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JPL Small-Body Database Browser
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442381 (2011 UA9)
Classification: Main-belt Asteroid          SPK-ID: 2442381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3322667315782187 8.9525e-08  
a 2.602150681265575 3.6943e-08 au
q 1.737542579327428 2.532e-07 au
i 3.635068096778339 6.0399e-06 deg
node 220.4076506542008 6.9663e-05 deg
peri 121.3768319446118 7.1067e-05 deg
M 50.71821443378452 8.5019e-06 deg
tp 2458784.497616354453
(2019-Oct-27.99761635)
3.4263e-05 TDB
period 1533.193922154303
4.20
3.2651e-05
8.939e-08
d
yr
n .2348039571498961 5.0004e-09 deg/d
Q 3.466758783203723 4.9218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      4875 days (13.35 yr)  
   first obs. used      2006-04-30  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42737  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:05  

Additional Information
 Earth MOID = .733064 au 
 Jupiter MOID = 1.97573 au 
 T_jup = 3.331 
[ 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 17.0   n/a MPO440831  

442381 (2011 UA9)          Discovered 2006-Apr-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 UA9 = 2006 HH96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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