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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.


:
Orbital Elements at Epoch 2455580.5 (2011-Jan-19.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4942446592077356 1.6082e-07  
a 3.642270481317528 2.6735e-08 au
q 1.842097748536351 5.7813e-07 au
i 7.282325825880715 1.2589e-05 deg
node 112.4098898502675 6.1366e-05 deg
peri 276.3346585697539 6.5956e-05 deg
M 230.1127050541269 1.6021e-05 deg
tp 2456496.553607795693
(2013-Jul-23.05360780)
0.00011848 TDB
period 2538.965023052299
6.95
2.7955e-05
7.654e-08
d
yr
n .1417900588355543 1.5612e-09 deg/d
Q 5.442443214098705 3.9949e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.02482324821239E-10 4.135E-11
A2 [EST] -2.326360325980224E-11 3.41E-13
  Orbit Determination Parameters
   # obs. used (total)      1597  
   data-arc span      15464 days (42.34 yr)  
   first obs. used      1978-09-03  
   last obs. used      2021-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65725  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jan-19 12:49:18  

Additional Information
 Earth MOID = .864569 au 
 Jupiter MOID = .55412 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 14.6   1. 47 2 parameter fit from 672 observations, autocmod 2.9a
comet total magnitude slope K1 5.25   n/a 47 autocmod 2.9a
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 
 1985.8   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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