+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2761 Eddington (1981 AE) Classification: Main-belt Asteroid          SPK-ID: 2002761 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1800991942754814 3.4565e-08   a 3.083824932998017 1.4457e-08 au q 2.528430547278434 1.0447e-07 au i 3.169454484260775 4.7694e-06 deg node 31.27138463754379 6.8616e-05 deg peri 100.0061809302841 6.9956e-05 deg M 106.2985218715871 1.2959e-05 deg tp 2458416.439649490113 (2018-Oct-24.93964949) 7.0081e-05 TDB period 1978.030573534823 5.42 1.391e-05 3.808e-08 d yr n .1819992091207493 1.2799e-09 deg/d Q 3.639219318717601 1.7061e-08 au   Orbit Determination Parameters    # obs. used (total)      2380      data-arc span      16654 days (45.60 yr)      first obs. used      1974-11-12      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46013      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:49:26   Additional Information  Earth MOID = 1.54544 au   Jupiter MOID = 1.42132 au   T_jup = 3.200  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.3   n/a MPO473803   diameter diameter 15.894 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.101   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2761 Eddington (1981 AE)          Discovered 1981-Jan-01 by Bowell, E. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1981 AE = 1970 AW = 1974 VZ = 1976 GU4 = 1979 TT1 = 1979 US1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-10 07:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin