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297P/Beshore
Classification: Encke-type Comet          SPK-ID: 1002501
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454890.5 (2009-Feb-28.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3086061015924718 5.4753e-07  
a 3.484036351330629 3.0272e-07 au
q 2.408841475140024 2.106e-06 au
i 10.26338969566903 2.3016e-05 deg
node 98.28508007705238 0.00010082 deg
peri 131.8200424556797 0.00071836 deg
M 52.13174115534846 0.00034469 deg
tp 2454546.528727689736
(2008-Mar-21.02872769)
0.0023016 TDB
period 2375.32173849119
6.50
0.00030958
8.476e-07
d
yr
n .1515584159258665 1.9753e-08 deg/d
Q 4.559231227521234 3.9614e-07 au
  Orbit Determination Parameters
   # obs. used (total)      569  
   data-arc span      4838 days (13.25 yr)  
   first obs. used      2001-03-20  
   last obs. used      2014-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .69609  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:17  

Additional Information
 Earth MOID = 1.41231 au 
 Jupiter MOID = .674615 au 
 T_jup = 3.025 
[ 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 6.7   1. 35 from 132 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 20.5   n/a 35 autocmod 2.9c
comet nuclear magnitude M2 13.8   1. 35 from 282 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 35 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 35 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2014.7   297P/2014 D1       
 2008.2   297P/2008 J2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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