+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   D/1993 F2-V (Shoemaker-Levy 9) Classification: Jupiter-family Comet          SPK-ID: 1000202 [ 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 V27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .204616254273571 6.8091e-06   a 6.762831331517656 5.9857e-05 au q 5.379046116178567 5.498e-06 au i 5.764889818272783 6.5206e-05 deg node 221.0607869247233 0.00012447 deg peri 355.0500858202889 0.0019169 deg M 2.052673434075682 0.0012629 deg tp 2449443.872386582818 (1994-Apr-01.37238658) 0.022108 TDB period 6423.788904406582 17.59 0.085284 0.0002335 d yr n .05604169211616647 7.4402e-07 deg/d Q 8.146616546856746 7.2104e-05 au   Orbit Determination Parameters    planetary ephem.      DE403      source      ORB   Additional Information  Earth MOID = 4.37249 au   Jupiter MOID = .00492081 au   T_jup = 2.990   not valid before 1992-Jul-15.00000000   not valid after 1994-Jul-22.18194444   Valid 1992-Jul-15_00:00 to 1994-Jul-22_04:22 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-V        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Close-Approach Data ] 2021-Jan-21 16:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin