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JPL Small-Body Database Browser
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9P/Tempel 1
Classification: Jupiter-family Comet          SPK-ID: 1000093
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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:
Orbital Elements at Epoch 2457539.5 (2016-May-31.0) TDB
Reference: JPL K224/2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5096252610534868 2.5546e-06  
a 3.145654582573013 1.6336e-05 au
q 1.542549544745144 9.0687e-07 au
i 10.47386414673321 1.3076e-05 deg
node 68.74959803160912 7.6423e-05 deg
peri 179.203580873436 0.00010399 deg
M 348.7682986118949 8.7155e-05 deg
tp 2457603.078169908423
(2016-Aug-02.57816991)		 9.5053e-05 TDB
period 2037.816033043043
5.58		 0.015874
4.346e-05		 d
yr
n .1766597151865651 1.3762e-06 deg/d
Q 4.748759620400882 2.4661e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.418524364896777E-9 3.402E-10
A2 [EST] -3.748815503298663E-10 2.99E-10
A3 [EST] -4.018541720350795E-10 1.709E-10
   Orbit Determination Parameters
   # obs. used (total)      1488  
   data-arc span      1555 days (4.26 yr)  
   first obs. used      2015-11-11  
   last obs. used      2020-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .44188  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Mar-09 10:11:38  

Additional Information
 Earth MOID = .528826 au 
 Jupiter MOID = .297608 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 K224/2 2 parameter fit from 407 observations, autocmod 2.8
comet total magnitude slope K1 10.   n/a K224/2 autocmod 2.8
comet nuclear magnitude M2 14.6   0.6 K224/2 from 1015 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a K224/2 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a K224/2 autocmod 2.8
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

[ show close-approach data ]
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 
 1865.9   9P/1867 G1   1867 II   
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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