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12492 Tanais (1997 JP16)
Classification: Main-belt Asteroid          SPK-ID: 2012492
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0422224689016345 6.9263e-08  
a 2.86739029665704 2.1728e-08 au
q 2.74632199902759 2.0346e-07 au
i 3.546609047767759 5.4376e-06 deg
node 111.5961880808336 0.00012736 deg
peri 124.0104170282467 0.00015586 deg
M 342.8929047381646 9.0776e-05 deg
tp 2457684.775709363980
(2016-Oct-23.27570936)
0.00044713 JED
period 1773.489590527825
4.86
2.0158e-05
5.519e-08
d
yr
n .2029896323737976 2.3073e-09 deg/d
Q 2.98845859428649 2.2646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1401  
   data-arc span      9663 days (26.46 yr)  
   first obs. used      1989-11-02  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48753  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:14:15  

Additional Information
 Earth MOID = 1.736 au 
 Jupiter MOID = 1.99482 au 
 T_jup = 3.295 
[ 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 13.0 mag n/a MPO319241  
rotation period rot_per 3.0069 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

12492 Tanais           Discovered 1997 May 3 by E. W. Elst at the European Southern Observatory.
The Don, known to the Greeks as the Tanais, is a major Russian river. From its source near the city of Tula, the river flows generally in a southeasterly direction, turning to the west near Volgograd near its closest point to the Volga. The river empties into the sea of Azov.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

[ show close-approach data ]
Alternate Designations
 1997 JP16 = 1989 VH2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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