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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1223465481919803 7.2639e-08  
a 2.640602911157992 1.9489e-08 au
q 2.317534259832117 1.9642e-07 au
i 9.428386985389551 6.7388e-06 deg
node 290.0133115977792 3.587e-05 deg
peri 229.8259339080575 4.498e-05 deg
M 282.5150941712969 3.1321e-05 deg
tp 2457737.839877017719
(2016-Dec-15.33987702)
0.00013791 JED
period 1567.303391900008
4.29
1.7351e-05
4.75e-08
d
yr
n .2296938817720414 2.5429e-09 deg/d
Q 2.963671562483866 2.1874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      13801 days (37.79 yr)  
   first obs. used      1978-03-06  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53833  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:57:37  

Additional Information
 Earth MOID = 1.3402 au 
 Jupiter MOID = 2.10901 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 13.0 mag n/a MPO313466  
rotation period rot_per 11.0464 h n/a LCDB (Rev. 2015-December); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

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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