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

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09773303979818573 3.5861e-08  
a 3.151208053130688 1.8466e-08 au
q 2.843230911061704 1.0863e-07 au
i 7.317432411490128 4.1129e-06 deg
node 140.9489196438817 2.9283e-05 deg
peri 77.31207464323171 3.5984e-05 deg
M 125.607155104892 2.126e-05 deg
tp 2458287.604420219525
(2018-Jun-18.10442022)
0.00012027 TDB
period 2043.214882994956
5.59
1.796e-05
4.917e-08
d
yr
n .1761929217509956 1.5487e-09 deg/d
Q 3.459185195199673 2.0271e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1902  
   data-arc span      16538 days (45.28 yr)  
   first obs. used      1974-07-19  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50188  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:50:31  

Additional Information
 Earth MOID = 1.84794 au 
 Jupiter MOID = 1.55761 au 
 T_jup = 3.188 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO449055  
diameter diameter 16.447 km 0.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1998 SG164 = 1974 OK1 = 2000 AF80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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