+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   227802 (2007 AA16) Classification: Main-belt Asteroid          SPK-ID: 2227802 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1117652537713271 4.3721e-08   a 2.289513118173253 1.2729e-08 au q 2.033625103507837 1.0299e-07 au i 3.67369593049306 5.4225e-06 deg node 33.69005936089398 8.3409e-05 deg peri 55.96124161375938 8.8473e-05 deg M 36.77436254237773 2.9057e-05 deg tp 2459071.242490517161 (2020-Aug-09.74249052) 0.00010184 TDB period 1265.357172682443 3.46 1.0552e-05 2.889e-08 d yr n .2845046503643177 2.3726e-09 deg/d Q 2.545401132838669 1.4152e-08 au   Orbit Determination Parameters    # obs. used (total)      235      data-arc span      6668 days (18.26 yr)      first obs. used      2002-10-11      last obs. used      2021-01-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61258      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 13:12:11   Additional Information  Earth MOID = 1.05242 au   Jupiter MOID = 2.61212 au   T_jup = 3.588  [ 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 17.2   n/a MPO440187   227802 (2007 AA16)          Discovered 2007-Jan-10 by CSS at Catalina Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 01:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin