+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   9937 Triceratops (1988 DJ2) Classification: Main-belt Asteroid          SPK-ID: 2009937 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2308763587345214 3.5753e-08   a 2.366243803242119 6.0193e-09 au q 1.819934050071453 8.6266e-08 au i 1.263742887599269 4.2801e-06 deg node 327.2298870596165 0.0001481 deg peri 47.21967915591117 0.00014835 deg M 94.66843421106584 8.6907e-06 deg tp 2458850.884760791150 (2020-Jan-02.38476079) 3.1462e-05 TDB period 1329.497917273824 3.64 5.073e-06 1.389e-08 d yr n .2707789123417289 1.0332e-09 deg/d Q 2.912553556412785 7.409e-09 au   Orbit Determination Parameters    # obs. used (total)      1559      data-arc span      13585 days (37.19 yr)      first obs. used      1983-11-08      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5651      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:51:46   Additional Information  Earth MOID = .819654 au   Jupiter MOID = 2.55618 au   T_jup = 3.511  [ show covariance matrix ] [ 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 15.0   n/a MPO502244   9937 Triceratops           Discovered 1988 Feb. 17 by E. W. Elst at the European Southern Observatory. Triceratops was a heavy dinosaur with three horns, two above the eyes and one on the snout. It lived in Upper Cretaceous times. Many Triceratops skeletons have been found in Wyoming and Colorado. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20021120/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1988 DJ2 = 1983 VY2 = 1990 QZ7 = 1990 RH6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 04:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin