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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 ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


:
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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