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

[ show orbit diagram ]
Orbital Elements at Epoch 2456364.5 (2013-Mar-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4125583951342929 2.5578e-06  
a 3.469309011750889 6.8604e-06 AU
q 2.038016453638003 1.25e-05 AU
i 4.940348956269786 3.8502e-05 deg
node 146.8956372024383 0.00023431 deg
peri 230.8727177836223 0.0025447 deg
M 72.49581816010924 0.0010193 deg
tp 2455889.193932889406
(2011-Nov-23.69393289)
0.0057331 JED
period 2360.276613223562
6.46
0.007001
1.917e-05
d
yr
n .152524495638809 4.5242e-07 deg/d
Q 4.900601569863776 9.6907e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.506618689838595E-8 1.146E-8
A2 [EST] 3.957379730753531E-12 1.211E-10
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      4910 days (13.44 yr)  
   first obs. used      1998-09-14  
   last obs. used      2012-02-23  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      2  
   fit RMS      .60052  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Mar-03 19:30:45  

Additional Information
 Earth MOID = 1.04187 AU 
 T_jup = 2.982 
[ 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 13.1 mag 0.7 13 2 parameter fit from 161 observations, autocmod 2.5b
comet total magnitude slope K1 14.   n/a 13 autocmod 2.5b
comet nuclear magnitude M2 15.9 mag 0.5 13 from 143 observations, autocmod 2.5b
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.5b
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.5b

[ 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 | Physical Parameters | Close-Approach Data ]
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