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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208011659890622 7.8795e-08  
a 3.026038734613654 3.6095e-08 AU
q 2.660489727144258 2.4579e-07 AU
i 13.26923566771118 8.5584e-06 deg
node 100.002949827798 4.1452e-05 deg
peri 357.1334015611715 5.8935e-05 deg
M 335.166724258917 4.244e-05 deg
tp 2457133.129966905277
(2015-Apr-20.62996691)
0.00022756 JED
period 1922.693912141031
5.26
3.4402e-05
9.419e-08
d
yr
n .1872372912436796 3.3501e-09 deg/d
Q 3.39158774208305 4.0456e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      704  
   data-arc span      9376 days (25.67 yr)  
   first obs. used      1989-01-04  
   last obs. used      2014-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48701  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:36  

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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