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192450 (1997 WY21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2192450
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05728759163296283 1.3917e-07  
a 3.252779252232851 7.1705e-08 au
q 3.066435362758761 4.8458e-07 au
i 23.24535691611692 1.4779e-05 deg
node 55.22923565502536 2.2561e-05 deg
peri 317.3784063056155 8.6461e-05 deg
M 99.284993301805 8.3152e-05 deg
tp 2457009.535458276221
(2014-Dec-18.03545828)
0.00049569 JED
period 2142.793467023306
5.87
7.0854e-05
1.94e-07
d
yr
n .1680049923337219 5.5553e-09 deg/d
Q 3.439123141706942 7.5813e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      6643 days (18.19 yr)  
   first obs. used      1997-11-06  
   last obs. used      2016-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63949  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 09:25:43  

Additional Information
 Earth MOID = 2.09861 au 
 Jupiter MOID = 1.89867 au 
 T_jup = 3.050 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4 mag n/a MPO360002  

192450 (1997 WY21)          Discovered 1997-Nov-23 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1997 WY21 = 2003 UY267 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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