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C/2020 H8 (PANSTARRS)
Classification: Comet          SPK-ID: 1003686
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

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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 2458987.5 (2020-May-18.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9921425971008619 0.00047  
a 594.9079718337891 35.618 au
q 4.674431622607155 0.00026038 au
i 99.6456340842264 0.0034727 deg
node 68.40823714121156 0.0044712 deg
peri 128.8833249613964 0.017573 deg
M 359.9988382081427 9.7052e-05 deg
tp 2459004.604049203825
(2020-Jun-04.10404920)		 0.13428 TDB
period 5299966.319203743
14510.52		 4.7597e+05
1303		 d
yr
n 6.792495995598812E-5 6.1001e-06 deg/d
Q 1185.141512044971 70.955 au
   Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      65 days  
   first obs. used      2020-04-30  
   last obs. used      2020-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .35593  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-09 22:14:15  

Additional Information
 Earth MOID = 3.97233 au 
 Jupiter MOID = .32672 au 
 T_jup = -0.440 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 10.4   0.4 7 from 117 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 10.   n/a 7 autocmod 2.8
comet nuclear magnitude M2 13.7   0.6 7 from 4 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 7 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 7 autocmod 2.8

Alternate Designations
 Perihelion 
Year (est.)		  New-Style 
Desig		 Roman
 Numeral 		 Year/
 Letter 
 2020.4   C/2020 H8       
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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