+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305349 (2008 BG7) Classification: Main-belt Asteroid          SPK-ID: 2305349 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1434658737989516 7.5282e-08   a 2.752902571940111 2.6942e-08 au q 2.357954998973341 2.1931e-07 au i 8.758262850898943 5.9441e-06 deg node 295.6674367421057 5.7014e-05 deg peri 141.2721040507546 7.3049e-05 deg M 295.499461284156 3.6739e-05 deg tp 2459299.413500387853 (2021-Mar-25.91350039) 0.00016936 TDB period 1668.340486483318 4.57 2.4492e-05 6.706e-08 d yr n .2157832905912637 3.1678e-09 deg/d Q 3.14785014490688 3.0808e-08 au   Orbit Determination Parameters    # obs. used (total)      172      data-arc span      6556 days (17.95 yr)      first obs. used      2002-12-06      last obs. used      2020-11-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53297      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:39:36   Additional Information  Earth MOID = 1.38081 au   Jupiter MOID = 2.09606 au   T_jup = 3.313  [ hide covariance matrix ] Orbital Elements at Epoch 2457517.5 (2016-May-09.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1421706543895393 7.3339e-08   q 2.363074950869214 2.129e-07 au tp 2457622.689022857808 (2016-Aug-22.18902286) 0.00018031 TDB node 295.8988462570317 5.7227e-05 deg peri 139.7637623155521 7.3811e-05 deg i 8.736884635774901 5.9345e-06 deg   Orbit Determination Parameters    # obs. used (total)      172      data-arc span      6556 days (17.95 yr)      first obs. used      2002-12-06      last obs. used      2020-11-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53297      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:39:36   Additional Information  Jupiter MOID = 2.09606 au   T_jup = 3.313  Orbit Covariance (6×6)   e q tp node peri i e 5.378546918868346E-15 -1.554381335951962E-14 3.288327082010726E-12 -9.528952113803031E-14 1.209051140493988E-12 -1.573266858814993E-14 q -1.554381335951962E-14 4.532665178628147E-14 -1.017090913463838E-11 2.844141153081968E-13 -3.673219651273632E-12 4.648398061246668E-14 tp 3.288327082010726E-12 -1.017090913463838E-11 3.25123586648745E-8 -4.624599745320128E-11 8.461032418504663E-9 4.179439474856326E-11 node -9.528952113803031E-14 2.844141153081968E-13 -4.624599745320128E-11 3.274983424375288E-9 -3.253396116276166E-9 3.087327654508958E-11 peri 1.209051140493988E-12 -3.673219651273632E-12 8.461032418504663E-9 -3.253396116276166E-9 5.448006849408234E-9 -2.104148087748107E-11 i -1.573266858814993E-14 4.648398061246668E-14 4.179439474856326E-11 3.087327654508958E-11 -2.104148087748107E-11 3.521887065625875E-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 16.6   n/a MPO455250   305349 (2008 BG7)          Discovered 2008-Jan-16 by Spacewatch at Kitt Peak Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 [ show close-approach data ] Alternate Designations  2008 BG7 = 2002 XA41  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 23:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin