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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 ]
:
Orbital Elements at Epoch 2457164.5 (2015-May-22.0) TDB
Reference: JPL 159 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .510164382870318 1.1159e-08  
a 3.145003734066987 5.8854e-08 AU
q 1.540534844951857 5.2718e-08 AU
i 10.47882312524691 6.3766e-06 deg
node 68.82091460365126 8.8366e-06 deg
peri 179.2070921726103 1.784e-05 deg
M 282.5084551988193 1.6591e-05 deg
tp 2457603.012515419274
(2016-Aug-02.51251542)
0.00010618 JED
period 2037.183617334899
5.58
5.7184e-05
1.566e-07
d
yr
n .1767145567717466 4.9604e-09 deg/d
Q 4.749472623182117 8.8879e-08 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.138156294152702E-10 1.551E-11
A2 [EST] 1.594994044526136E-11 1.562E-13
A3 [EST] 1.427773937321204E-10 1.852E-11
  Orbit Determination Parameters
   # obs. used (total)      9977  
   data-arc span      17389 days (47.61 yr)  
   first obs. used      1967-06-08  
   last obs. used      2015-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .41024  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:33:46  

Additional Information
 Earth MOID = .52685 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.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 
 1871.6   9P/1873 G1   1873 I   1873a 
 1866.0   9P/1867 G1   1867 II   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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