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JPL Small-Body Database Browser
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268389 (2005 US123)
Classification: Main-belt Asteroid          SPK-ID: 2268389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08862346776827683 6.131e-08  
a 2.608702560733589 3.0763e-08 au
q 2.377510293425395 1.6184e-07 au
i .6995108514716839 1.0069e-05 deg
node 287.1440266844203 0.00070204 deg
peri 140.0851282372139 0.00070866 deg
M 51.07509497336987 9.4866e-05 deg
tp 2458382.155651325927
(2018-Sep-20.65565133)
0.00040355 TDB
period 1538.988142139525
4.21
2.7222e-05
7.453e-08
d
yr
n .2339199309875919 4.1377e-09 deg/d
Q 2.839894828041784 3.3489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      6221 days (17.03 yr)  
   first obs. used      2001-12-19  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67154  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:19:41  

Additional Information
 Earth MOID = 1.39112 au 
 Jupiter MOID = 2.38315 au 
 T_jup = 3.405 
[ 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 17.2   n/a MPO427487  

268389 (2005 US123)          Discovered 2005-Oct-24 by Spacewatch at Kitt Peak
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 2005 US123 = 2009 ST153 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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