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30840 Jackalice (1991 GC2)
Classification: Main-belt Asteroid          SPK-ID: 2030840
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2037908185124087 7.3048e-08  
a 2.654267392514361 2.6332e-08 au
q 2.113352068043063 2.0586e-07 au
i 12.24385325164025 5.6329e-06 deg
node 120.5257839586397 2.7742e-05 deg
peri 76.45371970768373 3.2052e-05 deg
M 316.2648123437722 2.4382e-05 deg
tp 2457792.386282055731
(2017-Feb-07.88628206)
0.00010905 JED
period 1579.484740823478
4.32
2.3505e-05
6.435e-08
d
yr
n .2279224298250016 3.3918e-09 deg/d
Q 3.195182716985659 3.1699e-08 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      9098 days (24.91 yr)  
   first obs. used      1991-04-15  
   last obs. used      2016-03-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52683  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 17:05:06  

Additional Information
 Earth MOID = 1.15184 au 
 Jupiter MOID = 1.90311 au 
 T_jup = 3.327 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO365618  

30840 Jackalice           Discovered 1991 Apr. 15 by C. S. Shoemaker and D. H. Levy at Palomar.
Jack Newton (b. 1942) is a Canadian astrophotographer credited with some of the most famous ground-based photographs ever taken. His work, from the sun to a gravitational lens, has appeared in major news magazines. His wife Alice has long assisted him in every one of his outreach efforts, in both Canada and the U.S.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

[ show close-approach data ]
Alternate Designations
 1991 GC2 = 1999 BJ24 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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