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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04399135760019211 6.9264e-08  
a 2.866849845577121 2.9901e-08 AU
q 2.740733228834282 2.0517e-07 AU
i 3.549143366230074 6.8462e-06 deg
node 111.6431097887042 0.00013171 deg
peri 124.7108098630551 0.00016823 deg
M 220.5357746969929 0.00011025 deg
tp 2457687.356741469793
(2016-Oct-25.85674147)
0.00054675 JED
period 1772.988208208215
4.85
2.7738e-05
7.594e-08
d
yr
n .2030470356956388 3.1767e-09 deg/d
Q 2.992966462319959 3.1216e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1186  
   data-arc span      9273 days (25.39 yr)  
   first obs. used      1989-11-02  
   last obs. used      2015-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49602  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:15:00  

Additional Information
 Earth MOID = 1.73205 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. 2015-July); 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., in press.]

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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