Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2531295089456493 1.1179e-07  
a 2.332517752274935 2.1717e-08 AU
q 1.742088679034571 2.5595e-07 AU
i 21.85515210940136 1.21e-05 deg
node 332.2330521860132 1.8756e-05 deg
peri 56.87455904383348 2.8192e-05 deg
M 258.794950822495 2.4918e-05 deg
tp 2457366.293128555575
(2015-Dec-09.79312856)
9.2819e-05 JED
period 1301.175458637858
3.56
1.8172e-05
4.975e-08
d
yr
n .2766729095681437 3.864e-09 deg/d
Q 2.9229468255153 2.7215e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      14308 days (39.17 yr)  
   first obs. used      1975-03-14  
   last obs. used      2014-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55873  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:43:48  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-20 22:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin