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JPL Small-Body Database Browser
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172040 (2001 WQ71)
Classification: Outer Main-belt Asteroid          SPK-ID: 2172040
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548606745842477 4.5397e-08  
a 3.205785624860184 2.8294e-08 au
q 2.709335500421852 1.4789e-07 au
i 5.874806179131843 5.9947e-06 deg
node 65.58269645105166 5.7474e-05 deg
peri 68.47942401716335 6.166e-05 deg
M 18.4237964742468 2.1632e-05 deg
tp 2458893.205670732239
(2020-Feb-13.70567073)
0.00012555 TDB
period 2096.525468590922
5.74
2.7756e-05
7.599e-08
d
yr
n .1717126767088389 2.2733e-09 deg/d
Q 3.702235749298517 3.2675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      340  
   data-arc span      8844 days (24.21 yr)  
   first obs. used      1995-10-21  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61738  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 21:44:32  

Additional Information
 Earth MOID = 1.73068 au 
 Jupiter MOID = 1.38782 au 
 T_jup = 3.166 
[ 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 15.6   n/a MPO469842  

172040 (2001 WQ71)          Discovered 2001-Nov-20 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2001 WQ71 = 1995 UL65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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