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392244 (2009 WS77)
Classification: Main-belt Asteroid          SPK-ID: 2392244
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2156747414543418 8.4042e-08  
a 2.357137401059443 2.474e-08 au
q 1.848762401513589 2.0498e-07 au
i 2.329647319878394 1.5393e-05 deg
node 358.3423813197485 0.0001697 deg
peri 64.96477740342014 0.00017867 deg
M 327.406614949903 4.4839e-05 deg
tp 2459120.174808668674
(2020-Sep-27.67480867)
0.00016509 TDB
period 1321.830520349544
3.62
2.081e-05
5.697e-08
d
yr
n .2723495897982458 4.2878e-09 deg/d
Q 2.865512400605297 3.0076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      4107 days (11.24 yr)  
   first obs. used      2005-08-26  
   last obs. used      2016-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63729  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 21:23:35  

Additional Information
 Earth MOID = .863396 au 
 Jupiter MOID = 2.46512 au 
 T_jup = 3.521 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.1   n/a MPO397426  

392244 (2009 WS77)          Discovered 2009-Nov-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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