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

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454436.5 (2007-Dec-02.0) TDB
Reference: JPL K215/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8198210766542805 1.1803e-07  
a 5.700607824699933 4.3091e-06 au
q 1.027129380270618 1.2713e-07 au
i 54.98320551177169 1.3076e-05 deg
node 270.3416504896738 5.5856e-06 deg
peri 207.507522704472 2.1281e-05 deg
M 355.9430917200544 5.4344e-06 deg
tp 2454492.523838592604
(2008-Jan-27.02383859)
1.517e-05 TDB
period 4971.416778889489
13.61
0.0056368
1.543e-05
d
yr
n .07241396487389587 8.2107e-08 deg/d
Q 10.37408626912925 7.8418e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.762124781272548E-10 9.101E-11
A2 [EST] 1.393617473878645E-10 2.165E-13
A3 [EST] -4.771233540626965E-10 1.05E-10
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      19631 days (53.75 yr)  
   first obs. used      1967-01-07  
   last obs. used      2020-10-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .69606  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Oct-19 09:40:30  

Additional Information
 Earth MOID = .0950564 au 
 Jupiter MOID = .738702 au 
 T_jup = 1.601 
[ 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 12.3   1. K215/6 2 parameter fit from 177 observations, autocmod 2.9a
comet total magnitude slope K1 10.5   n/a K215/6 autocmod 2.9a
comet nuclear magnitude M2 16.7   0.8 K215/6 from 1222 observations, autocmod 2.9a
comet nuclear magnitude slope K2 5.   n/a K215/6 autocmod 2.9a
comet nuclear phase coefficient PC 0.03   n/a K215/6 autocmod 2.9a
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 
 1980.8       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 
 1858.3   8P/1858 A1   1858 I   
 1790.3   8P/1790 A2   1790 II   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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