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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 2455819.5 (2011-Sep-15.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4125867224294139 6.7314e-07  
a 3.471899321694214 5.3002e-06 au
q 2.039439759951493 1.5313e-06 au
i 4.939277717195621 2.7667e-05 deg
node 146.9382015596501 0.00018627 deg
peri 231.0057832542513 0.00034184 deg
M 349.3141048466129 0.00012537 deg
tp 2455889.638668863034
(2011-Nov-24.13866886)
0.00073742 TDB
period 2362.920506728795
6.47
0.0054109
1.481e-05
d
yr
n .1523538345766784 3.4888e-07 deg/d
Q 4.904358883436936 7.487e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.862363072312005E-9 2.49E-9
A2 [EST] -4.434851678726288E-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .63013  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 11:13:05  

Additional Information
 Earth MOID = 1.04498 au 
 Jupiter MOID = .606845 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 13.5   0.8 16 2 parameter fit from 178 observations, autocmod 2.8
comet total magnitude slope K1 12.75   n/a 16 autocmod 2.8
comet nuclear magnitude M2 15.9   0.5 16 from 141 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 16 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 16 autocmod 2.8

[ 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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