+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   D/1993 F2-G (Shoemaker-Levy 9) Classification: Jupiter-family Comet          SPK-ID: 1000187 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2449480.5 (1994-May-08.0) TDB Reference: JPL G52 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2128814846925464 4.131e-06   a 6.835199945075558 3.7093e-05 au q 5.380112432597461 3.3124e-06 au i 5.93551371374279 3.5698e-05 deg node 220.6800824727586 8.1817e-05 deg peri 354.9341584873779 0.0010932 deg M 2.353728392687173 0.00071 deg tp 2449437.824451955303 (1994-Mar-26.32445196) 0.012554 TDB period 6527.175074160222 17.87 0.053132 0.0001455 d yr n .05515402849008415 4.4896e-07 deg/d Q 8.290287457553655 4.4989e-05 au   Orbit Determination Parameters    planetary ephem.      DE403      source      ORB   Additional Information  Earth MOID = 4.3737 au   Jupiter MOID = .00506737 au   T_jup = 2.989   not valid before 1992-Jul-15.00000000   not valid after 1994-Jul-18.31388888   Valid 1992-Jul-15_00:00 to 1994-Jul-18_07:32 UTC ERT  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Close-Approach Data ] no physical parameters available [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1994.2   D/1993 F2-G        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Close-Approach Data ] 2021-Jan-21 16:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin