+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70381 (1999 RZ213) Classification: Main-belt Asteroid          SPK-ID: 2070381 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1579363801688749 3.2897e-08   a 2.346299828731087 7.6012e-09 au q 1.975733726990448 7.8725e-08 au i 3.431101508134994 3.7579e-06 deg node 154.8958938973387 6.4942e-05 deg peri 95.40074888551767 6.6372e-05 deg M 335.4966918029934 1.2748e-05 deg tp 2459089.850278800739 (2020-Aug-28.35027880) 4.6484e-05 TDB period 1312.724800653463 3.59 6.3792e-06 1.747e-08 d yr n .2742387435818954 1.3327e-09 deg/d Q 2.716865930471727 8.8017e-09 au   Orbit Determination Parameters    # obs. used (total)      873      data-arc span      10713 days (29.33 yr)      first obs. used      1991-02-19      last obs. used      2020-06-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5586      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 23:35:09   Additional Information  Earth MOID = .965249 au   Jupiter MOID = 2.31873 au   T_jup = 3.541  [ 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 15.9   n/a MPO426421   diameter diameter 3.313 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.084   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70381 (1999 RZ213)          Discovered 1999-Sep-13 by Spacewatch at Kitt Peak Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 RZ213 = 1999 TP306 = 2002 ES86  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-30 00:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin