+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 AD7) Classification: Amor [NEO]          SPK-ID: 54106000 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5283931196482697 8.6637e-06   a 2.737676478400566 6.1921e-05 au q 1.291107063390802 5.6013e-06 au i 6.635371410550943 0.00010371 deg node 296.2549883541884 0.00030564 deg peri 260.3134250759607 0.00053292 deg M 334.3319845329036 0.00089185 deg tp 2459318.467236384358 (2021-Apr-13.96723638) 0.00019804 TDB period 1654.51844739646 4.53 0.056133 0.0001537 d yr n .217585969238659 7.3821e-06 deg/d Q 4.18424589341033 9.464e-05 au   Orbit Determination Parameters    # obs. used (total)      226      data-arc span      102 days      first obs. used      2021-01-08      last obs. used      2021-04-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      4      norm. resid. RMS      .47072      source      ORB      producer      Otto Matic      solution date      2021-Apr-21 06:22:40   Additional Information  Earth MOID = .317136 au   Jupiter MOID = .989306 au   T_jup = 3.124  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 19.47   .24027 E2021-DA1 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-22 12:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin