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20606 Widemann (1999 RM214)
Classification: Main-belt Asteroid          SPK-ID: 2020606
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1282824977108505 7.464e-08  
a 3.073398469807317 3.0029e-08 au
q 2.679135237639728 2.284e-07 au
i 8.855787264581325 9.2414e-06 deg
node 29.53712479758541 3.9436e-05 deg
peri 295.5725295199273 5.0041e-05 deg
M 47.68575162250968 3.1338e-05 deg
tp 2457139.816907428106
(2015-Apr-27.31690743)
0.00017078 JED
period 1968.007426385677
5.39
2.8843e-05
7.897e-08
d
yr
n .1829261389837101 2.6809e-09 deg/d
Q 3.467661701974905 3.3881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      824  
   data-arc span      8649 days (23.68 yr)  
   first obs. used      1992-04-04  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53728  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:45:44  

Additional Information
 Earth MOID = 1.68112 au 
 Jupiter MOID = 1.93965 au 
 T_jup = 3.199 
[ 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 13.5 mag n/a MPO358827  
rotation period rot_per 26.0062 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.]

20606 Widemann           Discovered 1999 Sept. 5 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Thomas Widemann (b. 1961) is a planetary scientist at Paris Observatory and an associate professor at Versailles University. He is an expert in the field of stellar occultations and groundbased spectroscopy of planetary atmospheres.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

[ show close-approach data ]
Alternate Designations
 1999 RM214 = 1992 GL4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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