Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
9P/Tempel 1
Classification: Jupiter-family Comet          SPK-ID: 1000093
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


:
Orbital Elements at Epoch 2457604.5 (2016-Aug-04.0) TDB
Reference: JPL K224/4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .509590319944669 1.6373e-06  
a 3.14541911034839 1.0473e-05 au
q 1.542543979545878 6.9506e-07 au
i 10.4740346324653 1.4152e-05 deg
node 68.74919004623845 6.8183e-05 deg
peri 179.20655532 9.6693e-05 deg
M .2504200902681015 2.1343e-05 deg
tp 2457603.082631177524
(2016-Aug-02.58263118)
0.00011538 TDB
period 2037.587222115765
5.58
0.010177
2.786e-05
d
yr
n .1766795531953659 8.8242e-07 deg/d
Q 4.748294241150902 1.581e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.230186836065846E-9 2.592E-10
A2 [EST] -3.4598580134414E-10 2.605E-10
A3 [EST] -2.637965897142096E-10 1.566E-10
  Orbit Determination Parameters
   # obs. used (total)      1541  
   data-arc span      1896 days (5.19 yr)  
   first obs. used      2015-11-11  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .43921  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Feb-01 11:04:18  

Additional Information
 Earth MOID = .528253 au 
 Jupiter MOID = .298517 au 
 T_jup = 2.970 
[ 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
comet total magnitude M1 12.4   0.8 K224/4 2 parameter fit from 456 observations, autocmod 2.9a
comet total magnitude slope K1 10.   n/a K224/4 autocmod 2.9a
comet nuclear magnitude M2 14.6   0.6 K224/4 from 1018 observations, autocmod 2.9a
comet nuclear magnitude slope K2 5.   n/a K224/4 autocmod 2.9a
comet nuclear phase coefficient PC 0.03   n/a K224/4 autocmod 2.9a
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.disLast 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-12 13:57 13:52 Jupiter 0.408590561516731 0.400153619469385 0.417019455212199 5.08769587308373 4.66246494779656 2430280.081435306 832.461717010148 408714.438526584 1088.77960503998 2.85298539051102 1617.19074051242 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12
1953-Sep-12 06:32 18:33 Jupiter 0.766535053180188 0.748490765964234 0.784555768072156 6.06547675600388 5.88047659059909 2434632.772165691 1113.28603051192 872601.470016688 1392.67003784397 1.56118022073664 995.211931454333 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12
2024-May-26 13:52 00:50 Jupiter 0.550574213072643 0.550532407264994 0.550616021199896 5.28172030005521 4.98193735180292 2460457.078096082 50.1009536426439 2814.88984943115 418.60385761225 -53.1480342392171 122552.430174818 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12
2036-Apr-07 05:15 01:13 Jupiter 0.910177549669481 0.908962531200022 0.911392477790079 6.16712960872744 6.01433810212732 2464790.718846232 73.4598965450798 58810.5926304853 1113.06215757616 2.05310466729042 2554.33050007083 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12
2108-Jan-14 00:34 16:51 Jupiter 1.8900921886159 1.88162504367779 1.89855934517518 9.09680623280429 9.04740886841932 2491003.523736177 1011.36572678929 422281.62678311 1531.11119956356 -6.60762388475152 12906.9886124389 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12
2119-Nov-29 10:05 19:02 Jupiter 0.499859484029992 0.493857671926748 0.505863279769472 4.86595079070669 4.50426848724143 2495340.920235448 1141.9777283047 303029.604722329 1596.71606692402 -18.994524987416 13547.5626747613 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12
2131-Nov-14 05:38 09:05 Jupiter 1.13124912904123 1.12805735080292 1.13444238417479 6.97758140916075 6.86943540606047 2499708.734870672 545.199044759632 171947.415656147 1273.23163662154 -26.394330772525 27259.9474120256 T K224/4 CATAB v2.0f-lin.ifort 2021-Feb-01 11:12:01 2021-Feb-01 11:12

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1994.3       1994 XIX   1993c 
 1988.7       1989 I   1987e1 
 1983.1       1983 XI   1982j 
 1977.5       1978 II   1977i 
 1972.0   9P/1972 A1   1972 V   1972a 
 1966.4   9P/1967 L1   1966 VII   
 1877.1       1879 III   1879b 
 1871.5   9P/1873 G1   1873 I   1873a 
 1866.0   9P/1867 G1   1867 II   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-27 07:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin