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257P/Catalina
Classification: Jupiter-family Comet          SPK-ID: 1000588
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456976.5 (2014-Nov-15.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4324266179024476 1.1806e-07  
a 3.753368020300739 6.5154e-08 au
q 2.130311781538885 4.7472e-07 au
i 20.24106891316809 6.6388e-06 deg
node 207.8541034331687 1.6506e-05 deg
peri 117.8731621692947 4.1138e-05 deg
M 71.64303194542025 1.5334e-05 deg
tp 2456447.931099188965
(2013-Jun-04.43109919)
0.00012 TDB
period 2656.01272203188
7.27
6.9158e-05
1.893e-07
d
yr
n .1355415194414415 3.5293e-09 deg/d
Q 5.376424259062593 9.3329e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -1.316810932609434E-9 2.793E-10
A2 [EST] -3.084242691124963E-10 5.185E-12
  Orbit Determination Parameters
   # obs. used (total)      2062  
   data-arc span      5749 days (15.74 yr)  
   first obs. used      2005-04-17  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-30 21:13:01  

Additional Information
 Earth MOID = 1.20113 au 
 Jupiter MOID = 1.1672 au 
 T_jup = 2.823 
[ 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 15.2   0.7 104 2 parameter fit from 1205 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a 104 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.4   257P/2012 F4       
 2006.2   257P/2005 JY126       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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