+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08014768489257341 3.1295e-08   a 2.430366760239651 8.3909e-09 au q 2.235578490966579 7.8167e-08 au i 3.082697367020585 3.5601e-06 deg node 288.5310861111054 6.9312e-05 deg peri 126.4837176641618 7.3793e-05 deg M 346.2435851484552 2.5883e-05 deg tp 2459449.382127097371 (2021-Aug-22.88212710) 9.9591e-05 TDB period 1383.904597273446 3.79 7.167e-06 1.962e-08 d yr n .260133538619113 1.3472e-09 deg/d Q 2.625155029512723 9.0634e-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 = 1.24831 au   Jupiter MOID = 2.61446 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 14.88   n/a MPCxxxxx   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-Jul-31 13:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin