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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1405811377169042 3.0355e-08  
a 2.884319822239238 9.6641e-09 au
q 2.478838860089427 8.6989e-08 au
i 14.31469573321257 3.4604e-06 deg
node 209.8022873970215 1.3858e-05 deg
peri 173.6257667087016 1.9542e-05 deg
M 244.419879284185 1.6107e-05 deg
tp 2459574.939362765222
(2021-Dec-26.43936277)
8.1625e-05 TDB
period 1789.219195435428
4.90
8.9923e-06
2.462e-08
d
yr
n .201205084831649 1.0112e-09 deg/d
Q 3.289800784389048 1.1023e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2811  
   data-arc span      45911 days (125.70 yr)  
   first obs. used      1894-11-22  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:15:20  

Additional Information
 Earth MOID = 1.48336 au 
 Jupiter MOID = 2.16306 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-August); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2103-Feb-20 14:04 00:01 Psych 0.0282521861384679 0.028247599938083 0.028256773934305 3.49035979182043 3.49035966912429 2489215.086017768 1.07054440429784 406.122281631534 20.5629224255844 -55.8748519203282 170042.013826512 T 47 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15
2105-Jun-19 18:48 00:02 Psych 0.0482507745264895 0.0482480136737798 0.0482535378269335 4.55344924575558 4.55344919068643 2490065.283623334 1.51212797486401 564.22336431651 19.6856562849701 -76.0196323913298 355574.224491713 T 47 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15

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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