+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   312933 (2011 WD80) Classification: Main-belt Asteroid          SPK-ID: 2312933 [ 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 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07944248330466185 7.5658e-08   a 2.769904651814213 2.3428e-08 au q 2.549856547756957 2.162e-07 au i 1.793304594399834 5.5194e-06 deg node 99.17381411010767 0.00025014 deg peri 290.257479960082 0.00025429 deg M 331.4991779863768 4.025e-05 deg tp 2459133.806259203975 (2020-Oct-11.30625920) 0.00018753 TDB period 1683.819971595633 4.61 2.1363e-05 5.849e-08 d yr n .2137995783829873 2.7125e-09 deg/d Q 2.989952755871469 2.5289e-08 au   Orbit Determination Parameters    # obs. used (total)      176      data-arc span      9802 days (26.84 yr)      first obs. used      1994-01-04      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65759      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:11:11   Additional Information  Earth MOID = 1.55545 au   Jupiter MOID = 2.36632 au   T_jup = 3.332  [ hide covariance matrix ] Orbital Elements at Epoch 2457483.5 (2016-Apr-05.0) TDB Reference: JPL 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08172118592736555 7.5795e-08   q 2.544001580932644 2.1689e-07 au tp 2457441.474736540960 (2016-Feb-22.97473654) 0.00019031 TDB node 99.1993857455485 0.00025052 deg peri 288.7378389651581 0.0002544 deg i 1.792720610616593 5.5187e-06 deg   Orbit Determination Parameters    # obs. used (total)      176      data-arc span      9802 days (26.84 yr)      first obs. used      1994-01-04      last obs. used      2020-11-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65759      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 06:11:11   Additional Information  Jupiter MOID = 2.36632 au   T_jup = 3.332  Orbit Covariance (6×6)   e q tp node peri i e 5.744865913242342E-15 -1.63649275402465E-14 4.150009592691935E-12 -1.13121671934143E-14 9.87704485545529E-13 -4.518507893826082E-15 q -1.63649275402465E-14 4.704018751975117E-14 -1.35589461865443E-11 3.624270342069224E-14 -3.215732803863097E-12 1.292794761607647E-14 tp 4.150009592691935E-12 -1.35589461865443E-11 3.621877010618244E-8 -7.504147889384022E-11 8.517236917836961E-9 -2.868814005949028E-12 node -1.13121671934143E-14 3.624270342069224E-14 -7.504147889384022E-11 6.275927432865286E-8 -6.274581094296893E-8 -5.496213271967254E-10 peri 9.87704485545529E-13 -3.215732803863097E-12 8.517236917836961E-9 -6.274581094296893E-8 6.47179185504706E-8 5.486876879223939E-10 i -4.518507893826082E-15 1.292794761607647E-14 -2.868814005949028E-12 -5.496213271967254E-10 5.486876879223939E-10 3.045629846076887E-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 16.9   n/a MPO440463   312933 (2011 WD80)          Discovered 1999-Feb-07 by Spacewatch at Kitt Peak Reference: 20120109/Numbers.arc Last Updated: 2012-01-11 Alternate Designations  2011 WD80 = 1999 CK140  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-20 11:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin