+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305573 (2008 XJ3) Classification: Main-belt Asteroid          SPK-ID: 2305573 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04603424525918965 6.2453e-08   a 2.618593375335664 2.8747e-08 au q 2.498048405661373 1.5929e-07 au i 26.70674208494275 5.3247e-06 deg node 247.1775397664257 1.3743e-05 deg peri 298.6590757576062 6.8297e-05 deg M 199.1703810535619 7.1973e-05 deg tp 2459891.955214816966 (2022-Nov-08.45521482) 0.00031333 TDB period 1547.748971643141 4.24 2.5487e-05 6.978e-08 d yr n .2325958579819389 3.8301e-09 deg/d Q 2.739138345009956 3.007e-08 au   Orbit Determination Parameters    # obs. used (total)      313      data-arc span      6724 days (18.41 yr)      first obs. used      2002-06-10      last obs. used      2020-11-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50494      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:08:55   Additional Information  Earth MOID = 1.53147 au   Jupiter MOID = 2.35591 au   T_jup = 3.253  [ 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 16.0   n/a MPO494622   diameter diameter 3.648 km 0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.041   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   305573 (2008 XJ3)          Discovered 2008-Dec-06 by BATTeRS at Bisei SG Center Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2193-Jan-20 15:52 00:14 Thisb 0.0364546630716695 0.0363293561802073 0.0365808457981805 8.19607295627881 8.1960729334588 2522057.161258445 13.8354313209327 10894.9382135518 94.9883914263568 -54.8707198338927 46948.8242650328 T 11 CATAB v2.0f-lin.ifort 2020-Dec-18 06:08:56 2020-Dec-18 06:08 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 08:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin