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JPL Small-Body Database Browser
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C/1998 J1 (SOHO)
Classification: Hyperbolic Comet          SPK-ID: 1000216
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2450973.5 (1998-Jun-09.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000172171663882 1.8803e-05  
a -889.8932324790363 97.184 au
q .1532143985132998 8.0023e-07 au
i 62.93183004478351 0.00021268 deg
node 351.6485588070252 0.0025562 deg
peri 110.5571894692113 0.0019168 deg
M .001165108157675963 0.00019085 deg
tp 2450942.118837686697
(1998-May-08.61883769)
0.0002195 TDB
period n/a
n/a
n/a
n/a
d
yr
n 3.712762918223887E-5 6.082e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      94 days  
   first obs. used      1998-05-03  
   last obs. used      1998-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .61206  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:53  

Additional Information
 Earth MOID = .315681 au 
 Jupiter MOID = 3.14288 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.5   n/a ICQ 2002 Handbook  
comet total magnitude slope K1 7.5   n/a ICQ 2002 Handbook  
comet nuclear magnitude M2 10.   n/a ICQ 2002 Handbook  
comet nuclear magnitude slope K2 5.0   n/a ICQ 2002 Handbook  
comet nuclear phase coefficient PC 0.03   n/a ICQ 2002 Handbook  
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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