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258P/PANSTARRS
Classification: Jupiter-family Comet          SPK-ID: 1003186
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455394.5 (2010-Jul-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2088043835288372 3.4733e-06  
a 4.397398984216789 5.6116e-07 AU
q 3.479202800187067 1.5225e-05 AU
i 6.74623638637479 4.0275e-05 deg
node 126.3448348260112 0.00073409 deg
peri 25.82897843772859 0.0022716 deg
M 333.8007068722156 0.0013359 deg
tp 2455639.620315925038
(2011-Mar-19.12031593)
0.012497 JED
period 3368.156282026991
9.22
0.00064473
1.765e-06
d
yr
n .1068834014386495 2.0459e-08 deg/d
Q 5.31559516824651 6.7834e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      35  
   data-arc span      3724 days (10.20 yr)  
   first obs. used      2002-03-11  
   last obs. used      2012-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      1  
   fit RMS      .4646  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:42:08  

Additional Information
 Earth MOID = 2.49123 AU 
 T_jup = 2.969 
[ 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 12.4 mag 0.6 6 from 23 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 6 autocmod 2.5c
comet nuclear magnitude M2 16.1 mag 0.2 6 from 7 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 6 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 6 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2011.2   258P/2012 H1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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