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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02230268369400701 5.047e-08  
a 3.378014243828654 3.7151e-08 AU
q 3.302675460634693 1.8214e-07 AU
i 1.958720041482071 5.9605e-06 deg
node 336.2511075734901 0.00014568 deg
peri 312.5303739385298 0.00020634 deg
M 224.6191230216375 0.00014656 deg
tp 2457853.296607290073
(2017-Apr-09.79660729)
0.00092235 JED
period 2267.726324992666
6.21
3.7411e-05
1.024e-07
d
yr
n .1587493146912974 2.6189e-09 deg/d
Q 3.453353027022614 3.798e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1205  
   data-arc span      13527 days (37.03 yr)  
   first obs. used      1978-03-15  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51956  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:41:26  

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
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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