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127P/Holt-Olmstead
Classification: Jupiter-family Comet          SPK-ID: 1000127
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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:
Orbital Elements at Epoch 2455168.5 (2009-Dec-03.0) TDB
Reference: JPL K162/1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3623455624836588 1.5845e-06  
a 3.443437251363689 1.311e-05 au
q 2.195723043641129 3.8834e-06 au
i 14.32165437252401 4.1613e-05 deg
node 13.68456209223027 3.6553e-05 deg
peri 6.540056514329597 0.0008594 deg
M 6.576334654342131 0.00038936 deg
tp 2455125.864820917468
(2009-Oct-21.36482092)
0.0024652 TDB
period 2333.923876513388
6.39
0.013329
3.649e-05
d
yr
n .1542466760046168 8.809e-07 deg/d
Q 4.691151459086249 1.7861e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.095811191204703E-9 4.53E-9
A2 [EST] -1.607159112276551E-8 2.159E-9
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      2771 days (7.59 yr)  
   first obs. used      2009-06-03  
   last obs. used      2017-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .71266  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2017-Mar-09 15:49:03  

Additional Information
 Earth MOID = 1.19854 au 
 Jupiter MOID = .799549 au 
 T_jup = 2.980 
[ 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 9.5   0.8 K162/1 2 parameter fit from 99 observations, autocmod 2.6h
comet total magnitude slope K1 23.   n/a K162/1 autocmod 2.6h
comet nuclear magnitude M2 15.7   0.9 K162/1 from 385 observations, autocmod 2.6h
comet nuclear magnitude slope K2 5.   n/a K162/1 autocmod 2.6h
comet nuclear phase coefficient PC 0.03   n/a K162/1 autocmod 2.6h

127P/Holt-Olmstead          Discovered 1990-Sep-14 by Holt, Henry E. and Olmstead, C. Michelle at Palomar Mountain Observatory, California
discovered on plate/photo taken on discovery date as well as 9/17
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1997.0   127P/1996 S1       
 1990.6   127P/1990 R2   1990 XVIII   1990k 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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