+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1792393725687943 3.4014e-08   a 3.087736607563699 1.414e-08 au q 2.534292635366284 1.0213e-07 au i 3.16698709103336 4.6355e-06 deg node 31.18876267661659 6.7704e-05 deg peri 100.4419192026129 6.9002e-05 deg M 142.2903055113092 1.2912e-05 deg tp 2458417.193720692979 (2018-Oct-25.69372069) 6.9279e-05 TDB period 1981.795313020219 5.43 1.3613e-05 3.727e-08 d yr n .1816534723010152 1.2478e-09 deg/d Q 3.641180579761114 1.6675e-08 au   Orbit Determination Parameters    # obs. used (total)      2501      data-arc span      16754 days (45.87 yr)      first obs. used      1974-11-12      last obs. used      2020-09-25      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45402      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:12:49   Additional Information  Earth MOID = 1.55115 au   Jupiter MOID = 1.4175 au   T_jup = 3.199  [ 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 12.31   n/a E2021B10   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 ] 2021-Apr-16 04:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin