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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05087980796414407 2.0385e-08  
a 2.40094041301701 7.5567e-09 au
q 2.278781025869351 4.9896e-08 au
i 3.765948168588097 1.3205e-06 deg
node 103.8302917051235 9.1443e-06 deg
peri 82.67140603633375 2.2842e-05 deg
M 288.8126468167796 2.1477e-05 deg
tp 2459469.201966306005
(2021-Sep-11.70196631)
8.1387e-05 TDB
period 1358.846811191214
3.72
6.4152e-06
1.756e-08
d
yr
n .2649305256744953 1.2508e-09 deg/d
Q 2.523099800164668 7.9412e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2183  
   data-arc span      12027 days (32.93 yr)  
   first obs. used      1988-04-09  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:12:20  

Additional Information
 Earth MOID = 1.28255 au 
 Jupiter MOID = 2.43577 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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