+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305801 (2009 DD90) Classification: Main-belt Asteroid          SPK-ID: 2305801 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .107652843053617 6.6265e-08   a 2.598405052218345 3.6997e-08 au q 2.318679360942158 1.8923e-07 au i 10.18436328044839 1.1488e-05 deg node 170.4744918706364 4.5857e-05 deg peri 251.2672691066775 7.8795e-05 deg M 331.2650666633887 6.9108e-05 deg tp 2459122.614264494730 (2020-Sep-30.11426449) 0.00029497 TDB period 1529.884712211662 4.19 3.2675e-05 8.946e-08 d yr n .2353118487468051 5.0257e-09 deg/d Q 2.878130743494532 4.098e-08 au   Orbit Determination Parameters    # obs. used (total)      101      data-arc span      5253 days (14.38 yr)      first obs. used      2005-03-10      last obs. used      2019-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58761      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 05:55:01   Additional Information  Earth MOID = 1.35375 au   Jupiter MOID = 2.44652 au   T_jup = 3.385  [ hide covariance matrix ] Orbital Elements at Epoch 2456996.5 (2014-Dec-05.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1076855586097997 6.6036e-08   q 2.31925214675685 1.8922e-07 au tp 2457586.308839551588 (2016-Jul-16.80883955) 0.00027989 TDB node 170.6147423899049 4.5788e-05 deg peri 249.9158403036282 7.8904e-05 deg i 10.19131465601141 1.1492e-05 deg   Orbit Determination Parameters    # obs. used (total)      101      data-arc span      5253 days (14.38 yr)      first obs. used      2005-03-10      last obs. used      2019-07-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58761      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 05:55:01   Additional Information  Jupiter MOID = 2.44652 au   T_jup = 3.385  Orbit Covariance (6×6)   e q tp node peri i e 4.360721567404163E-15 -1.233919514334649E-14 -1.488286337963149E-12 -2.392787732447956E-14 -1.285020214434942E-13 4.552629786920988E-15 q -1.233919514334649E-14 3.58049062089532E-14 7.893054487421221E-12 6.649260668016254E-14 1.138903358624284E-12 -8.213099712910705E-15 tp -1.488286337963149E-12 7.893054487421221E-12 7.833747109956914E-8 1.524592953999663E-11 1.801840655138426E-8 6.128551267409084E-11 node -2.392787732447956E-14 6.649260668016254E-14 1.524592953999663E-11 2.096506186468291E-9 -2.059569512319332E-9 -2.526963609345684E-10 peri -1.285020214434942E-13 1.138903358624284E-12 1.801840655138426E-8 -2.059569512319332E-9 6.225769716768531E-9 2.630496253070076E-10 i 4.552629786920988E-15 -8.213099712910705E-15 6.128551267409084E-11 -2.526963609345684E-10 2.630496253070076E-10 1.32062740306137E-10 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.1   n/a MPO446456   305801 (2009 DD90)          Discovered 2009-Feb-26 by Spacewatch at Kitt Peak Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 Alternate Designations  2009 DD90 = 2005 FF14 = 2007 RG245  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-25 23:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin