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11505 (1990 DW2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011505
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02230271678438741 5.8174e-08  
a 3.378014274458953 4.6303e-08 AU
q 3.302675378802077 1.954e-07 AU
i 1.958720055180487 5.9691e-06 deg
node 336.2509846757479 0.00017268 deg
peri 312.5304537530475 0.00022732 deg
M 224.6191587863878 0.00014703 deg
tp 2457853.296393598490
(2017-Apr-09.79639360)
0.00092435 JED
period 2267.726355836735
6.21
4.6626e-05
1.277e-07
d
yr
n .1587493125320973 3.264e-09 deg/d
Q 3.453353170115829 4.7336e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      13097 days (35.86 yr)  
   first obs. used      1978-03-15  
   last obs. used      2014-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52645  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:06:56  

Additional Information
 Earth MOID = 2.28809 AU 
 T_jup = 3.150 
[ 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 12.4 mag n/a PDS3 (MPC 35834)  

11505 (1990 DW2)          Discovered 1990-Feb-24 by Debehogne, H. at La Silla (809)
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 DW2 = 1978 EG10 = 1993 SF13 = 1994 WR 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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