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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 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL 160 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5098191971027368 1.0745e-08  
a 3.146531761968834 6.2783e-08 au
q 1.542369465423623 5.294e-08 au
i 10.4733239248498 6.3475e-06 deg
node 68.7682816756504 8.469e-06 deg
peri 179.1872688303726 1.7658e-05 deg
M 319.8162046132129 1.7479e-05 deg
tp 2457603.059546634289
(2016-Aug-02.55954663)
0.00010578 JED
period 2038.668473194565
5.58
6.1016e-05
1.671e-07
d
yr
n .1765858474457522 5.2851e-09 deg/d
Q 4.750694058514044 9.4791e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.129917594977698E-10 1.551E-11
A2 [EST] 1.597079003984403E-11 1.558E-13
A3 [EST] 1.420598908277583E-10 1.851E-11
  Orbit Determination Parameters
   # obs. used (total)      9981  
   data-arc span      17697 days (48.45 yr)  
   first obs. used      1967-06-08  
   last obs. used      2015-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .41057  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-09 11:31:05  

Additional Information
 Earth MOID = .528971 au 
 T_jup = 2.969 
[ 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 
 1971.9   9P/1972 A1   1972 V   1972a 
 1966.4   9P/1967 L1   1966 VII   
 1877.0       1879 III   1879b 
 1871.5   9P/1873 G1   1873 I   1873a 
 1865.9   9P/1867 G1   1867 II   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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