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249417 (2009 DQ90)
Classification: Main-belt Asteroid          SPK-ID: 2249417
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06515097552581783 4.4587e-08  
a 2.413950177831505 2.1313e-08 au
q 2.256678968875061 1.1585e-07 au
i 4.932419563485293 6.5281e-06 deg
node 176.8192762495952 5.7499e-05 deg
peri 62.7071583975257 7.8717e-05 deg
M 284.2694650694226 5.5454e-05 deg
tp 2459288.677058524106
(2021-Mar-15.17705852)
0.00021226 TDB
period 1369.906354996443
3.75
1.8142e-05
4.967e-08
d
yr
n .2627916854951263 3.4803e-09 deg/d
Q 2.57122138678795 2.2701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      227  
   data-arc span      5948 days (16.28 yr)  
   first obs. used      2003-10-20  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:23:11  

Additional Information
 Earth MOID = 1.24981 au 
 Jupiter MOID = 2.4179 au 
 T_jup = 3.510 
[ 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 17.0   n/a MPO454849  
diameter diameter 2.730 km 0.534 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249417 (2009 DQ90)          Discovered 2009-Feb-26 by CSS at Catalina
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 DQ90 = 2007 TK254 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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