Z. Kanuchova and J. Svoren

Meteoroids of 1P/Halley - the list of photographic orbits

The paper presents a list of the Orionids and Eta Aquariids meteoroid streams 
members selected 
from the newest completed version of the IAU Meteor Data Center 
catalogue 
of precise photographic orbits (Lindblad, B.A., Neslusan, L., Porubcan, 
V.,
Svoren, J.: 2005, Earth, Moon, Planets 93, 249-260). The meteors with 

heliocentric velocities higher than 48 km/s were rejected from the selection
in 
according to our previous results (Porubcan, V., Svoren, J., Neslusan, L.:
1995, 
Earth, Moon, Planets 68, 471-478). 
Thus the final set of database 
consisted of 4526 orbits. 




The method of indices was used to acquire a basic data sets for two meteor 
streams originating in the comet 1P/Halley - the Orionids - 
totally 63 orbits; 
and Eta Aquariids, for which 14 orbits were selected. A detailed description 
of the method of 
indices was published before (Svoren, J., Neslusan, L., 
Porubcan, V.: 2000,
Planet. Space Sci. 48, 933-937 and Kanuchova, Z., Svoren, J., 
Neslusan, L.:
2005, Contrib. Astron. Obs. Skalnate Pleso 35, 135-162). 



The list of selected Orionids (Eta Aquariids) is given in the file 
Orionids.txt (EAquariids.txt). Only 
indentification code, date 
and time of observation and 8 analysed parameters
are incorporated 
in the file. Reader can obtain all the other data which
 characterize 
the selected meteors from the electronics version of the 
IAU MDC database 
(cited before). An indentification code is easy way to 
identify in the 
database the meteors here selected.



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* An eaxample of the first lines of the file "Orionids.txt":                 *

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63 selected Orionids

IC - identification number,
d.t. - date (yymmdd.) and time (.ttttt),
q - perihelion distance in AU,
e - eccentricity,
omega - argument of perihelion in degrees,

Omega - longitude of ascending node,

i - inclination of the plane of meteor orbit to the ecliptic in degrees,

alpha - right ascension of the radiant in degrees,

delta - declination of the radiant in degrees,
v_g - geocentric velocity in km per second.  	


  IC       d.t.         q       e     omega  Omega    i     alpha  delta    v_g

229P1   571002.36249   0.713   0.973   65.4    9.5   162.1   80.4   13.9   67.84
103C1   591007.01009   0.715   0.914   66.2   13.6   162.3   85.2   14.3   67.19
*
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Please, feel free to use the data selected in the Orionids.txt and EAquariids.txt 
only the paper
(Kanuchova, Z., Svoren, J.: 2013, Contrib. Astron. Obs. Skalnate Pleso 
43,
Vol. 2, 1-7) should be quoted in each official using of the file or its part.