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JPL Small-Body Database Browser
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C/2018 N1 (NEOWISE)
Classification: Comet          SPK-ID: 1003579
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458326.5 (2018-Jul-27.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9966038709630269 0.0005234  
a 384.9585632362005 59.336 au
q 1.307368954637891 2.2379e-05 au
i 159.4436740501761 0.0010539 deg
node 292.4388974817783 0.0012026 deg
peri 354.5602521353434 0.0029674 deg
M 359.9992190894823 0.00018089 deg
tp 2458332.484366394167
(2018-Aug-01.98436639)
0.0025848 TDB
period 2758794.833621299
7553.17
6.3784e+05
1746
d
yr
n .0001304917624220175 3.017e-05 deg/d
Q 768.6097575177631 118.47 au
  Orbit Determination Parameters
   # obs. used (total)      258  
   data-arc span      99 days  
   first obs. used      2018-06-29  
   last obs. used      2018-10-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   norm. resid. RMS      .65914  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-25 14:45:37  

Additional Information
 Earth MOID = .292446 au 
 Jupiter MOID = 1.39713 au 
 T_jup = -1.313 
[ 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 14.1   0.9 4 from 159 observations, assumed slope, autocmod 2.6n
comet total magnitude slope K1 17.   n/a 4 autocmod 2.6n
comet nuclear magnitude M2 16.9   0.5 4 from 87 observations, autocmod 2.6n
comet nuclear magnitude slope K2 5.   n/a 4 autocmod 2.6n
comet nuclear phase coefficient PC 0.03   n/a 4 autocmod 2.6n

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2018.6   C/2018 N1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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