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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04926795008078105 7.1122e-08  
a 3.23390429183998 4.0222e-08 au
q 3.074576456623585 2.2815e-07 au
i 21.1225049707076 8.7244e-06 deg
node 232.4181442326794 2.0955e-05 deg
peri 17.01571732858266 9.0831e-05 deg
M 155.9426692799499 8.9725e-05 deg
tp 2456680.364823513365
(2014-Jan-22.86482351)
0.0005262 JED
period 2124.169510915116
5.82
3.9629e-05
1.085e-07
d
yr
n .1694779998254037 3.1619e-09 deg/d
Q 3.393232127056376 4.2204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      920  
   data-arc span      7633 days (20.90 yr)  
   first obs. used      1995-02-08  
   last obs. used      2016-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44663  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:49:47  

Additional Information
 Earth MOID = 2.06582 au 
 Jupiter MOID = 1.61981 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 12.2 mag n/a MPO347623  
rotation period rot_per 5.248 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

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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