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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08154407290820767 3.1892e-08  
a 2.457927183465175 9.2676e-09 au
q 2.257497790013625 7.7063e-08 au
i 5.562362034996499 5.326e-06 deg
node 138.2713924474849 3.6744e-05 deg
peri 121.8602134259735 4.9669e-05 deg
M 189.1204613783413 3.3061e-05 deg
tp 2459868.596978870499
(2022-Oct-16.09697887)
0.00012932 TDB
period 1407.511480504985
3.85
7.9605e-06
2.179e-08
d
yr
n .2557705603018169 1.4466e-09 deg/d
Q 2.658356576916725 1.0023e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      17320 days (47.42 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:27:21  

Additional Information
 Earth MOID = 1.24616 au 
 Jupiter MOID = 2.38845 au 
 T_jup = 3.481 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.14   n/a MPCxxxxx  
diameter diameter 5.327 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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