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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 ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02295489903860896 5.0463e-08  
a 3.371556528922623 3.4995e-08 au
q 3.294162789198241 1.846e-07 au
i 1.95787006235368 5.8089e-06 deg
node 336.2295580685831 0.00014281 deg
peri 317.3231014489186 0.00019688 deg
M 315.2861717604985 0.00013582 deg
tp 2457881.355833484750
(2017-May-07.85583348)
0.00085268 JED
period 2261.22665035395
6.19
3.5205e-05
9.639e-08
d
yr
n .1592056240552663 2.4787e-09 deg/d
Q 3.448950268647005 3.5798e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1313  
   data-arc span      13911 days (38.09 yr)  
   first obs. used      1978-03-15  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51042  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:12:00  

Additional Information
 Earth MOID = 2.27812 au 
 Jupiter MOID = 1.59848 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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