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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1930292936502037 7.7759e-08  
a 2.636797893971445 2.5518e-08 AU
q 2.127818658999792 2.016e-07 AU
i 13.31999858305281 6.2001e-06 deg
node 97.6183599473467 3.3111e-05 deg
peri 267.556238028529 3.7192e-05 deg
M 200.2584983518519 1.7706e-05 deg
tp 2457694.451235822140
(2016-Nov-01.95123582)
7.876e-05 JED
period 1563.91696784119
4.28
2.2702e-05
6.215e-08
d
yr
n .2301912488979125 3.3415e-09 deg/d
Q 3.145777128943099 3.0443e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      21614 days (59.18 yr)  
   first obs. used      1955-04-20  
   last obs. used      2014-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48989  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:37:44  

Additional Information
 Earth MOID = 1.17537 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 12.7 mag n/a MPO257027  

22476 (1997 EM23)          Discovered 1997-Mar-08 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
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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