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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456884.5 (2014-Aug-15.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551695693807287 5.6237e-08  
q 2.733536524522013 1.8193e-07 au
tp 2456199.830290406931
(2012-Sep-29.33029041)
0.00010659 TDB
node 79.60037844114534 6.0399e-05 deg
peri 262.0603940327409 6.2791e-05 deg
i 6.2741306064999 4.9945e-06 deg
  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
 Jupiter MOID = 1.70707 au 
 T_jup = 3.158 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.162655848808213E-15 -1.010618689454965E-14 7.094307131348115E-13 -1.004523948107428E-14 1.502599957074157E-13 -9.822102488663966E-16
q -1.010618689454965E-14 3.309940272538199E-14 -3.335170560595932E-12 3.683761460247922E-14 -6.019285521881168E-13 4.837501008886303E-15
tp 7.094307131348115E-13 -3.335170560595932E-12 1.136127376099848E-8 -2.354489323993454E-11 1.915897457109078E-9 2.301222626070287E-12
node -1.004523948107428E-14 3.683761460247922E-14 -2.354489323993454E-11 3.647997615143856E-9 -3.627552356433796E-9 -1.266740531237566E-11
peri 1.502599957074157E-13 -6.019285521881168E-13 1.915897457109078E-9 -3.627552356433796E-9 3.942721975843252E-9 1.285628671251022E-11
i -9.822102488663966E-16 4.837501008886303E-15 2.301222626070287E-12 -1.266740531237566E-11 1.285628671251022E-11 2.494545848457772E-11

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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