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15916 Shigeoyamada (1997 UL7)
Classification: Main-belt Asteroid          SPK-ID: 2015916
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05098829569017259 3.9928e-08  
a 2.400545929906317 8.4747e-09 au
q 2.278146184214414 9.4517e-08 au
i 3.766035572411089 3.2701e-06 deg
node 103.8300355870965 6.4417e-05 deg
peri 82.83560063325754 7.2086e-05 deg
M 235.6648963790471 3.3651e-05 deg
tp 2459469.696448800363
(2021-Sep-12.19644880)
0.00012766 TDB
period 1358.511929849441
3.72
7.1939e-06
1.97e-08
d
yr
n .2649958326386561 1.4033e-09 deg/d
Q 2.522945675598221 8.9068e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1889  
   data-arc span      11893 days (32.56 yr)  
   first obs. used      1988-04-09  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48387  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:30:37  

Additional Information
 Earth MOID = 1.28253 au 
 Jupiter MOID = 2.43697 au 
 T_jup = 3.521 
[ 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 14.1   n/a MPO449066  
diameter diameter 4.468 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15916 Shigeoyamada           Discovered 1997 Oct. 25 by N. Sato at Chichibu.
Shigeo Yamada (1942-2002), an aerospace engineer at the National Space Development Agency of Japan, managed the lunar explorer KAGUYA and the engineering test satellites ETS-VII. Generous and thoughtful, he devoted himself to working on NASDA projects until the "fuel" of his life was finally exhausted.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

Alternate Designations
 1997 UL7 = 1988 GV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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