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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02230268591191692 5.0081e-08  
a 3.378014245587335 3.6749e-08 AU
q 3.30267545486202 1.8146e-07 AU
i 1.958720026568496 5.9491e-06 deg
node 336.2511066771474 0.00014336 deg
peri 312.5303747705438 0.00020467 deg
M 224.6191226663292 0.00014655 deg
tp 2457853.296610194227
(2017-Apr-09.79661019)
0.00092228 JED
period 2267.726326763621
6.21
3.7006e-05
1.013e-07
d
yr
n .1587493145673239 2.5905e-09 deg/d
Q 3.453353036312651 3.7569e-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 = 2.28809 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 12.5 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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