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57P/duToit-Neujmin-Delporte
Classification: Jupiter-family Comet          SPK-ID: 1000023
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4992889286810742 9.8546e-08  
a 3.452538989318305 1.3064e-07 au
q 1.72872449611193 3.189e-07 au
i 2.848332280065132 2.1753e-05 deg
node 188.7994329470437 0.00019688 deg
peri 115.214272881255 0.00021692 deg
M 32.3770843557389 3.6604e-05 deg
tp 2457164.762632554045
(2015-May-22.26263255)
0.00022744 TDB
period 2343.183575364052
6.42
0.000133
3.641e-07
d
yr
n .1536371301783592 8.7204e-09 deg/d
Q 5.17635348252468 1.9587e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.600102113351381E-9 8.911E-11
A2 [EST] 3.307496160787671E-11 4.637E-13
A3 [EST] -1.209113945893137E-9 6.682E-11
  Orbit Determination Parameters
   # obs. used (total)      719  
   data-arc span      16549 days (45.31 yr)  
   first obs. used      1970-07-27  
   last obs. used      2015-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   norm. resid. RMS      .71769  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-09 11:31:49  

Additional Information
 Earth MOID = .715552 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 13.9   1. 21 2 parameter fit from 217 observations, autocmod 2.6
comet total magnitude slope K1 11.   n/a 21 autocmod 2.6

57P/duToit-Neujmin-Delporte          Discovered 1941-Jul-18 by du Toit, D. at Boyden Observatory
Reference: comet.disLast Updated: 2003-08-29

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