+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249052 (2007 TN129) Classification: Main-belt Asteroid          SPK-ID: 2249052 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1378088053814357 8.8044e-08   a 3.040546847562861 4.0384e-08 au q 2.621532718793933 2.6702e-07 au i 9.102330572565538 1.1179e-05 deg node 37.79546805183693 3.995e-05 deg peri 14.95727371368657 5.1805e-05 deg M 128.9249969160048 3.5522e-05 deg tp 2458306.977421482468 (2018-Jul-07.47742148) 0.00018339 TDB period 1936.537787384795 5.30 3.8581e-05 1.056e-07 d yr n .1858987737523901 3.7036e-09 deg/d Q 3.459560976331789 4.5949e-08 au   Orbit Determination Parameters    # obs. used (total)      311      data-arc span      5903 days (16.16 yr)      first obs. used      2004-03-18      last obs. used      2020-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55352      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:20:41   Additional Information  Earth MOID = 1.63343 au   Jupiter MOID = 1.94321 au   T_jup = 3.207  [ 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 15.6   n/a MPO418329   diameter diameter 6.783 km 0.577 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.024   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   249052 (2007 TN129)          Discovered 2007-Oct-06 by Spacewatch at Kitt Peak Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ show close-approach data ] Alternate Designations  2007 TN129 = 2004 FO159  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-03 23:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin