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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2532527210795187 1.3048e-07  
a 2.332221557587546 2.0646e-08 AU
q 1.741580101968187 2.9769e-07 AU
i 21.85523125116216 1.3803e-05 deg
node 332.2376999068206 1.9917e-05 deg
peri 56.8905252730783 3.2434e-05 deg
M 203.4362337027033 2.4681e-05 deg
tp 2457366.272578246201
(2015-Dec-09.77257825)
9.2688e-05 JED
period 1300.927621924161
3.56
1.7275e-05
4.73e-08
d
yr
n .2767256178845179 3.6746e-09 deg/d
Q 2.922863013206906 2.5875e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      532  
   data-arc span      13958 days (38.21 yr)  
   first obs. used      1975-03-14  
   last obs. used      2013-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5676  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Oct-22 19:17:19  

Additional Information
 Earth MOID = .815382 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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