+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120478 (1992 QS) Classification: Main-belt Asteroid          SPK-ID: 2120478 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2290439133330792 6.7903e-08   a 2.459479640832226 1.5747e-08 au q 1.896150799132977 1.6911e-07 au i 14.90565646824394 7.2437e-06 deg node 353.0981626229836 1.2972e-05 deg peri 7.472858571733661 1.7746e-05 deg M 59.3308931884898 8.4623e-06 deg tp 2458768.310989708723 (2019-Oct-11.81098971) 3.3938e-05 TDB period 1408.845193671819 3.86 1.353e-05 3.704e-08 d yr n .2555284296791658 2.4541e-09 deg/d Q 3.022808482531476 1.9354e-08 au   Orbit Determination Parameters    # obs. used (total)      739      data-arc span      10014 days (27.42 yr)      first obs. used      1992-08-29      last obs. used      2020-01-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51762      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 06:19:51   Additional Information  Earth MOID = .893364 au   Jupiter MOID = 2.43226 au   T_jup = 3.409  [ 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 15.4   n/a MPO348203   diameter diameter 2.421 km 0.648 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.209   0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   120478 (1992 QS)          Discovered 1992-Aug-29 by Helin, E. F. at Palomar Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 [ show close-approach data ] Alternate Designations  1992 QS = 2000 RJ37  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-29 11:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin