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JPL Small-Body Database Browser
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441859 (2009 WU171)
Classification: Main-belt Asteroid          SPK-ID: 2441859
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588713777421778 1.2073e-07  
a 2.178825054131152 4.2409e-08 au
q 1.83267211592216 2.9213e-07 au
i 4.349269051627074 9.0811e-06 deg
node 285.623963048086 9.9361e-05 deg
peri 79.87843734431385 0.00010859 deg
M 13.70064120037225 5.634e-05 deg
tp 2458555.793532026580
(2019-Mar-13.29353203)
0.00018267 TDB
period 1174.71352143678
3.22
3.4297e-05
9.39e-08
d
yr
n .3064576966473391 8.9473e-09 deg/d
Q 2.524977992340143 4.9146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      3723 days (10.19 yr)  
   first obs. used      2006-12-13  
   last obs. used      2017-02-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63592  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:34:17  

Additional Information
 Earth MOID = .835915 au 
 Jupiter MOID = 2.94681 au 
 T_jup = 3.662 
[ 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 18.4   n/a MPO402743  

441859 (2009 WU171)          Discovered 2006-Dec-13 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2009 WU171 = 2006 YT24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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