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216516 (2000 WQ21)
Classification: Main-belt Asteroid          SPK-ID: 2216516
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106900400979143 4.6233e-08  
a 2.291871506566039 1.3091e-08 au
q 2.046869523521457 1.0894e-07 au
i 5.794809818689376 4.8909e-06 deg
node 237.0889965998512 6.0256e-05 deg
peri 175.6730901327078 6.7114e-05 deg
M 290.9193911182293 3.0559e-05 deg
tp 2459443.685390503374
(2021-Aug-17.18539050)
0.00010834 TDB
period 1267.312810329279
3.47
1.0858e-05
2.973e-08
d
yr
n .284065620631155 2.4338e-09 deg/d
Q 2.536873489610621 1.449e-08 au
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      7764 days (21.26 yr)  
   first obs. used      1998-01-27  
   last obs. used      2019-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54159  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:09  

Additional Information
 Earth MOID = 1.05717 au 
 Jupiter MOID = 2.76996 au 
 T_jup = 3.583 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.57   n/a MPCxxxxx  

216516 (2000 WQ21)          Discovered 2000-Nov-26 by Needville at Needville
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

Alternate Designations
 2000 WQ21 = 2007 RF274 = 2007 XX6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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