+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   D/1993 F2-P2 (Shoemaker-Levy 9) Classification: Jupiter-family Comet          SPK-ID: 1000195 [ 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 P37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2078872998976261 5.1204e-06   a 6.791467491352634 4.609e-05 au q 5.37960765223283 6.7649e-06 au i 5.831257474696042 7.6877e-05 deg node 220.9047235825254 9.3195e-05 deg peri 355.0119377496794 0.001682 deg M 2.171297332401117 0.0010936 deg tp 2449441.509333033545 (1994-Mar-30.00933303) 0.019386 TDB period 6464.632871077799 17.70 0.065808 0.0001802 d yr n .05568761709742381 5.6688e-07 deg/d Q 8.203327330472439 5.5672e-05 au   Orbit Determination Parameters    planetary ephem.      DE403      source      ORB   Additional Information  Earth MOID = 4.37311 au   Jupiter MOID = .0050667 au   T_jup = 2.990   not valid before 1992-Jul-15.00000000   not valid after 1994-Jul-20.64097222   Valid 1992-Jul-15_00:00 to 1994-Jul-20_15:23 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-P2        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Close-Approach Data ] 2021-Jan-21 16:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin