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243511 (2009 WF129)
Classification: Main-belt Asteroid          SPK-ID: 2243511
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08975994938696939 4.8389e-08  
a 2.574570301363401 1.9057e-08 au
q 2.343477001419828 1.2441e-07 au
i 11.53071946283062 5.3125e-06 deg
node 52.20765499180336 2.6178e-05 deg
peri 209.8374951373289 4.9935e-05 deg
M 348.5443947726345 4.531e-05 deg
tp 2459048.514354856747
(2020-Jul-18.01435486)
0.00018988 TDB
period 1508.882979586055
4.13
1.6753e-05
4.587e-08
d
yr
n .2385870904970788 2.6491e-09 deg/d
Q 2.805663601306975 2.0768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      278  
   data-arc span      9164 days (25.09 yr)  
   first obs. used      1995-04-25  
   last obs. used      2020-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:56:04  

Additional Information
 Earth MOID = 1.33561 au 
 Jupiter MOID = 2.23675 au 
 T_jup = 3.394 
[ 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 16.3   n/a MPO475966  
diameter diameter 3.166 km 0.728 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243511 (2009 WF129)          Discovered 2009-Nov-20 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2009 WF129 = 1995 HJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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