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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 ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454680.5 (2008-Aug-02.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4927386898707408 4.0223e-07  
a 3.646276788940983 3.9616e-08 au
q 1.849615141052111 1.4762e-06 au
i 7.281480665734911 1.4672e-05 deg
node 112.4715870620582 7.3224e-05 deg
peri 276.2590100204805 0.00011363 deg
M 102.6948829822252 2.0954e-05 deg
tp 2453955.030464709017
(2006-Aug-07.53046471)
0.00014004 TDB
period 2543.155268505034
6.96
4.1446e-05
1.135e-07
d
yr
n .1415564375711995 2.307e-09 deg/d
Q 5.442938436829854 5.9136e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.967311120780008E-10 7.275E-11
A2 [EST] -2.312791067181524E-11 4.056E-13
  Orbit Determination Parameters
   # obs. used (total)      1268  
   data-arc span      15289 days (41.86 yr)  
   first obs. used      1978-09-03  
   last obs. used      2020-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64804  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2020-Jul-22 23:56:04  

Additional Information
 Earth MOID = .870574 au 
 Jupiter MOID = .552319 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. 40 2 parameter fit from 365 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 40 autocmod 2.8
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

[ show close-approach data ]
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 
 1978.7   84P/1978 R2   1978 XXII   1978k 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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