+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20069 (1993 TD37) Classification: Main-belt Asteroid          SPK-ID: 2020069 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02870710505073689 3.9894e-08   a 3.195519771164174 2.3442e-08 au q 3.103785649401657 1.2864e-07 au i 8.289161228080408 4.3708e-06 deg node 162.7155812161327 2.92e-05 deg peri 214.4364702828436 8.1363e-05 deg M 289.2321334993159 7.7588e-05 deg tp 2459610.651488743687 (2022-Jan-31.15148874) 0.00045062 TDB period 2086.463012789851 5.71 2.2959e-05 6.286e-08 d yr n .1725408012474838 1.8986e-09 deg/d Q 3.28725389292669 2.4115e-08 au   Orbit Determination Parameters    # obs. used (total)      1191      data-arc span      9775 days (26.76 yr)      first obs. used      1993-10-09      last obs. used      2020-07-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52315      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:12:35   Additional Information  Earth MOID = 2.10442 au   Jupiter MOID = 1.85354 au   T_jup = 3.179  [ 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 13.84   n/a E2021B10   diameter diameter 7.569 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.123   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20069 (1993 TD37)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla Reference: 20010109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1993 TD37 = 1998 QV20  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 12:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin