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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03549274599685351 4.8871e-08  
a 2.938464500252444 3.1263e-08 au
q 2.834170326124213 1.4178e-07 au
i 1.140689887311473 5.8416e-06 deg
node 273.4541326103185 0.00027436 deg
peri 37.96111230559171 0.00028811 deg
M 61.5009409242756 8.7983e-05 deg
tp 2458286.189884029226
(2018-Jun-16.68988403)
0.00044994 TDB
period 1839.835944767073
5.04
2.9362e-05
8.039e-08
d
yr
n .1956696199049295 3.1227e-09 deg/d
Q 3.042758674380675 3.2373e-08 au
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      7745 days (21.20 yr)  
   first obs. used      1998-09-20  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61144  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 17:22:58  

Additional Information
 Earth MOID = 1.81894 au 
 Jupiter MOID = 2.05232 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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