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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812238121685148 7.8504e-08  
a 3.983117201335993 7.5818e-08 AU
q 3.261281517795899 2.9492e-07 AU
i 12.69519382156421 1.2341e-05 deg
node 354.7252534061334 3.3635e-05 deg
peri 292.0561073457092 4.9267e-05 deg
M 148.975739404744 3.9801e-05 deg
tp 2455798.938224427101
(2011-Aug-25.43822443)
0.00031019 JED
period 2903.575044732881
7.95
8.2904e-05
2.27e-07
d
yr
n .1239850854390845 3.5401e-09 deg/d
Q 4.704952884876088 8.9559e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      784  
   data-arc span      21764 days (59.59 yr)  
   first obs. used      1955-03-24  
   last obs. used      2014-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51127  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:03:41  

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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