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84P/Giclas
Classification: Jupiter-family Comet          SPK-ID: 1000033
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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:
Orbital Elements at Epoch 2454733.5 (2008-Sep-24.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4928216893205943 3.039e-07  
a 3.646021705245254 3.1035e-08 au
q 1.849183129166734 1.1097e-06 au
i 7.281422294577746 1.4478e-05 deg
node 112.4706831978229 7.2989e-05 deg
peri 276.2526270901361 9.0064e-05 deg
M 110.2018101791755 1.7675e-05 deg
tp 2453955.080818649722
(2006-Aug-07.58081865)
0.00011967 TDB
period 2542.888404741056
6.96
3.2467e-05
8.889e-08
d
yr
n .1415712932304865 1.8076e-09 deg/d
Q 5.442860281323775 4.6329e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.651340946948547E-10 5.506E-11
A2 [EST] -2.333530535989999E-11 3.787E-13
  Orbit Determination Parameters
   # obs. used (total)      1283  
   data-arc span      15339 days (42.00 yr)  
   first obs. used      1978-09-03  
   last obs. used      2020-09-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64703  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2020-Sep-03 10:27:24  

Additional Information
 Earth MOID = .870614 au 
 Jupiter MOID = .552486 au 
 T_jup = 2.872 
[ 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 15.2   1. 42 2 parameter fit from 380 observations, autocmod 2.9
comet total magnitude slope K1 4.5   n/a 42 autocmod 2.9
diameter diameter 1.80 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

84P/Giclas          Discovered 1978-Sep-08 by Giclas, Henry L. at Lowell Observatory
First known observation: 1978/09/03
Reference: comet.disLast Updated: 2003-08-29

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Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1992.7       1992 XXV   1992l 
 1985.7   84P/1985 M1   1985 XV   1985g 
 1978.8   84P/1978 R2   1978 XXII   1978k 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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