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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1522179346661724 5.2005e-08  
a 3.146258540816169 4.376e-08 au
q 2.667341563807327 1.6291e-07 au
i 4.791454639640079 7.4908e-06 deg
node 63.6810322164803 6.4107e-05 deg
peri 225.4862632725881 6.8429e-05 deg
M 211.6052104449192 2.3631e-05 deg
tp 2459440.745489033940
(2021-Aug-14.24548903)
0.00013883 TDB
period 2038.402945003277
5.58
4.2527e-05
1.164e-07
d
yr
n .1766088500227423 3.6846e-09 deg/d
Q 3.625175517825012 5.0422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      6656 days (18.22 yr)  
   first obs. used      2000-11-05  
   last obs. used      2019-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:07:01  

Additional Information
 Earth MOID = 1.65321 au 
 Jupiter MOID = 1.55522 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 15.4   n/a MPO433634  
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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