+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118761 (2000 QB220) Classification: Main-belt Asteroid          SPK-ID: 2118761 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .235285179991394 4.4666e-08   a 2.722111863759681 1.4824e-08 au q 2.081639283938275 1.2379e-07 au i 2.699986601520321 5.5073e-06 deg node 286.9175301707141 0.00010614 deg peri 95.47447459469643 0.00010703 deg M 107.1591899131906 1.2274e-05 deg tp 2458512.202725246464 (2019-Jan-28.70272525) 5.4334e-05 TDB period 1640.428777538144 4.49 1.34e-05 3.669e-08 d yr n .2194548187213992 1.7927e-09 deg/d Q 3.362584443581086 1.8312e-08 au   Orbit Determination Parameters    # obs. used (total)      554      data-arc span      15070 days (41.26 yr)      first obs. used      1978-11-01      last obs. used      2020-02-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57438      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 06:01:42   Additional Information  Earth MOID = 1.08699 au   Jupiter MOID = 2.11517 au   T_jup = 3.316  [ 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 16.0   n/a MPO459560   diameter diameter 3.763 km 0.774 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   geometric albedo albedo 0.054   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   118761 (2000 QB220)          Discovered 2000-Aug-21 by LONEOS at Anderson Mesa Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ show close-approach data ] Alternate Designations  2000 QB220 = 1978 VE1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-30 17:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin