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117558 (2005 EN23)
Classification: Main-belt Asteroid          SPK-ID: 2117558
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1109997797453945 3.977e-08  
a 2.348762954287167 1.2067e-08 au
q 2.088050783687149 9.0521e-08 au
i 12.5579759077658 4.3515e-06 deg
node 169.8652268399429 1.6452e-05 deg
peri 31.92516335913716 2.332e-05 deg
M 54.89063239416922 1.6583e-05 deg
tp 2458800.028360093049
(2019-Nov-12.52836009)
6.0231e-05 TDB
period 1314.792474028206
3.60
1.0133e-05
2.774e-08
d
yr
n .273807469324073 2.1101e-09 deg/d
Q 2.609475124887185 1.3407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      808  
   data-arc span      8163 days (22.35 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:59:47  

Additional Information
 Earth MOID = 1.09715 au 
 Jupiter MOID = 2.35963 au 
 T_jup = 3.519 
[ 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 16.0   n/a MPO432680  

117558 (2005 EN23)          Discovered 2005-Mar-03 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2005 EN23 = 1998 HP104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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