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C/1998 Y1 (LINEAR)
Classification: Halley-type Comet*          SPK-ID: 1000245
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2451191.5 (1999-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9238993762408438 2.0811e-05  
a 22.95631146081127 0.0063419 au
q 1.746989621377203 1.1365e-05 au
i 28.10815562674253 0.00027305 deg
node 98.85872325392678 3.8076e-05 deg
peri 339.8436273745078 0.00086995 deg
M .4697149074122837 0.00018993 deg
tp 2451139.081639607719
(1998-Nov-21.58163961)
0.0012694 TDB
period 40174.60260135587
109.99
16.648
0.04558
d
yr
n .008960885153543503 3.7133e-06 deg/d
Q 44.16563330024533 0.012201 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      115 days  
   first obs. used      1998-12-22  
   last obs. used      1999-04-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .71468  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:57  

Additional Information
 Earth MOID = .782205 au 
 Jupiter MOID = 1.73174 au 
 T_jup = 1.644 
[ 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 14.   n/a MPC 33797  
comet total magnitude slope K1 10   n/a MPC 33797  

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1998.9   C/1998 Y1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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