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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2529132187779541 7.6848e-08  
a 2.332410464227684 1.4927e-08 au
q 1.742513026208478 1.83e-07 au
i 21.85520858585059 1.0171e-05 deg
node 332.2309895043983 1.477e-05 deg
peri 56.86004423420711 2.5178e-05 deg
M 64.80701262882752 1.6426e-05 deg
tp 2457366.279232157856
(2015-Dec-09.77923216)
5.9277e-05 JED
period 1301.085685064656
3.56
1.249e-05
3.42e-08
d
yr
n .2766919997141543 2.6562e-09 deg/d
Q 2.92230790224689 1.8702e-08 au
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      14930 days (40.88 yr)  
   first obs. used      1975-03-14  
   last obs. used      2016-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51589  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:37:17  

Additional Information
 Earth MOID = .816432 au 
 Jupiter MOID = 2.75075 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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