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14612 Irtish (1998 SG164)
Classification: Main-belt Asteroid          SPK-ID: 2014612
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09603100203766979 7.6962e-08  
a 3.154763005055568 4.315e-08 AU
q 2.851807952488711 2.4981e-07 AU
i 7.312223284107852 9.156e-06 deg
node 141.0891525547685 5.1107e-05 deg
peri 78.82076464228403 7.0844e-05 deg
M 96.84033150896562 4.8677e-05 deg
tp 2456249.942982516995
(2012-Nov-18.44298252)
0.00027566 JED
period 2046.673356085446
5.60
4.1991e-05
1.15e-07
d
yr
n .1758951905684409 3.6088e-09 deg/d
Q 3.457718057622424 4.7293e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      889  
   data-arc span      14585 days (39.93 yr)  
   first obs. used      1974-07-19  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50166  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:32:57  

Additional Information
 Earth MOID = 1.85646 AU 
 T_jup = 3.187 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6 mag n/a MPO244316  
diameter diameter 25.24 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.0333   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

14612 Irtish           Discovered 1998 Sept. 18 by E. W. Elst at the European Southern Observatory.
The Irtish river has its source on the icy slopes of the Mongolian Altai Montains in China. About 600 km of its 4250-km length pass through Chinese territory and 1200 km traverse the arid steppes of Kazakhstan. Entering Russia near Omsk, it passes the city of Tobolsk and eventually flows into the Ob.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17

[ show close-approach data ]
Alternate Designations
 1998 SG164 = 1974 OK1 = 2000 AF80 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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