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172942 (2005 JX71)
Classification: Main-belt Asteroid          SPK-ID: 2172942
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1303448496459716 5.9055e-08  
a 2.715973178017229 2.854e-08 au
q 2.361960062486082 1.6179e-07 au
i 11.77920428162866 6.3486e-06 deg
node 271.11733284041 3.5584e-05 deg
peri 327.098792498054 4.5068e-05 deg
M 108.3442083664804 3.0858e-05 deg
tp 2458508.471973014340
(2019-Jan-24.97197301)
0.00013663 TDB
period 1634.882864395345
4.48
2.5769e-05
7.055e-08
d
yr
n .2201992618799297 3.4708e-09 deg/d
Q 3.069986293548377 3.226e-08 au
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      6251 days (17.11 yr)  
   first obs. used      2002-10-06  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61633  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:01:24  

Additional Information
 Earth MOID = 1.35774 au 
 Jupiter MOID = 2.01611 au 
 T_jup = 3.318 
[ 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 15.2   n/a MPO396378  
diameter diameter 2.595 km 0.536 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172942 (2005 JX71)          Discovered 2005-May-08 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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