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212139 (2005 EF253)
Classification: Main-belt Asteroid          SPK-ID: 2212139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1041265661356319 5.992e-08  
a 2.567945726941942 1.9392e-08 au
q 2.300554356372808 1.5358e-07 au
i 11.89922394754679 3.8768e-06 deg
node 106.8490981511169 3.2679e-05 deg
peri 22.83274394548172 4.8494e-05 deg
M 305.212279191087 3.5797e-05 deg
tp 2459229.248324253328
(2021-Jan-14.74832425)
0.00014953 TDB
period 1503.063013305734
4.12
1.7025e-05
4.661e-08
d
yr
n .2395109165837569 2.713e-09 deg/d
Q 2.835337097511075 2.1411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      10277 days (28.14 yr)  
   first obs. used      1991-12-07  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62474  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:42:33  

Additional Information
 Earth MOID = 1.32039 au 
 Jupiter MOID = 2.24661 au 
 T_jup = 3.394 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO494172  
diameter diameter 4.046 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212139 (2005 EF253)          Discovered 2005-Mar-10 by CSS at Catalina
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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