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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2529779089491372 7.7278e-08  
a 2.332473136274617 1.5058e-08 au
q 1.742408959579828 1.8416e-07 au
i 21.85535641711702 1.034e-05 deg
node 332.231389889982 1.4774e-05 deg
peri 56.8516222045201 2.5299e-05 deg
M 9.470646563567639 1.6582e-05 deg
tp 2457366.270501888712
(2015-Dec-09.77050189)
5.9921e-05 JED
period 1301.138125824199
3.56
1.26e-05
3.45e-08
d
yr
n .2766808479860353 2.6792e-09 deg/d
Q 2.922537312969405 1.8867e-08 au
  Orbit Determination Parameters
   # obs. used (total)      787  
   data-arc span      14892 days (40.77 yr)  
   first obs. used      1975-03-14  
   last obs. used      2015-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51232  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:12:29  

Additional Information
 Earth MOID = .815677 au 
 Jupiter MOID = 2.75063 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 14.2 mag n/a MPO347605  

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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