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10979 Fristephenson (4171 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2010979
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08156005732265618 5.8873e-08  
a 2.457478867009065 1.7224e-08 AU
q 2.25704674974659 1.4809e-07 AU
i 5.561577082557669 7.5743e-06 deg
node 138.3271614287752 5.6014e-05 deg
peri 122.3957933785165 7.3799e-05 deg
M 345.7603042974828 4.7738e-05 deg
tp 2457056.158477523198
(2015-Feb-02.65847752)
0.00018653 JED
period 1407.126411051686
3.85
1.4793e-05
4.05e-08
d
yr
n .25584055360807 2.6897e-09 deg/d
Q 2.657910984271541 1.8629e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      14835 days (40.62 yr)  
   first obs. used      1973-09-19  
   last obs. used      2014-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54009  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:58:13  

Additional Information
 Earth MOID = 1.24881 AU 
 T_jup = 3.481 
[ 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 15.0 mag n/a MPO247464  

10979 Fristephenson           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar plates taken by T. Gehrels.
F. Richard Stephenson (b. 1941), professorial fellow at the University of Durham, is known for his use of ancient and medieval astronomical records to improve our knowledge of the earth's rotation, supernovae and comets. The name was suggested by the object's identifier, D. W. E. Green, with the encouragement of the discoverers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

[ show close-approach data ]
Alternate Designations
 4171 T-2 = 4386 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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