Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
36P/Whipple
Classification: Jupiter-family Comet          SPK-ID: 1000105
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

:
Orbital Elements at Epoch 2452737.5 (2003-Apr-08.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2591462074721685 1.1481e-07  
a 4.168513940958045 5.6845e-08 au
q 3.088259362363905 4.9459e-07 au
i 9.932581139878453 1.3863e-05 deg
node 182.398835502527 5.289e-05 deg
peri 202.2127324759689 6.0372e-05 deg
M 349.6183855315672 2.152e-05 deg
tp 2452827.146370366632
(2003-Jul-06.64637037)
0.00018489 TDB
period 3108.639164950557
8.51
6.3588e-05
1.741e-07
d
yr
n .1158063000874937 2.3688e-09 deg/d
Q 5.248768519552184 7.1576e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.489477391656978E-9 1.12E-9
A2 [EST] -5.253268897731884E-10 3.573E-11
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      26111 days (71.49 yr)  
   first obs. used      1948-07-18  
   last obs. used      2020-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70721  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Feb-11 09:46:31  

Additional Information
 Earth MOID = 2.09352 au 
 Jupiter MOID = .24922 au 
 T_jup = 2.951 
[ 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 10.2   0.7 8 2 parameter fit from 281 observations, autocmod 2.8
comet total magnitude slope K1 13.5   n/a 8 autocmod 2.8
comet nuclear magnitude M2 14.4   0.8 8 from 197 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 8 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 8 autocmod 2.8
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 
 1952.4       1955 VIII   1955d 
 1943.9   36P/1940 R1   1948 VI   1947g 
 1935.4   36P/1933 U1   1933 IV   1933f 
 1926.9   36P/1925 QD   1926 VIII   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-05 20:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin