+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103073 (1999 XO151) Classification: Main-belt Asteroid          SPK-ID: 2103073 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1556973102867216 6.9075e-08   a 2.631014413445265 1.625e-08 au q 2.221372545946241 1.8932e-07 au i 2.952466138971817 4.3836e-06 deg node 305.5214701460793 0.00010262 deg peri 220.2210690004175 0.00010373 deg M 285.5970597718953 2.0748e-05 deg tp 2459522.659442611099 (2021-Nov-04.15944261) 9.1641e-05 TDB period 1558.774411124507 4.27 1.4442e-05 3.954e-08 d yr n .2309506734462585 2.1397e-09 deg/d Q 3.040656280944289 1.8781e-08 au   Orbit Determination Parameters    # obs. used (total)      407      data-arc span      9577 days (26.22 yr)      first obs. used      1994-10-28      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5527      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:44:58   Additional Information  Earth MOID = 1.22942 au   Jupiter MOID = 1.94472 au   T_jup = 3.381  [ hide covariance matrix ] Orbital Elements at Epoch 2457406.5 (2016-Jan-19.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1549931460701764 6.9376e-08   q 2.223552510504354 1.901e-07 au tp 2457965.803805947766 (2017-Jul-31.30380595) 8.3907e-05 TDB node 305.6188535354233 0.0001027 deg peri 220.5093132469401 0.00010381 deg i 2.950791513046238 4.3831e-06 deg   Orbit Determination Parameters    # obs. used (total)      407      data-arc span      9577 days (26.22 yr)      first obs. used      1994-10-28      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5527      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:44:58   Additional Information  Jupiter MOID = 1.94472 au   T_jup = 3.381  Orbit Covariance (6×6)   e q tp node peri i e 4.813029525062431E-15 -1.316356330176965E-14 -2.311172974539547E-12 -5.016798152037574E-14 -1.519425583777213E-13 8.555261908852744E-16 q -1.316356330176965E-14 3.613956967111527E-14 6.651714592499787E-12 1.429544328491276E-13 4.647464086249488E-13 -2.061906584175983E-15 tp -2.311172974539547E-12 6.651714592499787E-12 7.040386023506559E-9 5.533315781548242E-11 1.269296488244719E-9 1.871359023786491E-12 node -5.016798152037574E-14 1.429544328491276E-13 5.533315781548242E-11 1.054689657179892E-8 -1.052412728636796E-8 7.755220777047986E-11 peri -1.519425583777213E-13 4.647464086249488E-13 1.269296488244719E-9 -1.052412728636796E-8 1.077678651950674E-8 -7.704992564872447E-11 i 8.555261908852744E-16 -2.061906584175983E-15 1.871359023786491E-12 7.755220777047986E-11 -7.704992564872447E-11 1.921140222227296E-11 [ 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 16.0   n/a MPO493579   103073 (1999 XO151)          Discovered 1999-Dec-07 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-14 21:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin