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57P/duToit-Neujmin-Delporte-A
Classification: Jupiter-family Comet          SPK-ID: 1000397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2452640.5 (2003-Jan-01.0) TDB
Reference: JPL K023/3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.499040120360139 4.4548e-07  
a 3.45215357827758 1.6677e-06 au
q 1.72939044107225 1.9646e-06 au
i 2.84481020036925 1.8998e-05 deg
node 188.9256753142995 0.00043883 deg
peri 115.2325343233014 0.00067428 deg
M 23.64084019027458 0.00013043 deg
tp 2452486.651241626438
(2002-Jul-31.15124163)
0.00083445 TDB
period 2342.79122775285
6.41
0.0016976
4.648e-06
d
yr
n .1536628598124398 1.1135e-07 deg/d
Q 5.174916715482914 2.4999e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.850173392646791E-8 7.064E-10
A2 [EST] -1.607216552946147E-10 1.652E-11
A3 [EST] -7.457258926508415E-10 1.647E-10
  Orbit Determination Parameters
   # obs. used (total)      533  
   data-arc span      4946 days (13.54 yr)  
   first obs. used      1989-05-22  
   last obs. used      2002-12-06  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      1  
   norm. resid. RMS      .70651  
   source      ORB  
   producer      M.S.W. Keesey  
   solution date      2004-Oct-08 16:55:18  

Additional Information
 Earth MOID = .714736 au 
 T_jup = 2.917 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.5   n/a IAUC 7937  
comet total magnitude slope K1 26.0   n/a IAUC 7937  
comet nuclear magnitude M2 16.   n/a ICQ 2002 Handbook  
comet nuclear magnitude slope K2 10.0   n/a ICQ 2002 Handbook  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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