+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1582180031283549 3.2888e-08   a 2.347024871193328 7.5879e-09 au q 1.975683282780535 7.8729e-08 au i 3.431348821586179 3.7555e-06 deg node 154.887334613754 6.4918e-05 deg peri 95.41588407910876 6.6344e-05 deg M 30.32414381454728 1.2724e-05 deg tp 2459089.873031545086 (2020-Aug-28.37303154) 4.6419e-05 TDB period 1313.333325660583 3.60 6.3689e-06 1.744e-08 d yr n .2741116767283177 1.3293e-09 deg/d Q 2.718366459606121 8.7884e-09 au   Orbit Determination Parameters    # obs. used (total)      879      data-arc span      10714 days (29.33 yr)      first obs. used      1991-02-19      last obs. used      2020-06-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55885      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:26:12   Additional Information  Earth MOID = .963634 au   Jupiter MOID = 2.31623 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 16.02   n/a E2021B10   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 ] 2021-Mar-05 12:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin