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12422 (1995 US8)
Classification: Main-belt Asteroid          SPK-ID: 2012422
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08556371826017005 5.4853e-08  
a 2.40124487932244 1.8281e-08 au
q 2.195785438994418 1.376e-07 au
i 12.09191410350268 7.0808e-06 deg
node 69.3405554220134 3.0173e-05 deg
peri 213.1751279533726 6.1122e-05 deg
M 319.6829827957584 5.7932e-05 deg
tp 2457752.708532116086
(2016-Dec-30.20853212)
0.00021944 JED
period 1359.10529502233
3.72
1.552e-05
4.249e-08
d
yr
n .2648801393964734 3.0248e-09 deg/d
Q 2.606704319650461 1.9845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      9467 days (25.92 yr)  
   first obs. used      1990-05-15  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45409  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:14:07  

Additional Information
 Earth MOID = 1.1884 au 
 Jupiter MOID = 2.47971 au 
 T_jup = 3.491 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO350901  
rotation period rot_per 3.4 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

12422 (1995 US8)          Discovered 1995-Oct-27 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 US8 = 1990 JK1 = 1990 KO1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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