+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58312 (1994 PO23) Classification: Main-belt Asteroid          SPK-ID: 2058312 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1090464925847302 4.3448e-08   a 2.256264828536057 7.1417e-09 au q 2.010227062641912 9.7081e-08 au i 1.311857403221043 3.9487e-06 deg node 333.4198938046773 0.00016839 deg peri 45.23852947924637 0.00016908 deg M 184.6309772304043 1.6069e-05 deg tp 2459603.523057387733 (2022-Jan-24.02305739) 5.6368e-05 TDB period 1237.894225736778 3.39 5.8774e-06 1.609e-08 d yr n .2908164466036934 1.3808e-09 deg/d Q 2.502302594430201 7.9205e-09 au   Orbit Determination Parameters    # obs. used (total)      904      data-arc span      9435 days (25.83 yr)      first obs. used      1994-08-12      last obs. used      2020-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5323      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:51:31   Additional Information  Earth MOID = 1.01225 au   Jupiter MOID = 2.93266 au   T_jup = 3.615  [ 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 16.1   n/a MPO259710   diameter diameter 2.614 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.124   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58312 (1994 PO23)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1994 PO23 = 2000 JK22  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 11:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin