated: 2012-01-11 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 18:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin