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7174 Semois (1988 SQ)
Classification: Outer Main-belt Asteroid          SPK-ID: 2007174
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812238135813929 7.8326e-08  
a 3.983117200770473 7.5417e-08 AU
q 3.261281511705205 2.9365e-07 AU
i 12.69518953456609 1.1607e-05 deg
node 354.7252512419084 3.3561e-05 deg
peri 292.0561104969721 4.7985e-05 deg
M 148.9757384867182 3.8654e-05 deg
tp 2455798.938232087321
(2011-Aug-25.43823209)
0.00029969 JED
period 2903.57504411451
7.95
8.2465e-05
2.258e-07
d
yr
n .1239850854654895 3.5213e-09 deg/d
Q 4.704952889835741 8.9084e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      787  
   data-arc span      21792 days (59.66 yr)  
   first obs. used      1955-03-24  
   last obs. used      2014-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51095  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:20:10  

Additional Information
 Earth MOID = 2.27627 AU 
 T_jup = 2.985 
[ 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 11.5 mag n/a MPO250280  

7174 Semois           Discovered 1988 Sept. 18 by H. Debehogne at the European Southern Observatory.
The Semois, a river in Wallonia, rises near the city of Arlon, Luxembourg. It flows from the Ardennes to the river Meuse.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

Alternate Designations
 1988 SQ = 1980 RH3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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