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JPL Small-Body Database Browser
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C/1998 U1 (LINEAR)
Classification: Hyperbolic Comet          SPK-ID: 1000232
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2451129.5 (1998-Nov-12.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000438480606483 0.00067167  
a -9066.40939187066 13887 au
q 3.975444688770558 0.00030125 au
i 156.4285052793357 0.0018035 deg
node 210.4570991100919 0.0022097 deg
peri 124.6456475589217 0.0086176 deg
M .0002209183454705035 0.0005075 deg
tp 2450936.000121543778
(1998-May-02.50012154)
0.075092 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.141697592954741E-6 2.6232e-06 deg/d
Q n/a n/a au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      87 days  
   first obs. used      1998-10-18  
   last obs. used      1999-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .77309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:57  

Additional Information
 Earth MOID = 3.05999 au 
 Jupiter MOID = .151674 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 9.5   n/a MPC 33131  
comet total magnitude slope K1 10   n/a MPC 33131  

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