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9947 Takaishuji (1990 QB)
Classification: Main-belt Asteroid          SPK-ID: 2009947
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2531295564997185 1.0047e-07  
a 2.33251776002836 1.9966e-08 AU
q 1.742088573904664 2.3208e-07 AU
i 21.85515303346162 1.2074e-05 deg
node 332.2330554895298 1.855e-05 deg
peri 56.87455580584251 2.7996e-05 deg
M 258.7949434708904 2.3294e-05 deg
tp 2457366.293156950917
(2015-Dec-09.79315695)
8.6371e-05 JED
period 1301.175465125632
3.56
1.6707e-05
4.574e-08
d
yr
n .2766729081886286 3.5525e-09 deg/d
Q 2.922946946152055 2.502e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      548  
   data-arc span      14717 days (40.29 yr)  
   first obs. used      1975-03-14  
   last obs. used      2015-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56128  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:03:26  

Additional Information
 Earth MOID = .817168 AU 
 T_jup = 3.433 
[ 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 14.1 mag n/a MPO263438  

9947 Takaishuji           Discovered 1990 Aug. 17 by E. F. Helin at Palomar.
An elementary school teacher, Shuji Takai (b. 1967) is a member of the Kuroishi Subaru Association. He is a well-known lecturer at the children's astronomy club founded by Kuroishi city. Name suggested by Y. Yamada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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