+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   442175 (2010 WR74) Classification: Main-belt Asteroid          SPK-ID: 2442175 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1057617552252675 9.2696e-08   a 3.069295841781733 5.0569e-08 au q 2.744681726249282 3.1514e-07 au i 11.48045908784654 6.6807e-06 deg node 120.4983651679643 2.7003e-05 deg peri 236.2324074851315 4.0069e-05 deg M 319.3704045715778 2.6584e-05 deg tp 2459222.164706650377 (2021-Jan-07.66470665) 0.00014377 TDB period 1964.068151619161 5.38 4.854e-05 1.329e-07 d yr n .1832930286574929 4.5299e-09 deg/d Q 3.393909957314184 5.5918e-08 au   Orbit Determination Parameters    # obs. used (total)      188      data-arc span      6379 days (17.46 yr)      first obs. used      2003-05-02      last obs. used      2020-10-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60222      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 08:48:33   Additional Information  Earth MOID = 1.75833 au   Jupiter MOID = 2.0409 au   T_jup = 3.192  [ hide covariance matrix ] Orbital Elements at Epoch 2458199.5 (2018-Mar-22.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1085207731291799 9.2714e-08   q 2.732494066829317 3.1556e-07 au tp 2457263.531100413368 (2015-Aug-29.03110041) 0.00015666 TDB node 120.6087853411667 2.7096e-05 deg peri 236.8494267655738 3.9534e-05 deg i 11.46538926098525 6.6716e-06 deg   Orbit Determination Parameters    # obs. used (total)      188      data-arc span      6379 days (17.46 yr)      first obs. used      2003-05-02      last obs. used      2020-10-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60222      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 08:48:33   Additional Information  Jupiter MOID = 2.0409 au   T_jup = 3.192  Orbit Covariance (6×6)   e q tp node peri i e 8.59585214548131E-15 -2.908243514005313E-14 3.257245253165541E-12 7.262713751942719E-14 6.523444646511527E-13 -4.801293781619234E-15 q -2.908243514005313E-14 9.957516213656905E-14 -1.348218509356814E-11 -2.483105689195132E-13 -2.554603857076082E-12 1.744293781930016E-14 tp 3.257245253165541E-12 -1.348218509356814E-11 2.454296849567263E-8 6.172538673300587E-11 4.513256802986897E-9 1.502892002987567E-11 node 7.262713751942719E-14 -2.483105689195132E-13 6.172538673300587E-11 7.341903988971727E-10 -7.06668818916401E-10 4.497094143647196E-11 peri 6.523444646511527E-13 -2.554603857076082E-12 4.513256802986897E-9 -7.06668818916401E-10 1.562932898661497E-9 -4.112053620108604E-11 i -4.801293781619234E-15 1.744293781930016E-14 1.502892002987567E-11 4.497094143647196E-11 -4.112053620108604E-11 4.451012698114339E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.7   n/a MPO437719   442175 (2010 WR74)          Discovered 2003-May-02 by Spacewatch at Kitt Peak Reference: Last Updated: 2015-09-02 Alternate Designations  2010 WR74 = 2012 BJ138  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 11:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin