+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   78699 (2002 TN172) Classification: Main-belt Asteroid          SPK-ID: 2078699 [ 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 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2786549710717114 3.7122e-08   a 3.157867600024026 2.4802e-08 au q 2.277912095291037 1.2484e-07 au i 25.17103464355408 5.772e-06 deg node 205.7067025839667 9.1114e-06 deg peri 249.9558633573761 1.3369e-05 deg M 334.4611751098045 1.0724e-05 deg tp 2459145.907802956777 (2020-Oct-23.40780296) 6.2146e-05 TDB period 2049.695289016057 5.61 2.4147e-05 6.611e-08 d yr n .175635862525115 2.0692e-09 deg/d Q 4.037823104757017 3.1713e-08 au   Orbit Determination Parameters    # obs. used (total)      1005      data-arc span      8410 days (23.03 yr)      first obs. used      1997-10-29      last obs. used      2020-11-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51175      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:12:57   Additional Information  Earth MOID = 1.41352 au   Jupiter MOID = 1.9075 au   T_jup = 3.002  [ 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 14.0   n/a MPO412655   diameter diameter 10.127 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   78699 (2002 TN172)          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 TN172 = 1999 GN63  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 15:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin