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JPL Small-Body Database Browser
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392 Wilhelmina (A894 VD)
Classification: Main-belt Asteroid          SPK-ID: 2000392
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1411717971530496 3.3753e-08  
a 2.882277022615154 1.1217e-08 au
q 2.475380795439632 9.4881e-08 au
i 14.32198292965596 3.7005e-06 deg
node 209.815970407689 1.5132e-05 deg
peri 173.8449154602753 2.0655e-05 deg
M 163.6239813737024 1.6062e-05 deg
tp 2457788.143871139885
(2017-Feb-03.64387114)
7.7794e-05 TDB
period 1787.31872879756
4.89
1.0434e-05
2.857e-08
d
yr
n .2014190273954072 1.1758e-09 deg/d
Q 3.289173249790676 1.2801e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2318  
   data-arc span      45460 days (124.46 yr)  
   first obs. used      1894-11-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43152  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:06:51  

Additional Information
 Earth MOID = 1.4792 au 
 Jupiter MOID = 2.16076 au 
 T_jup = 3.233 
[ 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 9.8   n/a MPO347514  
diameter diameter 60.750 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.058 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2017) Minor Planet Bull. 44, 9.]
geometric albedo albedo 0.173   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
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 (A894 VD)          Discovered 1894-Nov-04 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A894 VD = 1931 HD = 1933 SW = 1933 UZ = 1952 ON 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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