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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09765394446754343 1.5919e-08  
a 3.151119327857324 1.5497e-08 au
q 2.843400096004143 5.1635e-08 au
i 7.317484613917179 8.2322e-07 deg
node 140.949476497034 1.1943e-05 deg
peri 77.22275964300292 1.7263e-05 deg
M 160.9562679903423 1.5123e-05 deg
tp 2458287.015686201048
(2018-Jun-17.51568620)
8.3523e-05 TDB
period 2043.128590601732
5.59
1.5072e-05
4.126e-08
d
yr
n .176200363332968 1.2998e-09 deg/d
Q 3.458838559710506 1.701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2363  
   data-arc span      17009 days (46.57 yr)  
   first obs. used      1974-07-19  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:33:44  

Additional Information
 Earth MOID = 1.84707 au 
 Jupiter MOID = 1.55667 au 
 T_jup = 3.188 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09651702717293352 1.612e-08  
q 2.848928494520078 5.2349e-08 au
tp 2458295.224546997125
(2018-Jun-25.72454700)
8.3443e-05 TDB
node 141.0901795044096 1.1951e-05 deg
peri 78.71374729255123 1.7309e-05 deg
i 7.312632787123479 8.2372e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2363  
   data-arc span      17009 days (46.57 yr)  
   first obs. used      1974-07-19  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:33:44  

Additional Information
 Jupiter MOID = 1.55667 au 
 T_jup = 3.188 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.598662894959814E-16 -8.126929696112968E-16 4.018723788712434E-13 4.159588244315285E-14 1.49076981916301E-14 2.416034235310709E-15
q -8.126929696112968E-16 2.740460071842992E-15 -9.159948093169076E-13 -1.234422486670278E-13 -1.898600848458863E-14 -7.262691360058023E-15
tp 4.018723788712434E-13 -9.159948093169076E-13 6.962777732401481E-9 -1.15564360730488E-11 1.027002505771885E-9 -6.843400705116267E-13
node 4.159588244315285E-14 -1.234422486670278E-13 -1.15564360730488E-11 1.428268628856445E-10 -1.461772382364481E-10 3.763804987934154E-12
peri 1.49076981916301E-14 -1.898600848458863E-14 1.027002505771885E-9 -1.461772382364481E-10 2.995894006120609E-10 -4.054069572920352E-12
i 2.416034235310709E-15 -7.262691360058023E-15 -6.843400705116267E-13 3.763804987934154E-12 -4.054069572920352E-12 6.785074535842359E-13

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 12.82   n/a E2021B10  
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

[ show close-approach data ]
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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