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9738 (1987 DF6)
Classification: Main-belt Asteroid          SPK-ID: 2009738
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1217300258639451 7.3257e-08  
a 2.667154745488648 2.1519e-08 AU
q 2.342481929337171 1.9622e-07 AU
i 12.52009463111273 1.0098e-05 deg
node 329.9568035521906 2.9758e-05 deg
peri 250.187093600549 5.3428e-05 deg
M 39.77279888284443 4.7115e-05 deg
tp 2456624.726095124227
(2013-Nov-28.22609512)
0.00020805 JED
period 1591.002080132027
4.36
1.9254e-05
5.271e-08
d
yr
n .2262724885753297 2.7383e-09 deg/d
Q 2.991827561640125 2.4138e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      937  
   data-arc span      12260 days (33.57 yr)  
   first obs. used      1980-09-13  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5054  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:57:12  

Additional Information
 Earth MOID = 1.37155 AU 
 T_jup = 3.338 
[ 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 12.9 mag n/a MPO266010  

9738 (1987 DF6)          Discovered 1987-Feb-23 by Debehogne, H. at La Silla (809)
Reference: 19981208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1987 DF6 = 1980 RR7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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