+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120391 (2005 QU80) Classification: Main-belt Asteroid          SPK-ID: 2120391 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2268035435118223 7.5224e-08   a 3.147478585418165 3.6791e-08 au q 2.433619289117747 2.4462e-07 au i 13.19879009920602 9.289e-06 deg node 27.89346399653974 2.3348e-05 deg peri 332.5679314955262 2.7694e-05 deg M 254.789921022175 2.1019e-05 deg tp 2459796.570252790952 (2022-Aug-05.07025279) 0.00012737 TDB period 2039.588726570301 5.58 3.5761e-05 9.791e-08 d yr n .176506172695592 3.0948e-09 deg/d Q 3.861337881718583 4.5135e-08 au   Orbit Determination Parameters    # obs. used (total)      332      data-arc span      21766 days (59.59 yr)      first obs. used      1960-10-22      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57293      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 17:57:31   Additional Information  Earth MOID = 1.43849 au   Jupiter MOID = 1.63132 au   T_jup = 3.128  [ 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 15.15   n/a E2021B55   diameter diameter 5.916 km 0.613 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.050   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120391 (2005 QU80)          Discovered 2005-Aug-28 by LONEOS at Anderson Mesa Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ show close-approach data ] Alternate Designations  2005 QU80 = 5586 P-L  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 21:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin