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253P/PANSTARRS
Classification: Jupiter-family Comet          SPK-ID: 1003147
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455853.5 (2011-Oct-19.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4126684165114996 9.1806e-07  
a 3.472406054082862 6.2667e-06 au
q 2.039453746259543 1.3055e-06 au
i 4.939125756792141 2.7666e-05 deg
node 146.9371624589802 0.00018627 deg
peri 231.0016078466438 0.00031886 deg
M 354.4975255416378 0.00010509 deg
tp 2455889.624323142051
(2011-Nov-24.12432314)
0.00066605 TDB
period 2363.437836839899
6.47
0.006398
1.752e-05
d
yr
n .1523204860261305 4.1234e-07 deg/d
Q 4.905358361906181 8.8528e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.862483754194769E-9 2.49E-9
A2 [EST] -4.437807814560051E-11 2.704E-11
  Orbit Determination Parameters
   # obs. used (total)      362  
   data-arc span      7413 days (20.30 yr)  
   first obs. used      1998-09-14  
   last obs. used      2018-12-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .63013  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:07  

Additional Information
 Earth MOID = 1.04504 au 
 Jupiter MOID = .605855 au 
 T_jup = 2.981 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 16.2   0.8 18 2 parameter fit from 182 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 18 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.9   253P/2011 R2       
 1999.0   253P/1998 RS22       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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