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13963 Euphrates (1991 PT4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2013963
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2570952532990084 4.0215e-08  
a 3.328848253400538 2.3454e-08 au
q 2.473017168498565 1.3467e-07 au
i .9359799438355586 5.1845e-06 deg
node 227.2001230117623 0.00021571 deg
peri 129.5322874763195 0.00021593 deg
M 246.9967649991218 1.2285e-05 deg
tp 2459696.850352488367
(2022-Apr-27.35035249)
7.9458e-05 TDB
period 2218.39779094699
6.07
2.3445e-05
6.419e-08
d
yr
n .1622792816820842 1.715e-09 deg/d
Q 4.184679338302511 2.9484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1060  
   data-arc span      17987 days (49.25 yr)  
   first obs. used      1971-03-26  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:42:58  

Additional Information
 Earth MOID = 1.46906 au 
 Jupiter MOID = 1.2756 au 
 T_jup = 3.109 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO435833  

13963 Euphrates           Discovered 1991 Aug. 3 by E. W. Elst at the European Southern Observatory.
The Euphrates river flows through northern Syria and Iraq. At Al Qurnah the Tigris and Euphrates rivers come close together, forming the Tigris-Euphrates system.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1991 PT4 = 1997 TO10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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