+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   392957 (2012 WF27) Classification: Main-belt Asteroid          SPK-ID: 2392957 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05311295432837293 7.1934e-08   a 2.631849895854846 4.0295e-08 au q 2.492064572537174 2.0495e-07 au i 22.75763746962414 9.0514e-06 deg node 65.1777511001911 2.465e-05 deg peri 14.49697320068965 0.00010452 deg M 264.4648144742969 9.9575e-05 deg tp 2459414.357616066438 (2021-Jul-18.85761607) 0.00043042 TDB period 1559.516956648746 4.27 3.5816e-05 9.806e-08 d yr n .2308407090190323 5.3015e-09 deg/d Q 2.771635219172517 4.2435e-08 au   Orbit Determination Parameters    # obs. used (total)      134      data-arc span      5293 days (14.49 yr)      first obs. used      2006-05-08      last obs. used      2020-11-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52761      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:51:53   Additional Information  Earth MOID = 1.50908 au   Jupiter MOID = 2.51051 au   T_jup = 3.287  [ hide covariance matrix ] Orbital Elements at Epoch 2457484.5 (2016-Apr-06.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05345012347488108 7.2901e-08   q 2.491850620363762 2.0721e-07 au tp 2457844.428340099558 (2017-Mar-31.92834010) 0.00042966 TDB node 65.20956093939282 2.4634e-05 deg peri 12.27851390400513 0.00010342 deg i 22.76675632271471 9.062e-06 deg   Orbit Determination Parameters    # obs. used (total)      134      data-arc span      5293 days (14.49 yr)      first obs. used      2006-05-08      last obs. used      2020-11-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52761      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:51:53   Additional Information  Jupiter MOID = 2.51051 au   T_jup = 3.287  Orbit Covariance (6×6)   e q tp node peri i e 5.314625435840912E-15 -1.487796871850308E-14 -8.661599329553554E-12 -3.295987871202979E-14 -1.997197171965811E-12 4.892777672774062E-15 q -1.487796871850308E-14 4.293763182388092E-14 2.025918660976865E-11 9.281097060445821E-14 4.583582739659143E-12 -2.214090520502261E-15 tp -8.661599329553554E-12 2.025918660976865E-11 1.846108850867927E-7 1.485799187832876E-10 4.326561378972131E-8 -1.901991205373365E-10 node -3.295987871202979E-14 9.281097060445821E-14 1.485799187832876E-10 6.06813360670985E-10 -5.251248442028772E-10 -9.572227065013016E-11 peri -1.997197171965811E-12 4.583582739659143E-12 4.326561378972131E-8 -5.251248442028772E-10 1.06959257361129E-8 4.308619194556665E-11 i 4.892777672774062E-15 -2.214090520502261E-15 -1.901991205373365E-10 -9.572227065013016E-11 4.308619194556665E-11 8.211914957239906E-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 16.3   n/a MPO247266   392957 (2012 WF27)          Discovered 2006-May-08 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2014-04-17 Alternate Designations  2012 WF27 = 2006 JR54  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-18 09:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin