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123931 (2001 ED8)
Classification: Main-belt Asteroid          SPK-ID: 2123931
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04633858141103361 4.0729e-08  
a 3.102003680900657 3.2277e-08 au
q 2.958261230795916 1.2475e-07 au
i 10.64907766875191 6.8245e-06 deg
node 16.29557317845683 2.8417e-05 deg
peri 222.9664522420038 8.7389e-05 deg
M 124.6705450008434 8.2508e-05 deg
tp 2458309.428079201857
(2018-Jul-09.92807920)
0.00045839 TDB
period 1995.546674522425
5.46
3.1146e-05
8.527e-08
d
yr
n .1804016937294415 2.8157e-09 deg/d
Q 3.245746131005398 3.3773e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      7265 days (19.89 yr)  
   first obs. used      1999-12-12  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55864  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 11:27:56  

Additional Information
 Earth MOID = 1.95776 au 
 Jupiter MOID = 1.75117 au 
 T_jup = 3.193 
[ 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 14.5   n/a MPO432733  

123931 (2001 ED8)          Discovered 2001-Mar-02 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2001 ED8 = 1999 XG220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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