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117666 (2005 ER201)
Classification: Main-belt Asteroid          SPK-ID: 2117666
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07781643201040174 6.4358e-08  
a 3.159229274533468 3.9027e-08 au
q 2.913389324486463 2.0129e-07 au
i 24.5229827668236 9.5465e-06 deg
node 27.29885891825677 1.3344e-05 deg
peri 120.8394670165665 5.3846e-05 deg
M 265.5463031263968 5.4317e-05 deg
tp 2459538.629256980792
(2021-Nov-20.12925698)
0.00031348 TDB
period 2051.02117678176
5.62
3.8006e-05
1.041e-07
d
yr
n .1755223222828313 3.2525e-09 deg/d
Q 3.405069224580473 4.2064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      7560 days (20.70 yr)  
   first obs. used      1999-02-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58316  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:53:26  

Additional Information
 Earth MOID = 1.97578 au 
 Jupiter MOID = 1.65931 au 
 T_jup = 3.061 
[ 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 14.6   n/a MPO320351  
diameter diameter 7.136 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117666 (2005 ER201)          Discovered 2005-Mar-08 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2005 ER201 = 2000 HR99 = 2003 XB38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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