J/A+A/667/A157 824 fireballs observed in 2017-2018 (Borovicka+, 2022)
Data on 824 fireballs observed by the digital cameras of the European Fireball
Network in 2017-2018.
I. Description of the network, data analysis, and the catalog.
Borovicka J., Spurny P., Shrbeny L., Stork R., Kotkova L., Fuchs J.,
Keclikova J., Zichova H., Manek J., Vachova P., Macourkova I., Svoren J.,
Mucke H.
<Astron. Astrophys. 667, A157 (2022)>
=2022A&A...667A.157B 2022A&A...667A.157B (SIMBAD/NED BibCode)
ADC_Keywords: Solar system ; Minor planets ; Meteorites
Keywords: catalogs - meteorites, meteors, meteoroids -
instrumentation: miscellaneous - methods: observational -
methods: data analysis
Abstract:
A catalog of 824 fireballs, i.e. bright meteors, observed by a
dedicated network of all-sky digital photographic cameras in central
Europe is presented. The current status of the European Fireball
Network, established in 1963, is described. The cameras collect
digital images of meteors brighter than absolute magnitude about -2
and radiometric light curves with high temporal resolution of those
brighter than magnitude ~-4. All meteoroids larger than 5grams,
corresponding to sizes of about 2 cm, are detected regardless of their
entry velocity. High-velocity meteoroids are detected down to masses
of about 0.1gram. The largest observed meteoroid in the reported
period 2017-2018 had a mass of about 100kg and size of about 40cm.
The methods of data analysis are explained and all catalog entries are
described in detail. The provided data include fireball date and time,
atmospheric trajectory and velocity, the radiant in various coordinate
systems, heliocentric orbital elements, maximum brightness, radiated
energy, initial and terminal masses, maximum encountered dynamic
pressure, physical classification, and possible shower membership.
Basic information on fireball spectrum is available for some bright
fireballs. A simple statistical evaluation of the whole sample is
provided. The scientific analysis is presented in an accompanying
paper.
Description:
Each catalog line contains data on one fireball. For two of the 824
fireballs, photometric measurement was not possible and the entries
depending on fireball brightness are not given. Possible meteor shower
and possible related body are given only for some fireballs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 660 824 Fireball data
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Code Fireball code
18- 27 A10 "date" Obs.date Observation date
29- 38 A10 "h:m:s" Obs.time Observation time
40- 43 F4.1 s e_Obs.time Time error
46- 58 F13.5 d JD Julian Date
61- 68 F8.4 deg Lsun Solar Longitude J2000
71- 78 F8.4 deg Lam-beg Longitude of the beginning point
80- 87 F8.4 deg Phi-beg Latitude of the beginning point
89- 94 F6.2 km H-beg Height of the beginning point
97-104 F8.4 deg Lam-end Longitude of the end point
106-113 F8.4 deg Phi-end Latitude of the end point
115-120 F6.2 km H-end Height of the end point
123-129 F7.3 deg Lam-avg Longitude of the average point
131-137 F7.3 deg Phi-avg Latitude of the average point
139-143 F5.1 km H-avg Height of the average point
146-152 F7.3 deg Lam-max ?=0 Longitude at the maximum brightness
(zero if not measured)
154-160 F7.3 deg Phi-max ?=0 Latitude at the maximum brightness
(zero if not measured)
162-166 F5.1 km H-max ?=0 Height at the maximum brightness
(zero if not measured)
169-173 F5.1 km Length Length of the fireball
176-180 F5.2 s Dur Duration of the part with
velocity measurements
183-188 F6.2 deg Azim Azimuth of the radiant (North=0)
190-194 F5.2 deg ZenDis Zenith Distance of the radiant
197-203 F7.3 deg RAdeg Right Ascension of the apparent radiant J2000
205-209 F5.3 deg e_RAdeg Error of the Right Ascension of the
apparent radiant
212-218 F7.3 deg DEdeg Declination of the apparent radiant J2000
220-224 F5.3 deg e_DEdeg Error of the Declination of the
apparent radiant
227-233 F7.3 km/s Vinf Initial velocity
235-239 F5.3 km/s e_Vinf Error of the initial velocity
241-245 F5.1 km/s Vmax ?=0 Velocity at the maximum brightness
(zero if not measured)
247-251 F5.1 km/s Vter Terminal measured velocity
253-257 F5.1 km Hvter Height of terminal velocity measurement
260-266 F7.3 deg RAgeo Right Ascension of the geocentric
radiant J2000
268-272 F5.3 deg e_RAgeo Error of the Right Ascension of the
geocentric radiant
275-281 F7.3 deg DEgeo Declination of the geocentric radiant J2000
283-287 F5.3 deg e_DEgeo Error of the Declination of the
geocentric radiant
290-296 F7.3 deg Lgeo-Lsun Ecliptical Longitude of the geocentric radiant
minus Solar Longitude
299-305 F7.3 deg Bgeo Ecliptical Latitude of the geocentric radiant
307-313 F7.3 km/s Vgeo Geocentric velocity
315-319 F5.3 km/s e_Vgeo Error of the geocentric velocity
322-328 F7.3 deg Lhel Ecliptical Longitude of the
heliocentric radiant
330-334 F5.3 deg e_Lhel Error of the Ecliptical Longitude of the
geocentric radiant
337-343 F7.3 deg Bhel Ecliptical Longitude of the
heliocentric radiant
345-349 F5.3 deg e_Bhel Error of the Ecliptical Longitude of the
heliocentric radiant
352-356 F5.2 km/s Vhel Heliocentric velocity
358-361 F4.2 km/s e_Vhel Error of the heliocentric velocity
363-371 F9.3 au Ax Semimajor Axis
373-381 F9.3 au e_Ax Error of Semimajor Axis
(99999.999 if larger than 105)
383-388 F6.4 --- Ecc Eccentricity
390-395 F6.4 --- e_Ecc Error of Eccentricity
397-402 F6.4 au Perih Perihelion Distance
404-409 F6.4 au e_Perih Error of Perihelion Distance
411-419 F9.3 au Aph Aphelion Distance
(zero for hyperbolic orbits)
421-429 F9.3 au e_Aph Error of Aphelion Distance
(99999.999 if larger than 10^5,
zero for hyperbolic orbits)
431-436 F6.2 deg Inc Inclination
438-441 F4.2 deg e_Inc Error of inclination
443-448 F6.2 deg Omg Argument of Perihelion
450-453 F4.2 deg e_Omg Error of Argument of Perihelion
455-461 F7.3 deg Nod Longitude of the Ascending Node
463-467 F5.3 deg e_Nod Error of Longitude of the Ascending Node
469-474 F6.2 deg Lper Longitude of Perihelion
476-479 F4.2 deg e_Lper Error of Longitude of Perihelion
480-486 I7 yr Tyear ?=0 Perihelion Date (year)
(zero for hyperbolic orbits)
488-489 I2 "month" Tmonth Perihelion Date (month)
(zero for hyperbolic orbits)
491-495 F5.2 d Tday ?=0 Perihelion Date (day)
(zero for hyperbolic orbits)
497-505 F9.2 d e_Tday ?=0 Error of Perihelion Date
(999999.99 if larger than 106,
zero for hyperbolic orbits)
507-515 F9.2 yr Per ?=0 Orbital Period
(zero for hyperbolic orbits)
517-525 F9.2 yr e_Per ?=0 Error of Orbital Period
(999999.999 if larger than 106,
zero for hyperbolic orbits)
527-532 F6.3 --- Tiss Tisserand parameter
534-538 F5.3 --- e_Tiss Error of the Tisserand parameter
540-544 F5.1 mag MAG ?=0 Maximum absolute brightness
(zero if not measured)
545-552 E8.2 J Energy ?=0 Total radiated energy
(zero if not measured)
554-560 E7.1 kg Mass ?=0 Photometric mass
(zero if not measured)
562-567 F6.3 kg TerMass Terminal dynamic mass
569-573 F5.2 --- PE ?=0 PE value
(Ceplecha & McCrosky 1976, JGR, 81, 6257)
(zero if not measured)
575-583 A9 --- Type Fireball type
(Ceplecha & McCrosky 1976, JGR, 81, 6257)
(---- if not measured)
585-590 F6.3 MPa Pres Maximum dynamic pressure
592-596 F5.1 km Hpres Height of maximum dynamic pressure
599-603 F5.3 --- Pf Pf value (Paper II, Borovicka et al.,
2022A&A...667A.158B 2022A&A...667A.158B)
605-610 A6 --- Pf-class Meteoroid class (Paper II, Borovicka et al.,
2022A&A...667A.158B 2022A&A...667A.158B)
(----- if not measured)
612-614 A3 --- Shower Possible meteor shower (IAU Code)
616-641 A26 --- Object Possible related body
643-644 I2 --- Ncam Number of cameras
647-649 I3 km MinDist Minimal distance fireball-camera
652-660 A9 --- Spectrum Note on availability of spectrum
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Acknowledgements:
Jiri Borovicka, jiri.borovicka(at)asu.cas.cz
References:
Borovicka et al., Paper II 2022A&A...667A.158B 2022A&A...667A.158B
(End) Jiri Borovicka [Czech Acad. Sci.], Patricia Vannier [CDS] 11-Nov-2022