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26891 Johnbutler (1995 CC2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2026891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04444835701682007 3.725e-08  
a 1.933305052734153 6.3485e-09 au
q 1.847372819527804 7.2379e-08 au
i 17.12019545031085 5.5219e-06 deg
node 292.1479967942224 1.6712e-05 deg
peri 291.8222608043672 7.7525e-05 deg
M 316.2973418073507 7.5718e-05 deg
tp 2458719.693990175668
(2019-Aug-24.19399018)
0.00020638 TDB
period 981.8587298302534
2.69
4.8363e-06
1.324e-08
d
yr
n .3666515243615931 1.806e-09 deg/d
Q 2.019237285940503 6.6307e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      13435 days (36.78 yr)  
   first obs. used      1982-07-27  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46194  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:26:18  

Additional Information
 Earth MOID = .868367 au 
 Jupiter MOID = 3.1128 au 
 T_jup = 3.855 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO426067  

26891 Johnbutler           Discovered 1995 Feb. 7 by D. J. Asher at Siding Spring.
Christopher John Butler (b. 1940) has worked on cool stars, the effects of solar variability on climate, and preserving Armagh Observatory's scientific heritage for future generations. He is well known for his active involvement in the community of Armagh and for discovering an exceptional flare on HD 6090 ("Butler's star").
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

Alternate Designations
 1995 CC2 = 1999 XN174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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