The catalogue of meteor orbits from the NFC systems is created by using the software UFO Orbit v2.41. In the program UFO Orbit v2.41, all combinations of meteors in a time interval dt = 3 s are created. For these combinations, the level Q0 is set and some other additional conditions also have to be set:

dur > 0.08 s (duration of the meteor)
dt < 3 s (maximum time difference between 2 stations)
GD < 10 km (minimum ground distance between 2 stations)
Gm% > −100% (overlap of a meteor sighting from two stations)
• 15 km < H1 < 200 km (beginning height)
H2 < 200 km (terminal height)
dV < 4 km/s (the largest difference in velocity between stations considered to compute the orbit)

NFC DATABASE STATISTICS
YEARSINGLE METEORSPAIRED METEORSRAW ORBITSSTATIONS/ORBITPAIRING EFFICIENCY (%)NFC ORBITSREDUCTION (%)
20145428142.00051.851285.71
20154,3241,7768882.00041.0752659.23
20166,5172,3221,1612.00035.6369659.94
OVERALL 10,8954,1262,0632.00037.871,23459.82

The single-station meteor statistics from the individual stations using the NFC system. The pairs are made up of stations as follows: Kroměříž (CZ) + Valašské Meziříčí (CZ), Zákopčie (SK) + Kysucké Nové Mesto (SK) and Senec (SK) + Blahová (SK).

NFC STATIONS STATISTICS
YEARKROMĚŘÍŽVALAŠSKÉ MEZIŘÍČÍZÁKOPČIEKYSUCKÉ NOVÉ MESTOSENECBLAHOVÁOVERALL
20142925000054
20151,3069877265813214034,324
20161,0761,0067626131,3811,6796,517
OVERALL 2,4112,0181,4881,1941,7022,08210,895

The NFC orbit database (created according to Koukal et al. 2015) contains orbital elements and geophysical data of 1,234 meteors from 2014 to 2016 (latest update 30.1.2018). The database is saved in csv format and contains the data of all unified orbits within the given criteria.

RECENT NFC DATABASE TO DOWNLOAD
YEAR2D GROUNDMAPDATABASE CSV FILE
2014U2_2014
2015U2_2015
2016U2_2016