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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1308193281360651 3.822e-08  
a 2.295768047533817 7.8576e-09 au
q 1.995437213999197 8.7968e-08 au
i 7.773057285727664 4.2339e-06 deg
node 115.2667333510232 3.317e-05 deg
peri 192.2485953484618 3.7698e-05 deg
M 70.61810000033178 1.9401e-05 deg
tp 2458751.267906605108
(2019-Sep-24.76790661)
6.8278e-05 TDB
period 1270.54612941639
3.48
6.523e-06
1.786e-08
d
yr
n .2833427229953167 1.4547e-09 deg/d
Q 2.596098881068436 8.8855e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1631  
   data-arc span      10731 days (29.38 yr)  
   first obs. used      1991-06-15  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:52:54  

Additional Information
 Earth MOID = .981128 au 
 Jupiter MOID = 2.6248 au 
 T_jup = 3.571 
[ 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 14.1   n/a MPO384866  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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