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70P/Kojima
Classification: Jupiter-family Comet          SPK-ID: 1000053
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2455395.5 (2010-Jul-18.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .452541472117818 1.0879e-07  
a 3.676432645252902 4.1431e-08 au
q 2.01269440382815 4.0167e-07 au
i 6.595847299713631 6.5027e-06 deg
node 119.2600238928303 2.4082e-05 deg
peri 2.041124565777666 4.4176e-05 deg
M 142.1625768990721 2.1121e-05 deg
tp 2454378.733722261608
(2007-Oct-05.23372226)
0.00014807 TDB
period 2574.769450371507
7.05
4.3524e-05
1.192e-07
d
yr
n .1398183437154175 2.3635e-09 deg/d
Q 5.340170886677654 6.018e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.26183973729531E-10 6.278E-11
A2 [EST] -7.682112899835312E-11 1.847E-12
  Orbit Determination Parameters
   # obs. used (total)      1258  
   data-arc span      18273 days (50.03 yr)  
   first obs. used      1970-12-27  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60848  
   source      ORB  
   producer      Javier Roa  
   solution date      2021-Feb-03 22:19:56  

Additional Information
 Earth MOID = 1.02827 au 
 Jupiter MOID = .140192 au 
 T_jup = 2.905 
[ 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 11.0   1. 39 2 parameter fit from 462 observations, autocmod 2.8
comet total magnitude slope K1 14.75   n/a 39 autocmod 2.8
comet nuclear magnitude M2 14.9   0.6 39 from 595 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 39 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 39 autocmod 2.8
diameter diameter 3 km n/a Scotti,J (1994) BAAS 26:1375  

70P/Kojima          Discovered 1970-Dec-27 by Kojima, Nobuhisa at Ishiki, Japan
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.7       1994 VI   1992z 
 1986.6       1986 VII   1985o 
 1979.6   70P/1977 X1   1978 X   1977r 
 1972.5   70P/1970 Y1   1970 XII   1970r 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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