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36P/Whipple
Classification: Jupiter-family Comet          SPK-ID: 1000105
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454434.5 (2007-Nov-30.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2580974157837106 8.7359e-08  
a 4.164670396906554 4.1714e-08 au
q 3.089779729874052 3.6274e-07 au
i 9.934980965911562 1.0631e-05 deg
node 182.3896555863036 5.0715e-05 deg
peri 202.022111634382 5.9384e-05 deg
M 186.6948394360372 2.0723e-05 deg
tp 2455928.939627142581
(2012-Jan-02.43962714)
0.0001635 TDB
period 3104.340713344002
8.50
4.6641e-05
1.277e-07
d
yr
n .1159666522597023 1.7423e-09 deg/d
Q 5.239561063939056 5.2481e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 5.039508373223555E-9 1.043E-9
A2 [EST] -5.367556224074581E-10 3.482E-11
  Orbit Determination Parameters
   # obs. used (total)      882  
   data-arc span      26479 days (72.50 yr)  
   first obs. used      1948-07-18  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65134  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Feb-01 11:23:06  

Additional Information
 Earth MOID = 2.09588 au 
 Jupiter MOID = .258223 au 
 T_jup = 2.952 
[ 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 11.3   0.6 17 2 parameter fit from 534 observations, autocmod 2.9a
comet total magnitude slope K1 11.75   n/a 17 autocmod 2.9a
comet nuclear magnitude M2 14.4   0.8 17 from 213 observations, autocmod 2.9a
comet nuclear magnitude slope K2 5.   n/a 17 autocmod 2.9a
comet nuclear phase coefficient PC 0.03   n/a 17 autocmod 2.9a
diameter diameter 4.56 km n/a Lamy,P.L,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (To be published)  

36P/Whipple          Discovered 1933-Oct-15 by Whipple, Fred L. at Harvard College Observatory, Oak Ridge, Mass
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 
 1995.0       1994 XXXII   1993n 
 1986.5       1986 XII   1985h 
 1978.0       1978 VIII   1977h 
 1969.5       1970 XIV   1969c 
 1961.0       1963 II   1962f 
 1952.5       1955 VIII   1955d 
 1944.0   36P/1940 R1   1948 VI   1947g 
 1935.5   36P/1933 U1   1933 IV   1933f 
 1927.0   36P/1925 QD   1926 VIII   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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