+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2982 Muriel (1981 JA3) Classification: Main-belt Asteroid          SPK-ID: 2002982 [ 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 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .064167653106508 1.3366e-08   a 2.999398603775869 1.412e-08 au q 2.806934234640635 4.1496e-08 au i 10.23334172260775 8.184e-07 deg node 42.8129888964342 3.9815e-06 deg peri 40.57666284063185 2.4765e-05 deg M 2.82346350969343 2.2092e-05 deg tp 2459185.619093673350 (2020-Dec-02.11909367) 0.00011644 TDB period 1897.359841627886 5.19 1.3398e-05 3.668e-08 d yr n .1897373350598215 1.3398e-09 deg/d Q 3.191862972911104 1.5026e-08 au   Orbit Determination Parameters    # obs. used (total)      2602      data-arc span      17251 days (47.23 yr)      first obs. used      1973-12-20      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41631      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:32:01   Additional Information  Earth MOID = 1.83016 au   Jupiter MOID = 2.02633 au   T_jup = 3.226  [ 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 11.85   n/a E2021B10   diameter diameter 15.229 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.132   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   2982 Muriel (1981 JA3)          Discovered 1981-May-06 by Shoemaker, C. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1981 JA3 = 1973 YP = 1978 SY5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 00:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin