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28340 Yukihiro (1999 EG5)
Classification: Main-belt Asteroid          SPK-ID: 2028340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528863627486665 5.3926e-08  
a 3.009938890047054 1.5852e-08 au
q 2.549760281052001 1.6048e-07 au
i 11.83469313005677 3.7866e-06 deg
node 80.6760903961771 2.3853e-05 deg
peri 285.4077365719776 2.6015e-05 deg
M 190.6762069036484 1.2056e-05 deg
tp 2459897.619780136782
(2022-Nov-14.11978014)
6.6667e-05 TDB
period 1907.369985891253
5.22
1.5068e-05
4.125e-08
d
yr
n .1887415670074013 1.4911e-09 deg/d
Q 3.470117499042106 1.8276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2159  
   data-arc span      8179 days (22.39 yr)  
   first obs. used      1998-01-25  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41862  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:39:45  

Additional Information
 Earth MOID = 1.58089 au 
 Jupiter MOID = 2.11738 au 
 T_jup = 3.200 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO502370  
diameter diameter 10.840 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.181   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

28340 Yukihiro           Discovered 1999 Mar. 13 by H. Abe at Yatsuka.
Yukihiro Adachi (b. 1965) is a member of Matsue Astronomy Club. He has popularized astronomy in Shimane prefecture and is an observing partner of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20071124/MPCPages.arcLast Updated: 2007-11-26

Alternate Designations
 1999 EG5 = 2000 JF57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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