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JPL Small-Body Database Browser
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C/2017 O1 (ASASSN)
Classification: Comet          SPK-ID: 1003526
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458039.5 (2017-Oct-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9964238189796272 2.37e-06  
a 419.0746089299389 0.27787 au
q 1.498686662575412 5.3329e-07 au
i 39.84839901518298 2.155e-05 deg
node 25.80947945298256 1.5272e-05 deg
peri 20.90786457760218 2.4607e-05 deg
M 359.9997949061882 2.0605e-07 deg
tp 2458041.285194357961
(2017-Oct-14.78519436)
3.8663e-05 TDB
period 3133541.490658403
8579.17
3116.6
8.533
d
yr
n .0001148859847789533 1.1426e-07 deg/d
Q 836.6505311973025 0.55475 au
  Orbit Determination Parameters
   # obs. used (total)      2869  
   data-arc span      508 days (1.39 yr)  
   first obs. used      2017-07-19  
   last obs. used      2018-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .44936  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-06 08:42:44  

Additional Information
 Earth MOID = .534776 au 
 Jupiter MOID = 2.2744 au 
 T_jup = 1.177 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.6   1. 17 2 parameter fit from 351 observations, autocmod 2.8
comet total magnitude slope K1 7.5   n/a 17 autocmod 2.8

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2017.8   C/2017 O1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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