+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   152316 (2005 TF172) Classification: Main-belt Asteroid          SPK-ID: 2152316 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1249454531401085 6.0875e-08   a 2.473359432194507 1.8967e-08 au q 2.164324417160603 1.537e-07 au i 13.89042609580001 6.363e-06 deg node 274.1518748475472 2.5285e-05 deg peri 26.57488962201326 3.5503e-05 deg M 30.0643314667905 2.8391e-05 deg tp 2459081.847108283343 (2020-Aug-20.34710828) 0.00011157 TDB period 1420.787988090815 3.89 1.6343e-05 4.474e-08 d yr n .2533805205404011 2.9146e-09 deg/d Q 2.782394447228411 2.1337e-08 au   Orbit Determination Parameters    # obs. used (total)      296      data-arc span      6896 days (18.88 yr)      first obs. used      2001-08-26      last obs. used      2020-07-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .60084      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 19:26:37   Additional Information  Earth MOID = 1.15413 au   Jupiter MOID = 2.40945 au   T_jup = 3.432  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.84   n/a E2021B55   152316 (2005 TF172)          Discovered 2005-Oct-11 by LONEOS at Anderson Mesa Reference: 20070303/Numbers.arc Last Updated: 2007-03-07 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 06:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin