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211P/Hill
Classification: Jupiter-family Comet          SPK-ID: 1003004
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455973.5 (2012-Feb-16.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .338349337441299 4.8062e-07  
a 3.562415853689197 2.4696e-07 au
q 2.357074809903078 1.5734e-06 au
i 18.87857565547379 2.0228e-05 deg
node 117.2672535239955 2.6864e-05 deg
peri 4.262574849958032 0.00030129 deg
M 148.6655247551294 0.00015976 deg
tp 2454959.301143529312
(2009-May-07.80114353)
0.0011809 TDB
period 2455.92640883508
6.72
0.00025538
6.992e-07
d
yr
n .1465841967841206 1.5242e-08 deg/d
Q 4.767756897475317 3.3052e-07 au
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      2733 days (7.48 yr)  
   first obs. used      2008-12-04  
   last obs. used      2016-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .81295  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:27:56  

Additional Information
 Earth MOID = 1.37352 au 
 Jupiter MOID = .363716 au 
 T_jup = 2.934 
[ 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 14.1   0.7 40 2 parameter fit from 248 observations, autocmod 2.9c
comet total magnitude slope K1 7.   n/a 40 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.3   211P/2008 X1       
 2002.6   211P/2003 F6       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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