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305207 (2007 WS20)
Classification: Main-belt Asteroid          SPK-ID: 2305207
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01183036378017686 7.127e-08  
a 3.005506722210301 4.5952e-08 au
q 2.969950484342787 2.0314e-07 au
i 10.61060059828264 6.3902e-06 deg
node 112.1625511392542 4.3615e-05 deg
peri 37.5669222824997 0.00031463 deg
M 154.714494770674 0.00031031 deg
tp 2458382.593828731272
(2018-Sep-21.09382873)
0.0016402 TDB
period 1903.15860251611
5.21
4.3647e-05
1.195e-07
d
yr
n .1891592216875959 4.3382e-09 deg/d
Q 3.041062960077816 4.6496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      181  
   data-arc span      4217 days (11.55 yr)  
   first obs. used      2007-11-09  
   last obs. used      2019-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52689  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:54:11  

Additional Information
 Earth MOID = 1.98899 au 
 Jupiter MOID = 2.0025 au 
 T_jup = 3.225 
[ 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 16.04   n/a MPCxxxxx  

305207 (2007 WS20)          Discovered 2007-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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