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JPL Small-Body Database Browser
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312919 (2011 WU9)
Classification: Main-belt Asteroid          SPK-ID: 2312919
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07521522773471816 4.6478e-08  
a 2.651279225486281 2.1329e-08 au
q 2.451862654753004 1.2479e-07 au
i .7678134603998246 4.7428e-06 deg
node 76.38761865490899 0.00047723 deg
peri 41.72169612805642 0.00047915 deg
M 206.0647004171915 4.3504e-05 deg
tp 2459274.744403955395
(2021-Mar-01.24440396)
0.00019268 TDB
period 1576.818222212693
4.32
1.9028e-05
5.21e-08
d
yr
n .228307863854354 2.755e-09 deg/d
Q 2.850695796219559 2.2933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      8098 days (22.17 yr)  
   first obs. used      1997-08-01  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44322  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:13:33  

Additional Information
 Earth MOID = 1.46838 au 
 Jupiter MOID = 2.19857 au 
 T_jup = 3.386 
[ 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 16.7   n/a MPO352918  

312919 (2011 WU9)          Discovered 2004-Feb-12 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 WU9 = 1997 PW1 = 2007 XM47 = 2009 HO70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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