+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   109581 (2001 QO274) Classification: Outer Main-belt Asteroid          SPK-ID: 2109581 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09157931581000466 6.111e-08   a 3.345566088011439 2.781e-08 au q 3.039181434674197 2.0875e-07 au i 12.04044573172308 6.0494e-06 deg node 356.7744488246349 2.1367e-05 deg peri 30.51944115953474 4.0227e-05 deg M 330.3940086418711 3.0273e-05 deg tp 2459184.314579094793 (2020-Nov-30.81457909) 0.00018749 TDB period 2235.13030432458 6.12 2.7869e-05 7.63e-08 d yr n .1610644351711683 2.0083e-09 deg/d Q 3.65195074134868 3.0357e-08 au   Orbit Determination Parameters    # obs. used (total)      843      data-arc span      7053 days (19.31 yr)      first obs. used      2001-07-26      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54667      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:36:48   Additional Information  Earth MOID = 2.04892 au   Jupiter MOID = 1.85001 au   T_jup = 3.117  [ 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 14.1   n/a MPO474963   diameter diameter 8.549 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.073   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   109581 (2001 QO274)          Discovered 2001-Aug-19 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2001 QO274 = 2002 TQ294  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 16:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin