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16826 Daisuke (1997 WA2)
Classification: Main-belt Asteroid          SPK-ID: 2016826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234591830000237 2.8735e-08  
a 2.286662731349144 6.7761e-09 au
q 2.004353218740176 6.7689e-08 au
i 3.584384719750215 2.9702e-06 deg
node 122.4590877926408 5.7341e-05 deg
peri 138.3346080483245 5.9745e-05 deg
M 13.79292278553178 1.8206e-05 deg
tp 2459152.110024587058
(2020-Oct-29.61002459)
6.3831e-05 TDB
period 1262.994901046814
3.46
5.6139e-06
1.537e-08
d
yr
n .2850367801973067 1.267e-09 deg/d
Q 2.568972243958112 7.6126e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1899  
   data-arc span      10889 days (29.81 yr)  
   first obs. used      1990-10-19  
   last obs. used      2020-08-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:43:18  

Additional Information
 Earth MOID = .988823 au 
 Jupiter MOID = 2.48272 au 
 T_jup = 3.589 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO492936  
diameter diameter 3.023 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.336   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16826 Daisuke           Discovered 1997 Nov. 19 by N. Sato at Chichibu.
Daisuke Miyajima (1958-2007) was a Japanese aerospace engineer who contributed much to the success of `KAGUYA' as a lead engineer of EMC design, control and verification tests that reduced the EMC noise and provided a quiet environment for mission sensors that needed to hear even a tiny voice from the moon.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20101128/MPCPages.arcLast Updated: 2010-12-06

[ show close-approach data ]
Alternate Designations
 1997 WA2 = 1992 CO8 = 1996 KQ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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