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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02353813943256451 3.4573e-08  
a 3.374234400601949 2.2104e-08 au
q 3.294811200802424 1.1936e-07 au
i 1.956860262472345 4.4297e-06 deg
node 336.214346158914 0.00010792 deg
peri 318.9266825811596 0.00014362 deg
M 112.8292335024706 9.3774e-05 deg
tp 2457890.954194463251
(2017-May-17.45419446)
0.00059176 TDB
period 2263.921167093955
6.20
2.2246e-05
6.091e-08
d
yr
n .1590161376785517 1.5626e-09 deg/d
Q 3.453657600401473 2.2625e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      15239 days (41.72 yr)  
   first obs. used      1978-03-15  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48366  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:16:33  

Additional Information
 Earth MOID = 2.27845 au 
 Jupiter MOID = 1.59906 au 
 T_jup = 3.151 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456410.5 (2013-Apr-28.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0233933036571366 3.3118e-08  
q 3.296722419880628 1.1144e-07 au
tp 2455507.423990275890
(2010-Nov-06.92399028)
0.0006186 TDB
node 336.6163623082621 0.00010872 deg
peri 300.1178442527432 0.00014622 deg
i 1.951493794589517 4.4079e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      15239 days (41.72 yr)  
   first obs. used      1978-03-15  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48366  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:16:33  

Additional Information
 Jupiter MOID = 1.59906 au 
 T_jup = 3.151 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.096803249140777E-15 -3.625710183711202E-15 9.582352773024474E-13 -4.486088233381758E-15 1.446929487999568E-13 -1.827477576140682E-16
q -3.625710183711202E-15 1.241886591021746E-14 -5.581461238951289E-12 2.528998282381756E-14 -8.387630341124717E-13 7.136772406887057E-16
tp 9.582352773024474E-13 -5.581461238951289E-12 3.826637554769885E-7 1.319258759632626E-10 6.049290310122918E-8 -3.73452144401762E-12
node -4.486088233381758E-15 2.528998282381756E-14 1.319258759632626E-10 1.182022790628205E-8 -1.179251485778239E-8 6.408964222060963E-11
peri 1.446929487999568E-13 -8.387630341124717E-13 6.049290310122918E-8 -1.179251485778239E-8 2.138008145245767E-8 -6.47494373658163E-11
i -1.827477576140682E-16 7.136772406887057E-16 -3.73452144401762E-12 6.408964222060963E-11 -6.47494373658163E-11 1.9429613391346E-11

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 12.6   n/a MPO502257  
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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