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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2036829597779699 7.3744e-08  
a 2.653872304466743 2.7945e-08 au
q 2.113323738620175 2.0682e-07 au
i 12.24435732522426 5.8673e-06 deg
node 120.52604725319 3.0328e-05 deg
peri 76.48242197044497 3.4246e-05 deg
M 270.6365063873026 2.4118e-05 deg
tp 2457792.491002255812
(2017-Feb-07.99100226)
0.00011026 JED
period 1579.1320941826
4.32
2.4942e-05
6.829e-08
d
yr
n .2279733287203852 3.6008e-09 deg/d
Q 3.194420870313311 3.3637e-08 au
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      9015 days (24.68 yr)  
   first obs. used      1991-04-15  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5222  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:15:05  

Additional Information
 Earth MOID = 1.15217 au 
 Jupiter MOID = 1.90367 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 13.7 mag n/a MPO229256  

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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