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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02163604518073181 5.7474e-08  
a 3.382530757241165 4.5296e-08 AU
q 3.30934616895228 1.9196e-07 AU
i 1.956902353753868 5.9579e-06 deg
node 336.276063649807 0.00017303 deg
peri 308.320930465111 0.00023166 deg
M 197.2086134496206 0.00015347 deg
tp 2457828.019280528555
(2017-Mar-15.51928053)
0.00096704 JED
period 2272.275879140594
6.22
4.5642e-05
1.25e-07
d
yr
n .158431466577094 3.1823e-09 deg/d
Q 3.45571534553005 4.6276e-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 = 2.29285 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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