+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120341 (2004 QX12) Classification: Main-belt Asteroid          SPK-ID: 2120341 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0636213242707715 6.25e-08   a 3.021519959703522 2.499e-08 au q 2.829286858556615 1.8291e-07 au i 10.84143335594897 6.1254e-06 deg node 39.98028368110924 2.769e-05 deg peri 175.7113418512903 4.8527e-05 deg M 148.4276638407315 4.0898e-05 deg tp 2458409.550093045585 (2018-Oct-18.05009305) 0.00021584 TDB period 1918.388790442247 5.25 2.38e-05 6.516e-08 d yr n .1876574768334676 2.3281e-09 deg/d Q 3.213753060850428 2.658e-08 au   Orbit Determination Parameters    # obs. used (total)      531      data-arc span      7290 days (19.96 yr)      first obs. used      2000-11-20      last obs. used      2020-11-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55423      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 17:06:00   Additional Information  Earth MOID = 1.82107 au   Jupiter MOID = 1.75125 au   T_jup = 3.216  [ 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 15.1   n/a MPO348203   diameter diameter 4.211 km 0.878 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.120   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   120341 (2004 QX12)          Discovered 2004-Aug-21 by Siding Spring Survey at Siding Spring Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ show close-approach data ] Alternate Designations  2004 QX12 = 2000 WX109 = 2002 CV65  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 22:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin