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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02230271442719905 5.6761e-08  
a 3.37801427218309 4.446e-08 AU
q 3.302675384539588 1.9302e-07 AU
i 1.958720245791211 5.9665e-06 deg
node 336.2510043344147 0.00016899 deg
peri 312.5304354463121 0.00022408 deg
M 224.6191579547928 0.00014673 deg
tp 2457853.296397975077
(2017-Apr-09.79639798)
0.00092278 JED
period 2267.726353544989
6.21
4.477e-05
1.226e-07
d
yr
n .1587493126925281 3.1341e-09 deg/d
Q 3.453353159826592 4.5451e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1094  
   data-arc span      13432 days (36.77 yr)  
   first obs. used      1978-03-15  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53266  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:12:31  

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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