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22476 (1997 EM23)
Classification: Main-belt Asteroid          SPK-ID: 2022476
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1930871088641802 6.6685e-08  
a 2.637666028586181 2.1509e-08 au
q 2.128366720977211 1.7801e-07 au
i 13.31854776323381 5.5923e-06 deg
node 97.61701184082301 3.0348e-05 deg
peri 267.447647376293 3.4019e-05 deg
M 338.4675821218707 1.794e-05 deg
tp 2457694.087626803919
(2016-Nov-01.58762680)
7.8281e-05 JED
period 1564.689383240691
4.28
1.9139e-05
5.24e-08
d
yr
n .2300776140337769 2.8142e-09 deg/d
Q 3.14696533619515 2.5662e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1021  
   data-arc span      22276 days (60.99 yr)  
   first obs. used      1955-04-20  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49349  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:39:05  

Additional Information
 Earth MOID = 1.17474 au 
 Jupiter MOID = 2.44799 au 
 T_jup = 3.332 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8 mag n/a MPO309330  

22476 (1997 EM23)          Discovered 1997-Mar-08 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 EM23 = 2000 YQ21 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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