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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 2447998.5 (1990-Apr-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000228634268294 8.437e-07  
a -1529.839598484181 5.6465 AU
q .3497737572066227 3.8934e-07 AU
i 58.95644079395399 6.519e-05 deg
node 75.92533590271421 2.08e-05 deg
peri 61.57633764253554 3.6422e-05 deg
M .0001158345393740783 6.4092e-07 deg
tp 2447991.467611595485
(1990-Apr-09.96761160)
2.7088e-05 JED
period n/a
n/a
n/a
n/a
d
yr
n 1.647157874552395E-5 9.1192e-08 deg/d
Q n/a n/a AU
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      203 days  
   first obs. used      1989-12-06  
   last obs. used      1990-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   fit RMS      .92361  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:42:29  

Additional Information
 Earth MOID = .138551 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. 6 2 parameter fit from 15 observations, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 6 autocmod 2.5c

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