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8P/Tuttle
Classification: Jupiter-family Comet* [NEO]          SPK-ID: 1000099
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454374.5 (2007-Oct-01.0) TDB
Reference: JPL K074/27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.8197997470243816309221 1.4498e-08  
a 5.6998620708785754374048 7.1817e-07 AU
q 1.0271165870984511059305 1.5918e-07 AU
i 54.983184844602092766763 1.5011e-05 deg
node 270.3416520050764 9.9219e-06 deg
peri 207.5092459727414 1.9885e-05 deg
M 351.4516245290291 1.9365e-06 deg
tp 2454492.525550628393
(2008-Jan-27.02555063)
1.2297e-05 JED
period 4970.441269280825
13.61
0.0009394
2.572e-06
d
yr
n .07242817699606147 1.3689e-08 deg/d
Q 10.3726075546587 1.3069e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.894844426325457E-10 8.358E-11
A2 [EST] 1.370445739396238E-10 1.734E-13
A3 [EST] -4.593469638447816E-10 9.897E-11
  Orbit Determination Parameters
   # obs. used (total)      1555  
   data-arc span      15126 days (41.41 yr)  
   first obs. used      1967-01-07  
   last obs. used      2008-06-06  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .63669  
   data source      ORB  
   producer      Nick Mastrodemos  
   solution date      2008-Jun-25 15:10:45  

Additional Information
 Earth MOID = .0953103 AU 
 T_jup = 1.601 
[ 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 9.8 mag 1. K074/27 2 parameter fit from 139 observations, autocmod 2.4a
comet total magnitude slope K1 21.   n/a K074/27 autocmod 2.4a
comet nuclear magnitude M2 16.7 mag 0.8 K074/27 from 1232 observations, autocmod 2.4a
comet nuclear magnitude slope K2 5.   n/a K074/27 autocmod 2.4a
comet nuclear phase coefficient PC 0.03   n/a K074/27 autocmod 2.4a
diameter diameter 4.5 km 1. Harmon, J.K.;Nolan,M.C.;Howell,E.S.;Giorgini,J.D. (2008) IAUC 8909 equivalent diameter of a sphere having a volume equal to the sum of a 3km and 4km sphere

8P/Tuttle          Discovered 1790-Jan-09 by Mechain, Pierre F. A. at Paris, France
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1994.5       1994 XV   1992r 
 1980.9       1980 XIII   1980h 
 1967.2       1967 V   1967a 
 1940.0       1939 X   1939k 
 1926.4       1926 IV   1926a 
 1912.8       1912 IV   1912b 
 1899.2       1899 III   1899b 
 1885.6       1885 IV   1885b 
 1872.0   8P/1871 T1   1871 III   1871d 
 1858.4   8P/1858 A1   1858 I   
 1790.3   8P/1790 A2   1790 II   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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