+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   9P/Tempel 1 Classification: Jupiter-family Comet          SPK-ID: 1000093 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2010-02-27.0] 91 [epoch=2009-04-30.0] 154 (default) [epoch=2006-07-04.0] K051/22 [epoch=1994-06-17.0] K007/52 [epoch=1988-12-25.0] SAO/1989 [epoch=1983-07-05.0] SAO/1983 [epoch=1978-01-12.0] SAO/1978 [epoch=1972-07-22.0] SAO/1972 [epoch=1967-01-30.0] SAO/1967 [epoch=1879-05-31.0] SAO/1879 [epoch=1873-05-22.0] SAO/1873 [epoch=1867-05-14.0] SAO/1867 Orbital Elements at Epoch 2454951.5 (2009-Apr-30.0) TDB Reference: JPL 154 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5169464593849289 2.7037e-07   a 3.12404524065952 3.37e-07 AU q 1.509081114542243 9.8306e-07 AU i 10.52512854521336 1.906e-05 deg node 68.92946820418214 0.00012157 deg peri 178.928366869722 0.00012118 deg M 248.9346068971425 1.999e-05 deg tp 2455573.729584012064 (2011-Jan-12.22958401) 0.00020618 JED period 2016.853711010545 5.52 0.00032634 8.935e-07 d yr n .178495841336763 2.8882e-08 deg/d Q 4.739009366776797 5.1121e-07 AU Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 2.343616193408633E-10 9.836E-10 A2 [EST] 4.200247906091623E-10 7.156E-10 A3 [EST] 2.212324795580851E-10 2.377E-10   Orbit Determination Parameters    # obs. used (total)      824      data-arc span      2129 days (5.83 yr)      first obs. used      2005-08-01      last obs. used      2011-05-31      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .47758      data source      ORB      producer      Steven R. Chesley      solution date      2011-Jun-16 17:02:06   Additional Information  Earth MOID = .495516 AU   T_jup = 2.970  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 13.1 mag 1.1 autocmod soln K051/22   comet total magnitude slope K1 8.0   n/a autocmod soln K051/22   diameter diameter 6.0 km 0.2 A'Hearn, M.F. et al. (2005) Science 310:258-264   extent extent 7.6x4.9 km n/a A'Hearn, M.F. et al. (2005) Science 310:258-264 preliminary shape model rotation period rot_per 40.7 h n/a A'Hearn, M.F. et al. (2005) Science 310:258-264   geometric albedo albedo 0.05   0.02 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)   9P/Tempel 1          Discovered 1867-Apr-03 by Tempel, William at Marseilles, France Reference: comet.dis Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (AU) Minimum Distance (AU) Maximum Distance (AU) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1941-Oct-13 01:12 05:01 Jupiter 0.415107595210561 0.398873458421726 0.431150804531725 5.09295534798317 4.67517014815259 2430280.550339057 301.802649640529 73101.9328495903 56.703072760521 0.0764500693572655 71.571460737322 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 1953-Sep-11 16:51 1_00:14 Jupiter 0.75181446395232 0.714059234336548 0.788267849765819 6.01453155965099 5.82420075501087 2434632.202241580 1454.57851477692 259685.874638299 236.007888019367 0.598510983195454 202.157722609317 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 2011-Nov-11 21:58 00:04 Ceres 0.0406305080000263 0.040618872346714 0.0406421512874876 10.103308493765 10.1033074646217 2455877.415888085 4.40447194982283 1433.98020139398 430.89648289363 -73.5235125652526 13561.2990927889 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 2024-May-26 10:54 02:25 Jupiter 0.551180842968803 0.54856601388675 0.553787538189926 5.28410766217128 4.98480797668465 2460456.954862798 145.447286390148 15780.0024626991 59.6427385583274 -10.130838113079 20340.8849912966 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 2036-Apr-07 01:33 02:16 Jupiter 0.910884854253109 0.909154655651354 0.912612216828047 6.1707484465623 6.01816888993441 2464790.564937969 136.689740584603 15733.0101780286 508.535158371429 -10.91506956335 5173.71248705834 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 2108-Jan-14 12:36 08:58 Jupiter 1.88279150808293 1.86501167463322 1.9004342751995 9.07758350036059 9.0278884792169 2491004.025014693 538.256351041842 221946.372044927 442.562082107875 -6.28548737982597 10358.2103996295 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 2119-Nov-28 14:38 13:39 Jupiter 0.494286867381784 0.480390820444193 0.508069004523474 4.85749178426764 4.49087693130212 2495340.110084290 819.442294718554 65959.8664613491 255.061565076995 -16.2804871192371 6340.97943394715 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 2131-Nov-14 10:18 10:28 Jupiter 1.1340907698139 1.12917170478202 1.13899671519329 6.99673005299066 6.88915699434784 2499708.929534694 628.076487181224 63229.516585406 281.670478538173 -15.1833594973635 18190.2746823092 T 154 CATAB v2.0c-linF95 2011-Jun-16 17:05:02 2011-Jun-16 17:05 Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1994.5       1994 XIX   1993c   1988.9       1989 I   1987e1   1983.4       1983 XI   1982j   1977.9       1978 II   1977i   1972.4   9P/1972 A1   1972 V   1972a   1966.9   9P/1967 L1   1966 VII     1878.5       1879 III   1879b   1873.0   9P/1873 G1   1873 I   1873a   1867.5   9P/1867 G1   1867 II    [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-22 21:04 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin