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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02290592317136571 5.1423e-08  
a 3.372135537613268 3.5735e-08 au
q 3.294893660065266 1.8639e-07 au
i 1.957963220022587 5.9521e-06 deg
node 336.2380670840884 0.00014348 deg
peri 316.7701545948232 0.00020036 deg
M 283.9771806065628 0.00014042 deg
tp 2457878.136416209437
(2017-May-04.63641621)
0.00088182 JED
period 2261.809167396401
6.19
3.5953e-05
9.843e-08
d
yr
n .1591646214850216 2.53e-09 deg/d
Q 3.44937741516127 3.6553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1239  
   data-arc span      13604 days (37.25 yr)  
   first obs. used      1978-03-15  
   last obs. used      2015-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51913  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:07:08  

Additional Information
 Earth MOID = 2.27738 au 
 Jupiter MOID = 1.59655 au 
 T_jup = 3.152 
[ 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 12.5 mag n/a MPO337355  

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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