+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78688 (2002 TJ147) Classification: Main-belt Asteroid          SPK-ID: 2078688 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03656758049898477 6.3663e-08   a 3.084035418059198 2.691e-08 au q 2.971259704647598 1.9989e-07 au i 9.129251679218196 5.0958e-06 deg node 299.8564512453175 3.5426e-05 deg peri 235.0223990623758 7.748e-05 deg M 277.7571613101654 7.0309e-05 deg tp 2459452.431958396497 (2021-Aug-25.93195840) 0.00038822 TDB period 1978.233091349369 5.42 2.5892e-05 7.089e-08 d yr n .1819805773011517 2.3818e-09 deg/d Q 3.196811131470798 2.7894e-08 au   Orbit Determination Parameters    # obs. used (total)      776      data-arc span      8008 days (21.92 yr)      first obs. used      1998-12-14      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51602      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:06:51   Additional Information  Earth MOID = 1.98911 au   Jupiter MOID = 1.86346 au   T_jup = 3.206  [ 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 14.5   n/a MPO366148   diameter diameter 7.113 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.096   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   78688 (2002 TJ147)          Discovered 2002-Oct-04 by LONEOS at Anderson Mesa Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2002 TJ147 = 1998 XQ52  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 16:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin