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5784 Yoron (1991 CY)
Classification: Main-belt Asteroid          SPK-ID: 2005784
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220135263210755 8.1805e-08  
a 2.641678767417058 2.5053e-08 AU
q 2.31935822559699 2.2032e-07 AU
i 9.428523558842189 8.5809e-06 deg
node 290.0241013422518 4.1697e-05 deg
peri 229.6660641982269 5.2447e-05 deg
M 144.9049907723652 3.2133e-05 deg
tp 2456169.253071450802
(2012-Aug-29.75307145)
0.0001392 JED
period 1568.261335006069
4.29
2.2309e-05
6.108e-08
d
yr
n .2295535775602138 3.2655e-09 deg/d
Q 2.963999309237125 2.8109e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      13249 days (36.27 yr)  
   first obs. used      1978-03-06  
   last obs. used      2014-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53521  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:12:52  

Additional Information
 Earth MOID = 1.34213 AU 
 T_jup = 3.365 
[ 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 12.9 mag n/a MPO265988  

5784 Yoron           Discovered 1991 Feb. 9 by A. Natori and T. Urata at Yakiimo.
Yoron island is located in the north of Okinawa prefecture. The name was suggested by Y. Ueno, who lives on this island (latitude +27\rm o ) and succeeded in observing \alpha Crucis (declination -63\rm o ) from there in Mar. 2008 using the atmospheric refraction.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 1991 CY = 1978 EK4 = 1980 RM5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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