+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160261 (2002 RZ5) Classification: Main-belt Asteroid          SPK-ID: 2160261 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .105554189393743 5.4023e-08   a 3.049077927040275 2.6996e-08 au q 2.727234978053185 1.6454e-07 au i 10.00463654056817 5.9648e-06 deg node 166.5380155296037 3.0814e-05 deg peri 215.492997037909 3.9236e-05 deg M 79.95482628037044 2.4248e-05 deg tp 2458568.589863974928 (2019-Mar-26.08986398) 0.00013062 TDB period 1944.693725226682 5.32 2.5827e-05 7.071e-08 d yr n .1851191245850484 2.4585e-09 deg/d Q 3.370920876027366 2.9846e-08 au   Orbit Determination Parameters    # obs. used (total)      466      data-arc span      6768 days (18.53 yr)      first obs. used      2001-07-14      last obs. used      2020-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61387      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 13:17:08   Additional Information  Earth MOID = 1.73588 au   Jupiter MOID = 2.10982 au   T_jup = 3.206  [ 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 15.1   n/a MPO454060   diameter diameter 4.358 km 0.999 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.093   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   160261 (2002 RZ5)          Discovered 2002-Sep-01 by NEAT at Haleakala Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-05 17:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin