+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160172 (2001 VP78) Classification: Main-belt Asteroid          SPK-ID: 2160172 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2085195377537243 5.0458e-08   a 2.210691078009148 1.495e-08 au q 1.749718796306398 1.1853e-07 au i 22.23124799335958 5.1745e-06 deg node 105.0705543521525 1.29e-05 deg peri 261.8504569145865 1.7518e-05 deg M 333.8033032548544 1.4257e-05 deg tp 2459287.864409644553 (2021-Mar-14.36440964) 4.8066e-05 TDB period 1200.578369785005 3.29 1.2179e-05 3.334e-08 d yr n .2998554772100946 3.0417e-09 deg/d Q 2.671663359711898 1.8068e-08 au   Orbit Determination Parameters    # obs. used (total)      574      data-arc span      7381 days (20.21 yr)      first obs. used      2000-06-03      last obs. used      2020-08-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54994      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:30:12   Additional Information  Earth MOID = .878231 au   Jupiter MOID = 2.96386 au   T_jup = 3.534  [ 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 15.82   n/a E2021B55   160172 (2001 VP78)          Discovered 2001-Nov-15 by LINEAR at Socorro Reference: 20070730/Numbers.arc Last Updated: 2007-08-06 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-13 07:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin