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249449 (2009 GA4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2249449
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09995302382041207 4.3236e-08  
a 3.208571248656737 4.1934e-08 au
q 2.887864850210261 1.4801e-07 au
i 4.78684478727782 4.8047e-06 deg
node 256.2918460700705 7.8936e-05 deg
peri 24.6132233536113 8.5728e-05 deg
M 264.9055526004419 3.4469e-05 deg
tp 2459555.021790034523
(2021-Dec-06.52179003)
0.00020291 TDB
period 2099.258683040161
5.75
4.1154e-05
1.127e-07
d
yr
n .1714891084688265 3.3619e-09 deg/d
Q 3.529277647103213 4.6125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      7011 days (19.20 yr)  
   first obs. used      2000-11-19  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54608  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:23:32  

Additional Information
 Earth MOID = 1.87231 au 
 Jupiter MOID = 1.58851 au 
 T_jup = 3.179 
[ 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 15.4   n/a MPO427416  
diameter diameter 5.114 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249449 (2009 GA4)          Discovered 2009-Apr-13 by Sheridan, E. at Kanab
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 GA4 = 2003 FX50 = 2006 WS28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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