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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1930382213199315 6.7698e-08  
a 2.637272866367709 2.1548e-08 au
q 2.128178403108769 1.8058e-07 au
i 13.31950078427979 5.6182e-06 deg
node 97.61891032770339 3.0746e-05 deg
peri 267.4855734008436 3.4405e-05 deg
M 292.4107360283003 1.7914e-05 deg
tp 2457694.201553075242
(2016-Nov-01.70155308)
7.8754e-05 JED
period 1564.339554745829
4.28
1.9172e-05
5.249e-08
d
yr
n .2301290655905534 2.8204e-09 deg/d
Q 3.146367329626649 2.5708e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1014  
   data-arc span      21998 days (60.23 yr)  
   first obs. used      1955-04-20  
   last obs. used      2015-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48993  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 14:09:59  

Additional Information
 Earth MOID = 1.17388 au 
 Jupiter MOID = 2.44836 au 
 T_jup = 3.333 
[ 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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