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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04284371587499969 6.9484e-08  
a 2.869203530006706 3.0522e-08 au
q 2.746276189179553 2.0674e-07 au
i 3.546841818534892 6.7967e-06 deg
node 111.6187739957142 0.00012799 deg
peri 123.6938548237357 0.00016556 deg
M 302.6338891341265 0.00011112 deg
tp 2457683.374219532533
(2016-Oct-21.87421953)
0.00054969 JED
period 1775.172091930892
4.86
2.8326e-05
7.755e-08
d
yr
n .2027972395670216 3.2359e-09 deg/d
Q 2.99213087083386 3.1829e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1193  
   data-arc span      9540 days (26.12 yr)  
   first obs. used      1989-11-02  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49969  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:20:59  

Additional Information
 Earth MOID = 1.73527 au 
 Jupiter MOID = 1.99049 au 
 T_jup = 3.294 
[ 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. 2015-December); 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. (2015) 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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