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C/1989 X1 (Austin)
Classification: Hyperbolic Comet          SPK-ID: 1000556
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2447997.5 (1990-Apr-16.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000227276369412 6.9655e-07  
a -1538.981303257947 4.7175 AU
q .3497740831974136 3.1455e-07 AU
i 58.95640166023198 5.2194e-05 deg
node 75.92533311295396 1.8086e-05 deg
peri 61.57633827479309 2.9148e-05 deg
M 9.847924936191121E-5 4.5251e-07 deg
tp 2447991.467592499115
(1990-Apr-09.96759250)
2.2039e-05 JED
period n/a
n/a
n/a
n/a
d
yr
n 1.632503264201955E-5 7.5063e-08 deg/d
Q n/a n/a AU
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      203 days  
   first obs. used      1989-12-06  
   last obs. used      1990-06-27  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   fit RMS      .99463  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 21:14:27  

Additional Information
 Earth MOID = .138577 AU 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.4 mag 1. 5 2 parameter fit from 15 observations, autocmod 2.5a
comet total magnitude slope K1 13.   n/a 5 autocmod 2.5a

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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