+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14805 (1981 ED15) Classification: Main-belt Asteroid          SPK-ID: 2014805 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08026275660105782 3.1325e-08   a 2.430985909711885 8.5037e-09 au q 2.235868279340079 7.8223e-08 au i 3.082782296786141 3.5602e-06 deg node 288.5360658997869 6.93e-05 deg peri 126.309500682961 7.3759e-05 deg M 295.4267009750508 2.5724e-05 deg tp 2459448.826211802105 (2021-Aug-22.32621180) 9.936e-05 TDB period 1384.433467062252 3.79 7.2642e-06 1.989e-08 d yr n .2600341645625736 1.3644e-09 deg/d Q 2.626103540083691 9.1862e-09 au   Orbit Determination Parameters    # obs. used (total)      1459      data-arc span      25975 days (71.12 yr)      first obs. used      1949-11-25      last obs. used      2021-01-06      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49569      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:39:49   Additional Information  Earth MOID = 1.24823 au   Jupiter MOID = 2.61441 au   T_jup = 3.501  [ 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 14.87   n/a E2020-QM5   rotation period rot_per 2.053 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] 14805 (1981 ED15)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring Reference: 20000523/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 12:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin