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392 Wilhelmina (1894 BF)
Classification: Main-belt Asteroid          SPK-ID: 2000392
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1415328843127293 3.407e-08  
a 2.88221351755767 1.4524e-08 AU
q 2.474285525212595 9.426e-08 AU
i 14.32298405145048 3.9545e-06 deg
node 209.8320745029566 1.8808e-05 deg
peri 174.2776933822097 2.489e-05 deg
M 201.0109553303789 1.8476e-05 deg
tp 2457789.818627234852
(2017-Feb-05.31862724)
9.4856e-05 JED
period 1787.259659274132
4.89
1.351e-05
3.699e-08
d
yr
n .2014256843609442 1.5226e-09 deg/d
Q 3.290141509902744 1.658e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1272  
   data-arc span      43701 days (119.65 yr)  
   first obs. used      1894-11-22  
   last obs. used      2014-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5289  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:35:01  

Additional Information
 Earth MOID = 1.47865 AU 
 T_jup = 3.233 
[ 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 9.70 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
diameter diameter 62.88 km 1.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 17.96 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Gil-Hutton, R.; Canada, M. (2003) Revista Mexicana de Astronomica y Astrofisica 39, 69-76.]
geometric albedo albedo 0.0589   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

392 Wilhelmina (1894 BF)          Discovered 1894-Nov-04 by Wolf, M. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1894 BF = 1931 HD = 1933 SW = 1933 UZ = 1952 ON 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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