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212142 (2005 EN277)
Classification: Main-belt Asteroid          SPK-ID: 2212142
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549783872572294 7.4962e-08  
a 2.45642662260769 2.1444e-08 au
q 2.075733586220228 1.7771e-07 au
i 9.255492881824351 6.9687e-06 deg
node 61.20415620358023 3.3781e-05 deg
peri 163.4405294371487 3.7261e-05 deg
M 294.0444573486316 1.5604e-05 deg
tp 2459258.133846339198
(2021-Feb-12.63384634)
6.2249e-05 TDB
period 1406.222751776372
3.85
1.8414e-05
5.041e-08
d
yr
n .2560049604838493 3.3522e-09 deg/d
Q 2.837119658995153 2.4767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      6895 days (18.88 yr)  
   first obs. used      2001-02-16  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63505  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 00:55:12  

Additional Information
 Earth MOID = 1.0678 au 
 Jupiter MOID = 2.14895 au 
 T_jup = 3.458 
[ 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 16.5   n/a MPO264515  
diameter diameter 2.964 km 0.872 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

212142 (2005 EN277)          Discovered 2005-Mar-09 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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