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38237 Roche (1999 OF)
Classification: Main-belt Asteroid          SPK-ID: 2038237
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1627919560661338 6.8775e-08  
a 2.378561076867827 1.7108e-08 AU
q 1.991350466541744 1.6771e-07 AU
i 1.498808673920444 6.321e-06 deg
node 290.9111011201458 0.00028512 deg
peri 295.5920349416381 0.00028597 deg
M 132.5602724520501 2.4198e-05 deg
tp 2456507.120868965687
(2013-Aug-02.62086897)
8.8321e-05 JED
period 1339.892291158352
3.67
1.4456e-05
3.958e-08
d
yr
n .2686783127088342 2.8988e-09 deg/d
Q 2.76577168719391 1.9893e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      12498 days (34.22 yr)  
   first obs. used      1980-03-23  
   last obs. used      2014-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57929  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:17:24  

Additional Information
 Earth MOID = .9839 AU 
 T_jup = 3.521 
[ 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 15.6 mag n/a MPO299228  

38237 Roche           Discovered 1999 July 16 at Pises.
Astronomer and mathematician Edouard Roche (1820-1883), of the University of Montpellier, was known for his work on the sun, comets, celestial mechanics and, most notably, for the "Roche limit".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Alternate Designations
 1999 OF = 1980 FS8 = 1997 XW7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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