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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 ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457722.5 (2016-Nov-30.0) TDB
Reference: JPL K224/7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .509588468064943 3.4471e-07  
a 3.145466364269142 2.0101e-06 au
q 1.542572978351424 1.0011e-06 au
i 10.47400282151021 2.0018e-05 deg
node 68.74889841631139 6.8742e-05 deg
peri 179.2123960149718 9.3681e-05 deg
M 21.09667533835497 3.6417e-05 deg
tp 2457603.090875602031
(2016-Aug-02.59087560)
0.00012104 TDB
period 2037.633138578736
5.58
0.0019532
5.348e-06
d
yr
n .176675571860351 1.6936e-07 deg/d
Q 4.74835975018686 3.0345e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.221820776841708E-9 2.583E-10
A2 [EST] -3.35709080533317E-10 2.544E-10
A3 [EST] -2.638826307372622E-10 1.432E-10
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      1978 days (5.42 yr)  
   first obs. used      2015-11-11  
   last obs. used      2021-04-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .44308  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jun-01 11:33:35  

Additional Information
 Earth MOID = .527142 au 
 Jupiter MOID = .298906 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 12.3   0.7 K224/7 2 parameter fit from 545 observations, autocmod 2.9c
comet total magnitude slope K1 10.25   n/a K224/7 autocmod 2.9c
comet nuclear magnitude M2 14.6   0.6 K224/7 from 1024 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a K224/7 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a K224/7 autocmod 2.9c
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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