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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04888764727214101 8.3979e-08  
a 3.234730846829188 5.0637e-08 AU
q 3.076592466169088 2.8692e-07 AU
i 21.11775304441913 1.0174e-05 deg
node 232.4367010251024 2.1802e-05 deg
peri 17.17270224998506 9.3889e-05 deg
M 54.13933973788515 9.3485e-05 deg
tp 2456680.929923850877
(2014-Jan-23.42992385)
0.00054998 JED
period 2124.983939048283
5.82
4.9897e-05
1.366e-07
d
yr
n .1694130451457592 3.978e-09 deg/d
Q 3.392869227489287 5.3112e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      7167 days (19.62 yr)  
   first obs. used      1995-02-08  
   last obs. used      2014-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45449  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:22:43  

Additional Information
 Earth MOID = 2.06966 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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