+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 BA1) Classification: Amor [NEO]          SPK-ID: 54106336 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5266661170206203 9.6663e-06   a 2.319593570639248 5.0911e-05 au q 1.097942231724679 1.677e-06 au i 1.26283850936705 1.7839e-05 deg node 65.3019622766806 0.00014677 deg peri 111.8189993488414 0.00015199 deg M 334.1690502699768 0.00083154 deg tp 2459293.087881004214 (2021-Mar-19.58788100) 7.051e-05 TDB period 1290.375983457385 3.53 0.042482 0.0001163 d yr n .2789884534548057 9.185e-06 deg/d Q 3.541244909553817 7.7724e-05 au   Orbit Determination Parameters    # obs. used (total)      230      data-arc span      94 days      first obs. used      2021-01-16      last obs. used      2021-04-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      4      norm. resid. RMS      .46449      source      ORB      producer      Otto Matic      solution date      2021-Apr-21 06:22:40   Additional Information  Earth MOID = .103885 au   Jupiter MOID = 1.42049 au   T_jup = 3.378  [ 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 22.66   .49523 E2021D90 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-21 21:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin