+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173102 (2007 TJ379) Classification: Main-belt Asteroid          SPK-ID: 2173102 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06620892701871552 7.8409e-08   a 2.950106669151683 2.2927e-08 au q 2.754783271996394 2.3288e-07 au i 13.84027258777438 8.9562e-06 deg node 23.15635397078949 1.5234e-05 deg peri 154.014755109413 4.5031e-05 deg M 25.30721790426382 3.9586e-05 deg tp 2458870.394124437538 (2020-Jan-21.89412444) 0.00020375 TDB period 1850.78088708419 5.07 2.1576e-05 5.907e-08 d yr n .1945124906531542 2.2675e-09 deg/d Q 3.145430066306973 2.4445e-08 au   Orbit Determination Parameters    # obs. used (total)      461      data-arc span      8235 days (22.55 yr)      first obs. used      1997-10-09      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54526      source      ORB      producer      Otto Matic      solution date      2020-May-21 03:24:03   Additional Information  Earth MOID = 1.76208 au   Jupiter MOID = 1.81905 au   T_jup = 3.223  [ 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 15.3   n/a MPO469855   diameter diameter 2.887 km 0.540 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.176   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   173102 (2007 TJ379)          Discovered 2007-Oct-13 by CSS at Catalina Reference: 20071224/Numbers.arc Last Updated: 2007-12-22 [ show close-approach data ] Alternate Designations  2007 TJ379 = 2002 TK244 = 2005 JS181  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-04 18:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin