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266901 (2009 WL121)
Classification: Main-belt Asteroid          SPK-ID: 2266901
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03558862282216051 4.8417e-08  
a 2.93942550053395 3.076e-08 au
q 2.834815395081607 1.3962e-07 au
i 1.140729349380264 5.8248e-06 deg
node 273.4517276985101 0.00026816 deg
peri 38.53984574178719 0.00028208 deg
M 139.1533328985145 8.7622e-05 deg
tp 2458288.986368243093
(2018-Jun-19.48636824)
0.00044851 TDB
period 1840.738573033639
5.04
2.8894e-05
7.911e-08
d
yr
n .195573670956816 3.0699e-09 deg/d
Q 3.044035605986293 3.1855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      245  
   data-arc span      7794 days (21.34 yr)  
   first obs. used      1998-09-20  
   last obs. used      2020-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:50:46  

Additional Information
 Earth MOID = 1.82047 au 
 Jupiter MOID = 2.05199 au 
 T_jup = 3.272 
[ 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 16.2   n/a MPO454984  

266901 (2009 WL121)          Discovered 2009-Nov-20 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 WL121 = 2006 BX252 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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