+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19273 (1995 XJ) Classification: Main-belt Asteroid          SPK-ID: 2019273 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1379703755919679 3.4303e-08   a 2.80204569543554 1.2162e-08 au q 2.415446398410442 9.72e-08 au i 10.40141721981812 3.6094e-06 deg node 81.43728518901628 2.2932e-05 deg peri 345.8681894494021 2.7137e-05 deg M 171.4800542228149 1.5679e-05 deg tp 2458580.439497511125 (2019-Apr-06.93949751) 7.2174e-05 TDB period 1713.212549573058 4.69 1.1154e-05 3.054e-08 d yr n .2101315450261639 1.3681e-09 deg/d Q 3.188644992460639 1.384e-08 au   Orbit Determination Parameters    # obs. used (total)      1610      data-arc span      11171 days (30.58 yr)      first obs. used      1990-11-11      last obs. used      2021-06-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48871      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 04:47:00   Additional Information  Earth MOID = 1.43091 au   Jupiter MOID = 2.10458 au   T_jup = 3.287  [ 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 14.24   n/a MPO614063   diameter diameter 3.890 km 0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.293   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19273 (1995 XJ)          Discovered 1995-Dec-10 by Klet at Klet Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-24 15:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin