+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277225 (2005 QH165) Classification: Main-belt Asteroid          SPK-ID: 2277225 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1986855334406012 4.2513e-08   a 2.22646406018827 9.6574e-09 au q 1.784097860703437 9.6258e-08 au i 5.506162442796454 4.6481e-06 deg node 67.34274133880706 4.6979e-05 deg peri 268.4813701238702 4.8623e-05 deg M 286.3970010704073 1.4175e-05 deg tp 2459644.593262150531 (2022-Mar-06.09326215) 4.8694e-05 TDB period 1213.450208185496 3.32 7.8951e-06 2.162e-08 d yr n .2966747193840919 1.9303e-09 deg/d Q 2.668830259673104 1.1576e-08 au   Orbit Determination Parameters    # obs. used (total)      416      data-arc span      7333 days (20.08 yr)      first obs. used      2001-05-15      last obs. used      2021-06-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5576      source      ORB      producer      Otto Matic      solution date      2021-Jul-09 04:58:27   Additional Information  Earth MOID = .784273 au   Jupiter MOID = 2.71818 au   T_jup = 3.613  [ 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 17.1   n/a MPO455057   277225 (2005 QH165)          Discovered 2005-Aug-31 by NEAT at Palomar Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-28 10:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin