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172939 (2005 JY49)
Classification: Outer Main-belt Asteroid          SPK-ID: 2172939
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596355511825324 5.808e-08  
a 3.228113404746259 3.3924e-08 au
q 2.712791742099869 1.9169e-07 au
i 6.25554320545894 4.9835e-06 deg
node 78.87914784843562 6.0863e-05 deg
peri 265.1459102396641 6.2812e-05 deg
M 112.2984967846915 1.5444e-05 deg
tp 2458339.664988972316
(2018-Aug-09.16498897)
9.1467e-05 TDB
period 2118.466504730602
5.80
3.3395e-05
9.143e-08
d
yr
n .1699342421492663 2.6788e-09 deg/d
Q 3.74343506739265 3.934e-08 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      6272 days (17.17 yr)  
   first obs. used      2001-10-17  
   last obs. used      2018-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59242  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 03:20:15  

Additional Information
 Earth MOID = 1.71454 au 
 Jupiter MOID = 1.70707 au 
 T_jup = 3.158 
[ 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 15.0   n/a MPO459804  
diameter diameter 5.513 km 0.594 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172939 (2005 JY49)          Discovered 2005-May-04 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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