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249429 (2009 EG23)
Classification: Main-belt Asteroid          SPK-ID: 2249429
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1525787909948345 4.4003e-08  
a 3.144657977517737 3.7586e-08 au
q 2.664849865215819 1.4761e-07 au
i 4.791707718661899 5.8588e-06 deg
node 63.67146787749323 6.1635e-05 deg
peri 225.6851732511682 6.5202e-05 deg
M 317.4460655868397 2.3352e-05 deg
tp 2459441.266340468605
(2021-Aug-14.76634047)
0.00013421 TDB
period 2036.847679632937
5.58
3.6517e-05
9.998e-08
d
yr
n .176743702339527 3.1687e-09 deg/d
Q 3.624466089819655 4.332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      7132 days (19.53 yr)  
   first obs. used      2000-11-05  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58177  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 02:07:27  

Additional Information
 Earth MOID = 1.64945 au 
 Jupiter MOID = 1.55744 au 
 T_jup = 3.186 
[ 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 15.62   n/a E2021B55  
diameter diameter 3.874 km 0.903 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249429 (2009 EG23)          Discovered 2009-Mar-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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