+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 DL) Classification: Amor [NEO]          SPK-ID: 54123254 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4098806796542043 0.00044398   a 1.725384458746261 0.0013401 au q 1.018182704130542 2.4777e-05 au i 5.184678709516881 0.004387 deg node 337.9653399096131 0.0014246 deg peri 189.8035562631024 0.0036577 deg M 324.4524834902633 0.040467 deg tp 2459282.239883325483 (2021-Mar-08.73988333) 0.0021767 TDB period 827.803483518003 2.27 0.96441 0.00264 d yr n .4348858239519244 0.00050665 deg/d Q 2.43258621336198 0.0018894 au   Orbit Determination Parameters    # obs. used (total)      75      data-arc span      26 days      first obs. used      2021-02-16      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      7      norm. resid. RMS      .44354      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:26:04   Additional Information  Earth MOID = .0283487 au   Jupiter MOID = 2.54369 au   T_jup = 4.062  [ 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 25.07   .35186 E2021D77 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-21 19:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin