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 ]  
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1787504598081623 4.306e-08  
a 3.13950905193895 2.0372e-08 au
q 2.578320365332975 1.3297e-07 au
i 1.330428714036374 5.6282e-06 deg
node 20.81701418578069 0.00021273 deg
peri 43.23346692907634 0.00021333 deg
M 183.8277271435226 1.6896e-05 deg
tp 2458594.819811794892
(2019-Apr-21.31981179)
9.8703e-05 JED
period 2031.847159840965
5.56
1.9777e-05
5.415e-08
d
yr
n .1771786811111214 1.7246e-09 deg/d
Q 3.700697738544926 2.4014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1474  
   data-arc span      31551 days (86.38 yr)  
   first obs. used      1929-11-27  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51416  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:41:08  

Additional Information
 Earth MOID = 1.59026 au 
 Jupiter MOID = 1.63227 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. 2016-February); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-May-07 00:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin