+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266612 (2008 OQ9) Classification: Outer Main-belt Asteroid          SPK-ID: 2266612 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1974764362805672 9.7985e-08   a 3.219909404483531 6.3388e-08 au q 2.58405317013984 3.1414e-07 au i 1.552004091807191 9.4287e-06 deg node 168.0600709022034 0.00021525 deg peri 183.4283771323513 0.00021635 deg M 354.5357136960135 2.0224e-05 deg tp 2459032.532796243876 (2020-Jul-02.03279624) 0.00011908 TDB period 2110.395760079823 5.78 6.2319e-05 1.706e-07 d yr n .1705841183012912 5.0373e-09 deg/d Q 3.855765638827223 7.5906e-08 au   Orbit Determination Parameters    # obs. used (total)      176      data-arc span      5289 days (14.48 yr)      first obs. used      2003-10-20      last obs. used      2018-04-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53086      source      ORB      producer      Otto Matic      solution date      2018-Oct-04 10:15:00   Additional Information  Earth MOID = 1.57845 au   Jupiter MOID = 1.58344 au   T_jup = 3.158  [ 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 15.8   n/a MPO446349   diameter diameter 3.997 km 0.790 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   266612 (2008 OQ9)          Discovered 2008-Jul-29 by La Sagra at La Sagra Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ show close-approach data ] Alternate Designations  2008 OQ9 = 2005 BZ45 = 2009 WU33  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-05 11:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin