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9740 (1987 ST11)
Classification: Main-belt Asteroid          SPK-ID: 2009740
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131416633829795 4.7522e-08  
a 2.360559157421953 1.3553e-08 AU
q 2.050342418997463 1.0936e-07 AU
i 5.789445975787347 5.0755e-06 deg
node 45.27210348406859 5.1225e-05 deg
peri 355.9129815553925 5.5399e-05 deg
M 153.982653162845 2.165e-05 deg
tp 2456433.882403629151
(2013-May-21.38240363)
7.7922e-05 JED
period 1324.709832592528
3.63
1.1409e-05
3.124e-08
d
yr
n .2717576265705378 2.3405e-09 deg/d
Q 2.670775895846444 1.5334e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      16133 days (44.17 yr)  
   first obs. used      1971-03-24  
   last obs. used      2015-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5002  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:06:25  

Additional Information
 Earth MOID = 1.05837 AU 
 T_jup = 3.533 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO279618  

9740 (1987 ST11)          Discovered 1987-Sep-23 by Debehogne, H. at La Silla
Reference: 19981208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1987 ST11 = 1969 UQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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