Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1416284753226441 3.4088e-08  
a 2.881968237005812 1.4584e-08 AU
q 2.473799469670391 9.4327e-08 AU
i 14.32371882942119 3.9586e-06 deg
node 209.8321083163959 1.8931e-05 deg
peri 174.3169074890533 2.5017e-05 deg
M 160.671811036648 1.8347e-05 deg
tp 2456002.928916270664
(2012-Mar-16.42891627)
8.8321e-05 JED
period 1787.031516543185
4.89
1.3565e-05
3.714e-08
d
yr
n .2014513995233729 1.5292e-09 deg/d
Q 3.290137004341233 1.665e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1264  
   data-arc span      43669 days (119.56 yr)  
   first obs. used      1894-11-22  
   last obs. used      2014-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52979  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:54:48  

Additional Information
 Earth MOID = 1.47701 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. 2013-Sep-12) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-24 00:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin