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JPL Small-Body Database Browser
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11505 (1990 DW2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011505
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02353813934021242 3.4598e-08  
a 3.374234400704539 2.2184e-08 au
q 3.294811201214217 1.1952e-07 au
i 1.956860189586561 4.4424e-06 deg
node 336.2143454935423 0.00010796 deg
peri 318.9266825456729 0.00014393 deg
M 112.8292341744758 9.4159e-05 deg
tp 2457890.954190204872
(2017-May-17.45419020)
0.00059423 TDB
period 2263.921167197203
6.20
2.2326e-05
6.113e-08
d
yr
n .1590161376712997 1.5682e-09 deg/d
Q 3.45365760019486 2.2706e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1950  
   data-arc span      15231 days (41.70 yr)  
   first obs. used      1978-03-15  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48461  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:36:19  

Additional Information
 Earth MOID = 2.27845 au 
 Jupiter MOID = 1.59906 au 
 T_jup = 3.151 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5   n/a MPO337355  
diameter diameter 16.840 km 0.564 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.94920 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.075   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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