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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 2454366.5 (2007-Sep-23.0) TDB
Reference: JPL K215/2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8197966224140293 1.8483e-08  
a 5.699745304269537 6.7942e-07 au
q 1.027113355209147 2.1184e-07 au
i 54.98317381441031 1.6388e-05 deg
node 270.3416211910725 1.1095e-05 deg
peri 207.509542802402 2.4835e-05 deg
M 350.8719002741928 2.1575e-06 deg
tp 2454492.525803910571
(2008-Jan-27.02580391)
1.2153e-05 TDB
period 4970.288534374401
13.61
0.0008887
2.433e-06
d
yr
n .0724304026839183 1.2951e-08 deg/d
Q 10.37237725332993 1.2364e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.083735556013546E-10 1.041E-10
A2 [EST] 1.393061730131474E-10 2.246E-13
A3 [EST] -5.188475837641523E-10 1.06E-10
  Orbit Determination Parameters
   # obs. used (total)      1586  
   data-arc span      19529 days (53.47 yr)  
   first obs. used      1967-01-07  
   last obs. used      2020-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68995  
   source      ORB  
   producer      Javier Roa  
   solution date      2020-Jul-06 14:30:56  

Additional Information
 Earth MOID = .0960284 au 
 Jupiter MOID = .738317 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 10.7   1. K215/2 2 parameter fit from 141 observations, autocmod 2.8
comet total magnitude slope K1 16.   n/a K215/2 autocmod 2.8
comet nuclear magnitude M2 16.7   0.8 K215/2 from 1220 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a K215/2 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a K215/2 autocmod 2.8
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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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