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85P/Boethin
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000004
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454252.5 (2007-Jun-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.7811606261503803994017 0.00022404  
a 5.1848871265672986652361 0.019708 au
q 1.1346574522589409905748 0.0054744 au
i 4.2952945910302675613934 0.016338 deg
node 359.3961137217372 1.1096 deg
peri 37.61838460810365 1.2758 deg
M 313.1875107575854 0.4319 deg
tp 2454813.246563731727
(2008-Dec-12.74656373)
8.3706 TDB
period 4312.284311523383
11.81
24.586
0.06731
d
yr
n .08348243622017221 0.00047597 deg/d
Q 9.235116800875655 0.035102 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 0 3.862E-9
A2 [EST] 0 5.669E-9
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      4042 days (11.07 yr)  
   first obs. used      1975-02-05  
   last obs. used      1986-03-01  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      8  
   norm. resid. RMS      1.6569  
   source      ORB  
   producer      Steven R. Chesley  
   solution date      2007-Sep-25 13:47:46  

Additional Information
 Earth MOID = .149899 au 
 T_jup = 2.247 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Discovery Circumstances | Close-Approach Data ]

no physical parameters available

85P/Boethin          Discovered 1975-Jan-04 by Boethin, Leo at Bangued, The Philippines
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1985.3   85P/1985 T2   1986 I   1985n 
 1973.5   85P/1975 A1   1975 I   1975a 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Discovery Circumstances | Close-Approach Data ]
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