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JPL Small-Body Database Browser
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423517 (2005 UN64)
Classification: Main-belt Asteroid          SPK-ID: 2423517
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2971488670335767 1.1063e-07  
a 2.600358027796593 4.8812e-08 au
q 1.827664585955169 3.1097e-07 au
i 6.786926041400117 1.493e-05 deg
node 160.7013127997181 8.6313e-05 deg
peri 215.9252595129543 9.9816e-05 deg
M 189.2202876647537 5.4479e-05 deg
tp 2459727.077466800026
(2022-May-27.57746680)
0.00025078 TDB
period 1531.60984095431
4.19
4.3125e-05
1.181e-07
d
yr
n .2350468052462319 6.6181e-09 deg/d
Q 3.373051469638016 6.3316e-08 au
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      4842 days (13.26 yr)  
   first obs. used      2005-10-25  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:34:59  

Additional Information
 Earth MOID = .833692 au 
 Jupiter MOID = 2.09882 au 
 T_jup = 3.342 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456943.5 (2014-Oct-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2939164929887079 1.0858e-07  
q 1.839129201241611 3.0408e-07 au
tp 2456660.780508382167
(2014-Jan-03.28050838)
0.00017997 TDB
node 160.7261805577476 8.6362e-05 deg
peri 215.925826790596 0.00010029 deg
i 6.775676784278719 1.494e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      4842 days (13.26 yr)  
   first obs. used      2005-10-25  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:34:59  

Additional Information
 Jupiter MOID = 2.09882 au 
 T_jup = 3.342 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.178941425080793E-14 -3.289510425172885E-14 -1.563445217079689E-11 -9.291031130377017E-15 -4.615338306380151E-12 5.16122124480973E-15
q -3.289510425172885E-14 9.246678750362829E-14 4.567802183976064E-11 2.759101752343285E-14 1.343197363777703E-11 -1.800333249338491E-14
tp -1.563445217079689E-11 4.567802183976064E-11 3.238890710079645E-8 1.16031551306148E-10 9.282860788419781E-9 -3.794881936010214E-11
node -9.291031130377017E-15 2.759101752343285E-14 1.16031551306148E-10 7.45841189573419E-9 -7.370775497231901E-9 -8.111295301567373E-10
peri -4.615338306380151E-12 1.343197363777703E-11 9.282860788419781E-9 -7.370775497231901E-9 1.005817159185735E-8 7.950053909157915E-10
i 5.16122124480973E-15 -1.800333249338491E-14 -3.794881936010214E-11 -8.111295301567373E-10 7.950053909157915E-10 2.232024620902525E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   n/a MPO268425  

423517 (2005 UN64)          Discovered 2005-Oct-25 by CSS at Catalina
Reference: Last Updated: 2015-02-04

Alternate Designations
 2005 UN64 = 2009 PR16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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