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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1282846185636819 7.4466e-08  
a 3.072847477926044 2.9522e-08 au
q 2.67864841131593 2.2753e-07 au
i 8.856199651824241 9.2326e-06 deg
node 29.53776853123005 3.8682e-05 deg
peri 295.4876707672947 4.9406e-05 deg
M 84.35435721857738 3.1235e-05 deg
tp 2457139.485109410131
(2015-Apr-26.98510941)
0.00016983 JED
period 1967.478220269126
5.39
2.8354e-05
7.763e-08
d
yr
n .182975341882441 2.6369e-09 deg/d
Q 3.467046544536159 3.331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      841  
   data-arc span      8712 days (23.85 yr)  
   first obs. used      1992-04-04  
   last obs. used      2016-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54395  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:38:36  

Additional Information
 Earth MOID = 1.68196 au 
 Jupiter MOID = 1.941 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. 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.]

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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