+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305777 (2009 DO47) Classification: Main-belt Asteroid          SPK-ID: 2305777 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .213262469855425 4.9045e-08   a 2.354031998360399 1.8333e-08 au q 1.852005320271359 1.152e-07 au i 9.44769914408332 7.4239e-06 deg node 343.6230101620026 3.1213e-05 deg peri 96.88024893944616 3.5117e-05 deg M 97.73681903198271 1.7244e-05 deg tp 2458642.343638648463 (2019-Jun-07.84363865) 6.1398e-05 TDB period 1319.219219159988 3.61 1.5411e-05 4.219e-08 d yr n .2728886865590313 3.1878e-09 deg/d Q 2.85605867644944 2.2243e-08 au   Orbit Determination Parameters    # obs. used (total)      209      data-arc span      8149 days (22.31 yr)      first obs. used      1998-01-24      last obs. used      2020-05-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60671      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 19:10:46   Additional Information  Earth MOID = .895476 au   Jupiter MOID = 2.44666 au   T_jup = 3.507  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.36   n/a E2021B25   305777 (2009 DO47)          Discovered 2009-Jan-29 by Mt. Lemmon Survey at Mount Lemmon Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-25 03:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin