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9747 (1989 AT)
Classification: Main-belt Asteroid          SPK-ID: 2009747
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208011673122005 7.7225e-08  
a 3.026038732752133 3.2387e-08 AU
q 2.660489721503744 2.4349e-07 AU
i 13.26923977956335 8.0828e-06 deg
node 100.0029679052477 3.9742e-05 deg
peri 357.1333813252332 5.638e-05 deg
M 335.1667275126707 3.8747e-05 deg
tp 2457133.129949405192
(2015-Apr-20.62994941)
0.00020745 JED
period 1922.693910366863
5.26
3.0867e-05
8.451e-08
d
yr
n .1872372914164531 3.006e-09 deg/d
Q 3.391587744000523 3.63e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      9404 days (25.75 yr)  
   first obs. used      1989-01-04  
   last obs. used      2014-10-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49514  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:16:04  

Additional Information
 Earth MOID = 1.67721 AU 
 T_jup = 3.193 
[ 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 12.9 mag n/a MPO267746  

9747 (1989 AT)          Discovered 1989-Jan-04 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19981208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 AT = 1994 AA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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