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117557 (2005 EG22)
Classification: Main-belt Asteroid          SPK-ID: 2117557
[ 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 .1076589405580281 6.4732e-08  
a 3.090726247080412 3.4298e-08 au
q 2.757981933764844 2.0332e-07 au
i 5.12658307781032 6.8533e-06 deg
node 152.2507825247378 7.5542e-05 deg
peri 97.30148264589681 8.5872e-05 deg
M 216.8852463695916 4.5915e-05 deg
tp 2459789.489355043759
(2022-Jul-28.98935504)		 0.00025983 TDB
period 1984.674260413934
5.43		 3.3036e-05
9.045e-08		 d
yr
n .1813899677042803 3.0193e-09 deg/d
Q 3.423470560395979 3.799e-08 au
   Orbit Determination Parameters
   # obs. used (total)      396  
   data-arc span      8536 days (23.37 yr)  
   first obs. used      1996-09-14  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60014  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:47:38  

Additional Information
 Earth MOID = 1.75016 au 
 Jupiter MOID = 1.62591 au 
 T_jup = 3.210 
[ 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 15.1   n/a MPO453646  
diameter diameter 4.266 km 0.624 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.097   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117557 (2005 EG22)          Discovered 2005-Mar-03 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2005 EG22 = 1996 RD18 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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