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20606 Widemann (1999 RM214)
Classification: Main-belt Asteroid          SPK-ID: 2020606
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1277995153789388 4.8482e-08  
a 3.076128067539663 1.8356e-08 au
q 2.683000391264542 1.5544e-07 au
i 8.843048046611676 5.6589e-06 deg
node 29.44312270070622 2.7534e-05 deg
peri 294.4520702307033 3.3961e-05 deg
M 341.5733501703307 1.9091e-05 deg
tp 2459101.366958957649
(2020-Sep-08.86695896)
0.00010455 TDB
period 1970.629797625317
5.40
1.7639e-05
4.829e-08
d
yr
n .1826827141423587 1.6352e-09 deg/d
Q 3.469255743814783 2.0702e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1335  
   data-arc span      10351 days (28.34 yr)  
   first obs. used      1992-04-04  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51767  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:36:59  

Additional Information
 Earth MOID = 1.68694 au 
 Jupiter MOID = 1.94314 au 
 T_jup = 3.199 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5   n/a MPO358827  
diameter diameter 9.153 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 26.006 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.072   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1999 RM214 = 1992 GL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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