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12448 Mr. Tompkins (1996 XW18)
Classification: Main-belt Asteroid          SPK-ID: 2012448
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306998161585152 6.5046e-08  
a 2.296399829277628 1.7812e-08 AU
q 1.996260793764596 1.4861e-07 AU
i 7.771053837257187 7.7509e-06 deg
node 115.2997505420361 4.0687e-05 deg
peri 192.4598654849071 4.7966e-05 deg
M 223.7651292216516 3.0012e-05 deg
tp 2457481.511510542533
(2016-Apr-03.01151054)
0.00010872 JED
period 1271.070635630775
3.48
1.4788e-05
4.049e-08
d
yr
n .2832258018621823 3.2952e-09 deg/d
Q 2.596538864790659 2.014e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      923  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1991-06-15  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54046  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:22:35  

Additional Information
 Earth MOID = .983048 AU 
 T_jup = 3.571 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO250335  

12448 Mr. Tompkins           Discovered 1996 Dec. 12 by M. Tichy and Z. Moravec at Klet.
Mr. Tompkins is the bank clerk well known from George Gamow's popular books Mr. Tompkins in Wonderland and Mr. Tompkins Explores the Atom. His fantastic dreams and adventures help explain Einstein's theory of relativity, cosmology, atomic structure and quantum theory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1996 XW18 = 1995 QD10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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