+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117152 (2004 QO1) Classification: Main-belt Asteroid          SPK-ID: 2117152 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07781616629247193 4.5261e-08   a 3.158893475139478 3.0683e-08 au q 2.91308049517782 1.5233e-07 au i 24.7080094534366 7.0124e-06 deg node 47.80304381068077 1.1904e-05 deg peri 268.9982235115791 4.8052e-05 deg M 290.4196532125511 4.8819e-05 deg tp 2459396.855588693719 (2021-Jul-01.35558869) 0.00027951 TDB period 2050.694176124419 5.61 2.9878e-05 8.18e-08 d yr n .1755503108124876 2.5578e-09 deg/d Q 3.404706455101136 3.3071e-08 au   Orbit Determination Parameters    # obs. used (total)      564      data-arc span      7500 days (20.53 yr)      first obs. used      1999-10-16      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57773      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:09:10   Additional Information  Earth MOID = 2.0242 au   Jupiter MOID = 1.85184 au   T_jup = 3.059  [ 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 14.3   n/a MPO432676   diameter diameter 9.876 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.029   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   117152 (2004 QO1)          Discovered 2004-Aug-16 by Siding Spring Survey at Siding Spring Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  2004 QO1 = 2002 EY153  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-04 03:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin