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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04909986029956477 7.1212e-08  
a 3.234355320139705 4.0288e-08 au
q 3.075548925761692 2.2867e-07 au
i 21.11989866931011 8.7364e-06 deg
node 232.4209117329098 2.1005e-05 deg
peri 17.0465137090311 9.1179e-05 deg
M 122.0270330648212 8.9926e-05 deg
tp 2456680.332411871099
(2014-Jan-22.83241187)
0.00052824 JED
period 2124.613909023619
5.82
3.9697e-05
1.087e-07
d
yr
n .1694425507011015 3.1659e-09 deg/d
Q 3.393161714517719 4.2266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      7614 days (20.85 yr)  
   first obs. used      1995-02-08  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44223  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:20:40  

Additional Information
 Earth MOID = 2.06608 au 
 Jupiter MOID = 1.61891 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. 2015-December); 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. (2015) 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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