+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   447159 (2005 JC20) Classification: Main-belt Asteroid          SPK-ID: 2447159 [ 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 .2083145218318187 7.6898e-08   a 2.663054177135381 2.9389e-08 au q 2.108301319613197 2.0281e-07 au i 13.85625539084464 7.3581e-06 deg node 98.07674334287158 3.6731e-05 deg peri 82.70771212106719 4.0752e-05 deg M 196.4469571771551 2.0678e-05 deg tp 2459721.648255364480 (2022-May-22.14825536) 9.7233e-05 TDB period 1587.334405098273 4.35 2.6276e-05 7.194e-08 d yr n .2267953109588853 3.7543e-09 deg/d Q 3.217807034657566 3.5511e-08 au   Orbit Determination Parameters    # obs. used (total)      137      data-arc span      5195 days (14.22 yr)      first obs. used      2005-05-04      last obs. used      2019-07-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .63292      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 07:48:54   Additional Information  Earth MOID = 1.16468 au   Jupiter MOID = 1.94576 au   T_jup = 3.313  [ hide covariance matrix ] Orbital Elements at Epoch 2457560.5 (2016-Jun-21.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2076514285008058 7.7311e-08   q 2.111278431001708 2.0405e-07 au tp 2458134.946792099955 (2018-Jan-16.44679210) 8.5616e-05 TDB node 98.10132718661346 3.6759e-05 deg peri 82.88067593280587 4.0764e-05 deg i 13.84805962795429 7.354e-06 deg   Orbit Determination Parameters    # obs. used (total)      137      data-arc span      5195 days (14.22 yr)      first obs. used      2005-05-04      last obs. used      2019-07-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .63292      source      ORB      producer      Otto Matic      solution date      2019-Sep-24 07:48:54   Additional Information  Jupiter MOID = 1.94576 au   T_jup = 3.313  Orbit Covariance (6×6)   e q tp node peri i e 5.977052142981813E-15 -1.56734017054242E-14 2.236225256585759E-12 -4.626092395872939E-14 5.529097074541927E-13 -7.381207407747492E-15 q -1.56734017054242E-14 4.163638550900633E-14 -5.335916182253766E-12 1.30132540081376E-13 -1.398973895676343E-12 1.861415996935658E-14 tp 2.236225256585759E-12 -5.335916182253766E-12 7.33013849018738E-9 -6.167680972054436E-12 1.602736671393876E-9 -8.149992578307648E-12 node -4.626092395872939E-14 1.30132540081376E-13 -6.167680972054436E-12 1.351257407433172E-9 -1.313387060543781E-9 -5.880504973859928E-11 peri 5.529097074541927E-13 -1.398973895676343E-12 1.602736671393876E-9 -1.313387060543781E-9 1.66172470010039E-9 5.518328513890181E-11 i -7.381207407747492E-15 1.861415996935658E-14 -8.149992578307648E-12 -5.880504973859928E-11 5.518328513890181E-11 5.40808580292212E-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 16.5   n/a MPO437739   447159 (2005 JC20)          Discovered 2005-May-04 by CSS at Catalina Reference: Last Updated: 2015-10-28 [ show close-approach data ] Alternate Designations  2005 JC20 = 2009 DA111  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-07 14:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin