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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2031913421850145 8.4849e-08  
a 2.654894621881239 3.2012e-08 AU
q 2.115443020301413 2.3965e-07 AU
i 12.24413999738808 6.5379e-06 deg
node 120.5302524697957 3.3552e-05 deg
peri 76.46849206246931 3.7229e-05 deg
M 133.8858078662679 2.2932e-05 deg
tp 2456212.873461606471
(2012-Oct-12.37346161)
9.3929e-05 JED
period 1580.044645456174
4.33
2.8577e-05
7.824e-08
d
yr
n .2278416632310188 4.1209e-09 deg/d
Q 3.194346223461064 3.8516e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      7677 days (21.02 yr)  
   first obs. used      1991-04-15  
   last obs. used      2012-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55695  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 22:47:28  

Additional Information
 Earth MOID = 1.15481 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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