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C/1999 XS87 (LINEAR)
Classification: Jupiter-family Comet          SPK-ID: 1000287
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2451552.5 (2000-Jan-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8405749675266072 8.6958e-05  
a 17.38647647380899 0.0092062 au
q 2.771839576434878 0.00010188 au
i 14.84640783424893 0.00060711 deg
node 266.7293589199456 0.00036055 deg
peri 151.3545326598667 0.0056404 deg
M 2.112637723669316 0.001475 deg
tp 2451397.104541460797
(1999-Aug-06.60454146)
0.016005 TDB
period 26479.86658921819
72.50
21.032
0.05758
d
yr
n .01359523465826604 1.0798e-05 deg/d
Q 32.0011133711831 0.016945 au
  Orbit Determination Parameters
   # obs. used (total)      98  
   data-arc span      144 days  
   first obs. used      1999-10-13  
   last obs. used      2000-03-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .46821  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:02  

Additional Information
 Earth MOID = 1.79477 au 
 Jupiter MOID = 1.23192 au 
 T_jup = 2.214 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.7   01. 15 2 parameter fit from 29 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 15 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1999.6   C/1999 XS87       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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