+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21053 (1990 VE) Classification: Main-belt Asteroid          SPK-ID: 2021053 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1806627687983287 1.7031e-08   a 2.760992323923696 1.1104e-08 au q 2.262183806052709 4.818e-08 au i 6.926481536666855 4.0657e-07 deg node 70.39487337454167 3.8595e-06 deg peri 346.2349836945995 6.8393e-06 deg M 199.0837544670496 8.1486e-06 deg tp 2459949.520348183356 (2023-Jan-05.02034818) 4.0545e-05 TDB period 1675.699830386568 4.59 1.0109e-05 2.768e-08 d yr n .2148356128418009 1.296e-09 deg/d Q 3.259800841794683 1.311e-08 au   Orbit Determination Parameters    # obs. used (total)      2208      data-arc span      10839 days (29.68 yr)      first obs. used      1990-11-10      last obs. used      2020-07-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .477      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:37:31   Additional Information  Earth MOID = 1.2743 au   Jupiter MOID = 2.09286 au   T_jup = 3.307  [ 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 13.23   n/a E2021B10   diameter diameter 5.504 km 0.254 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.403   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21053 (1990 VE)          Discovered 1990-Nov-10 by Natori, A., Urata, T. at Yakiimo Reference: 20010208/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1990 VE = 1999 SE4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 12:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin