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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812238110762616 7.825e-08  
a 3.983117201961923 7.5396e-08 AU
q 3.261281522658968 2.9326e-07 AU
i 12.69518997961492 1.1567e-05 deg
node 354.7252506300219 3.3542e-05 deg
peri 292.0561095479642 4.7919e-05 deg
M 148.9757397139244 3.8614e-05 deg
tp 2455798.938221650180
(2011-Aug-25.43822165)
0.00029932 JED
period 2903.575045417308
7.95
8.2442e-05
2.257e-07
d
yr
n .123985085409859 3.5204e-09 deg/d
Q 4.704952881264878 8.906e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      789  
   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      .51191  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:07:35  

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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