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JPL Small-Body Database Browser
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423533 (2005 US169)
Classification: Main-belt Asteroid          SPK-ID: 2423533
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1940955415760921 1.1831e-07  
a 2.638881648238741 3.8654e-08 au
q 2.126686485568632 3.3006e-07 au
i 2.160765481134421 1.0442e-05 deg
node 347.20316871 0.00025493 deg
peri 159.7948383731424 0.00025608 deg
M 64.91664090958879 3.1177e-05 deg
tp 2458718.153873037308
(2019-Aug-22.65387304)
0.00013111 TDB
period 1565.771184127229
4.29
3.4403e-05
9.419e-08
d
yr
n .2299186520032084 5.0517e-09 deg/d
Q 3.151076810908851 4.6157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      7608 days (20.83 yr)  
   first obs. used      1998-01-30  
   last obs. used      2018-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54536  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:08:52  

Additional Information
 Earth MOID = 1.1386 au 
 Jupiter MOID = 1.8586 au 
 T_jup = 3.368 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456663.5 (2014-Jan-06.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1949934594822238 1.1818e-07  
q 2.123711277442677 3.3012e-07 au
tp 2457152.983294499442
(2015-May-10.48329450)
0.00010897 TDB
node 347.22835731141 0.00025488 deg
peri 159.9507891774674 0.00025603 deg
i 2.161838070234566 1.0444e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      7608 days (20.83 yr)  
   first obs. used      1998-01-30  
   last obs. used      2018-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54536  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:08:52  

Additional Information
 Jupiter MOID = 1.8586 au 
 T_jup = 3.368 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.396570959794531E-14 -3.888872880442287E-14 -5.88732745304762E-12 -7.330523604759542E-14 -8.241825680957003E-13 -1.085816958585675E-14
q -3.888872880442287E-14 1.089802113183142E-13 1.73751167226747E-11 2.063193657923126E-13 2.465713885936833E-12 3.173348772932816E-14
tp -5.88732745304762E-12 1.73751167226747E-11 1.187538269177177E-8 2.388031604348957E-11 2.673448518328386E-9 1.206485438046093E-11
node -7.330523604759542E-14 2.063193657923126E-13 2.388031604348957E-11 6.496614917446633E-8 -6.491753820084848E-8 -9.597208981933924E-10
peri -8.241825680957003E-13 2.465713885936833E-12 2.673448518328386E-9 -6.491753820084848E-8 6.555214494021634E-8 9.615039420967639E-10
i -1.085816958585675E-14 3.173348772932816E-14 1.206485438046093E-11 -9.597208981933924E-10 9.615039420967639E-10 1.090741671334177E-10

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 17.4   n/a MPO419086  

423533 (2005 US169)          Discovered 2005-Oct-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-02-04

[ show close-approach data ]
Alternate Designations
 2005 US169 = 2007 EG182 = 2011 DB4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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