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2803 Vilho (1940 WG)
Classification: Main-belt Asteroid          SPK-ID: 2002803
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783703892397459 4.3685e-08  
a 3.142704738056449 2.1219e-08 AU
q 2.582139270663726 1.3536e-07 AU
i 1.330528268057477 5.7336e-06 deg
node 20.82530802715096 0.00021926 deg
peri 43.57910960669923 0.00021989 deg
M 77.18108203318145 1.697e-05 deg
tp 2456564.223159448509
(2013-Sep-28.72315945)
9.523e-05 JED
period 2034.950255439724
5.57
2.061e-05
5.643e-08
d
yr
n .1769085013442794 1.7917e-09 deg/d
Q 3.703270205449171 2.5004e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1394  
   data-arc span      31218 days (85.47 yr)  
   first obs. used      1929-11-27  
   last obs. used      2015-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51361  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:41:03  

Additional Information
 Earth MOID = 1.59539 AU 
 T_jup = 3.185 
[ 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 11.9 mag n/a MPO337272  
rotation period rot_per 12.5 h n/a LCDB (Rev. 2015-May); 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:
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

2803 Vilho (1940 WG)          Discovered 1940-Nov-29 by Oterma, L. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1940 WG = 1929 XM = 1962 VE = 1973 SD5 = 1976 GF5 = 1977 KC1 = 1978 ND5 = 1979 SZ11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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