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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 2457604.5 (2016-Aug-04.0) TDB
Reference: JPL K224/4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .509590319944669 1.6373e-06  
a 3.14541911034839 1.0473e-05 au
q 1.542543979545878 6.9506e-07 au
i 10.4740346324653 1.4152e-05 deg
node 68.74919004623845 6.8183e-05 deg
peri 179.20655532 9.6693e-05 deg
M .2504200902681015 2.1343e-05 deg
tp 2457603.082631177524
(2016-Aug-02.58263118)
0.00011538 TDB
period 2037.587222115765
5.58
0.010177
2.786e-05
d
yr
n .1766795531953659 8.8242e-07 deg/d
Q 4.748294241150902 1.581e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.230186836065846E-9 2.592E-10
A2 [EST] -3.4598580134414E-10 2.605E-10
A3 [EST] -2.637965897142096E-10 1.566E-10
  Orbit Determination Parameters
   # obs. used (total)      1541  
   data-arc span      1896 days (5.19 yr)  
   first obs. used      2015-11-11  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .43921  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Feb-01 11:04:18  

Additional Information
 Earth MOID = .528253 au 
 Jupiter MOID = .298517 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 K224/4 2 parameter fit from 456 observations, autocmod 2.9a
comet total magnitude slope K1 10.   n/a K224/4 autocmod 2.9a
comet nuclear magnitude M2 14.6   0.6 K224/4 from 1018 observations, autocmod 2.9a
comet nuclear magnitude slope K2 5.   n/a K224/4 autocmod 2.9a
comet nuclear phase coefficient PC 0.03   n/a K224/4 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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