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12395 Richnelson (1995 CD2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2012395
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04879693971079477 8.4341e-08  
a 3.234590341482864 5.0797e-08 AU
q 3.076752231600405 2.8843e-07 AU
i 21.11920160042215 1.0225e-05 deg
node 232.4434467091696 2.1845e-05 deg
peri 17.22478197432669 9.4484e-05 deg
M 20.20811206951021 9.4029e-05 deg
tp 2456681.224678478517
(2014-Jan-23.72467848)
0.00055429 JED
period 2124.845487793985
5.82
5.0054e-05
1.37e-07
d
yr
n .1694240838065605 3.991e-09 deg/d
Q 3.392428451365322 5.3276e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      7080 days (19.38 yr)  
   first obs. used      1995-02-08  
   last obs. used      2014-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45261  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:28:21  

Additional Information
 Earth MOID = 2.06833 AU 
 T_jup = 3.078 
[ 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 12.1 mag n/a MPO267756  

12395 Richnelson           Discovered 1995 Feb. 8 by D. J. Asher at Siding Spring.
Richard Nelson (b. 1966) is well known for his work in developing computer simulations for n -body systems and applying these to planet formation, both in our solar system and in other systems.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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