+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305591 (2008 YA88) Classification: Main-belt Asteroid          SPK-ID: 2305591 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .1380373488550539 4.8087e-08   a 2.212344368289835 1.5997e-08 au q 1.906958216936697 1.0312e-07 au i 7.568326767867729 5.5638e-06 deg node 107.611024746773 4.6622e-05 deg peri 309.4734773109757 5.5405e-05 deg M 203.9772294159226 3.0395e-05 deg tp 2459521.410372698725 (2021-Nov-02.91037270) 0.00010461 TDB period 1201.925420690349 3.29 1.3036e-05 3.569e-08 d yr n .2995194159328348 3.2486e-09 deg/d Q 2.517730519642973 1.8205e-08 au   Orbit Determination Parameters    # obs. used (total)      198      data-arc span      6378 days (17.46 yr)      first obs. used      2001-10-15      last obs. used      2019-04-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57039      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 17:56:11   Additional Information  Earth MOID = .929702 au   Jupiter MOID = 2.78782 au   T_jup = 3.632  [ hide covariance matrix ] Orbital Elements at Epoch 2457013.5 (2014-Dec-22.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1376254252777519 4.7899e-08   q 1.907599640714636 1.0245e-07 au tp 2457118.377985109103 (2015-Apr-05.87798511) 9.3013e-05 TDB node 107.6597896917857 4.6612e-05 deg peri 309.5398297146789 5.5468e-05 deg i 7.569239483557093 5.5653e-06 deg   Orbit Determination Parameters    # obs. used (total)      198      data-arc span      6378 days (17.46 yr)      first obs. used      2001-10-15      last obs. used      2019-04-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57039      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 17:56:11   Additional Information  Jupiter MOID = 2.78782 au   T_jup = 3.632  Orbit Covariance (6×6)   e q tp node peri i e 2.294338485189512E-15 -4.866404859807859E-15 -7.733961761634617E-13 -3.630320318941107E-14 -2.863799678724002E-13 -5.414275422086592E-15 q -4.866404859807859E-15 1.049577443970466E-14 2.151934428038181E-12 7.38217302751018E-14 7.654535463431482E-13 1.206997149242897E-14 tp -7.733961761634617E-13 2.151934428038181E-12 8.65147964803484E-9 -1.171702907541908E-11 2.832527146859377E-9 7.635810537338764E-12 node -3.630320318941107E-14 7.38217302751018E-14 -1.171702907541908E-11 2.172647516080012E-9 -2.155167772186743E-9 7.980519879011853E-11 peri -2.863799678724002E-13 7.654535463431482E-13 2.832527146859377E-9 -2.155167772186743E-9 3.076722247121273E-9 -7.641489166632861E-11 i -5.414275422086592E-15 1.206997149242897E-14 7.635810537338764E-12 7.980519879011853E-11 -7.641489166632861E-11 3.097234203464642E-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 17.3   n/a MPO413264   305591 (2008 YA88)          Discovered 2008-Dec-29 by Spacewatch at Kitt Peak Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-11 09:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin