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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.


:
Orbital Elements at Epoch 2457571.5 (2016-Jul-02.0) TDB
Reference: JPL K224/3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5096004756079923 2.1248e-06  
a 3.145487612436505 1.3586e-05 au
q 1.542545629119814 7.2405e-07 au
i 10.47398290113916 1.2993e-05 deg
node 68.74923086597421 7.3399e-05 deg
peri 179.2052246990899 9.9148e-05 deg
M 354.4205460683203 3.0379e-05 deg
tp 2457603.080542846323
(2016-Aug-02.58054285)
9.999e-05 TDB
period 2037.653785458113
5.58
0.013202
3.615e-05
d
yr
n .1766737816645645 1.1447e-06 deg/d
Q 4.748429595753197 2.051e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.237321987172662E-9 2.599E-10
A2 [EST] -3.865064132892253E-10 2.643E-10
A3 [EST] -3.067218900990234E-10 1.636E-10
  Orbit Determination Parameters
   # obs. used (total)      1513  
   data-arc span      1873 days (5.13 yr)  
   first obs. used      2015-11-11  
   last obs. used      2020-12-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .44165  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jan-19 12:57:38  

Additional Information
 Earth MOID = .52881 au 
 Jupiter MOID = .298158 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 K224/3 2 parameter fit from 428 observations, autocmod 2.9a
comet total magnitude slope K1 10.   n/a K224/3 autocmod 2.9a
comet nuclear magnitude M2 14.6   0.6 K224/3 from 1018 observations, autocmod 2.9a
comet nuclear magnitude slope K2 5.   n/a K224/3 autocmod 2.9a
comet nuclear phase coefficient PC 0.03   n/a K224/3 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

[ 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 
 1866.0   9P/1867 G1   1867 II   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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