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300811 (2007 WN21)
Classification: Main-belt Asteroid          SPK-ID: 2300811
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06241848239605682 6.3718e-08  
a 2.638074389584461 2.5922e-08 au
q 2.473409789738695 1.6503e-07 au
i 8.616781502585104 6.3285e-06 deg
node 17.44984523219802 4.6025e-05 deg
peri 77.59743897656016 7.089e-05 deg
M 293.5345793444474 5.4878e-05 deg
tp 2459289.449695101538
(2021-Mar-15.94969510)
0.00023983 TDB
period 1565.052762934158
4.28
2.3067e-05
6.315e-08
d
yr
n .2300241937690795 3.3903e-09 deg/d
Q 2.802738989430226 2.754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      9013 days (24.68 yr)  
   first obs. used      1994-11-05  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64539  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:49:54  

Additional Information
 Earth MOID = 1.5072 au 
 Jupiter MOID = 2.30492 au 
 T_jup = 3.378 
[ 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 16.8   n/a MPO450216  

300811 (2007 WN21)          Discovered 2007-Nov-17 by Spacewatch at Kitt Peak
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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