############################################################################### For the meteor_data.csv file ############################################################################### meteor_data.csv contains data for the 2887 meteors used in our campaign, including MRA and PT data. Most of the data comes directly from the GMN; these columns retain their original meanings (found at: https://globalmeteornetwork.org/data/media/GMN_orbit_data_columns.pdf) though column names are in some cases changed for clarity. The above document is reproduced here for convenience: (The columns we added are denoted by a '*') Class *Classification of meteor phenomena: "M": mra only, "P": pt only, "B": both MRA+PT, "N": neither phenomena Unique_trajectory A 20-character string containing the beginning time (rounded to seconds) and a truncated MD5 hash encoding the trajectory position MJD *The Modified Julian Date of the meteor Beginning_JD Julian date of the beginning of the meteor Beginning_UTC UTC time of the beginning of the meteor Unix *Unix timestamp for the frame containing the meteor, from the WiPT2 camera IAU_no IAU shower number, see https://www.ta3.sk/IAUC22DB/MDC2022/Roje/roje_lista.php. Sporadic meteors have a code -1 IAU_code Three-letter IAU shower code. Sporadic meteors have a code "..." Sol_lon Solar longitude of the beginning of the meteor [deg] App_LST Apparent local sidereal time of the beginning of the meteor [deg] RAgeo Geocentric right ascension in the J2000 epoch [deg] RAgeo_err One sigma error (all subsequent values with reported one sigma errors follow the same *_err format) DECgeo Geocentric declination in the J2000 epoch [deg] LAMgeo Geocentric ecliptic longitude in the J2000 epoch [deg] BETgeo Geocentric ecliptic latitude in the J2000 epoch [deg] Vgeo Geocentric velocity [km/s] LAMhel Heliocentric ecliptic longitude in the J2000 epoch [deg] BEThel Heliocentric ecliptic latitude in the J2000 epoch [deg] Vhel Heliocentric velocity [km/s] a Semi-major axis [AU] e Eccentricity i Inclination [deg] peri Argument of perihelion [deg] node Ascending node [deg] Pi Longitude of perihelion [deg] b Latitude of perihelion [deg] q Perihelion distance [AU] f True anomaly at the beginning of the meteor [deg] M Mean anomaly [deg] Q Aphelion distance [AU] n Mean motion in the orbit [deg/day] T Orbital period [year] TisserandJ Tisserand's parameter with respect to Jupiter RAapp Apparent ground-fixed radiant right ascension in the epoch of date [deg] DECapp Apparent ground-fixed radiant declination in the epoch of date [deg] Azim_posE Apparent ground-fixed radiant azimuth (+east of due north convention) [deg] Elev Apparent ground-fixed radiant elevation (i.e. entry angle) [deg] Vinit Apparent ground-fixed initial velocity [km/s] Vavg Apparent ground-fixed average velocity [km/s] LatBeg Latitude of the beginning of the meteor [deg] LonBeg Longitude of the beginning of the meteor [deg] HtBeg Begin height of the meteor (above the WGS84 ellipsoid) [km] LatEnd Latitude of the meteor end [deg] LonEnd Longitude of the meteor end [deg] HtEnd End height of the meteor (above the WGS84 ellipsoid) [km] Duration Observed meteor duration [s] Peak Peak magnitude normalized to the range of 100km Peak_Ht Height at which the peak magnitude occurred [km] F The F parameter defined as (HtBeg-PeakHt)/(HtBeg-HtEnd) Mass_kg Mass computed with a dimensionless luminous efficiency of 0.7% [kg] Qc Maximum convergence angle between all stations that observed the meteor [deg] MedianFitErr Median angular trajectory fit errors [arcsec] Beg_in Beginning of the meteor observed by at least one camera [boolean] End_in Ending of the meteor observed by at least one camera [boolean] Num Number of stations which observed the meteor Participating Station codes of the stations which observed the meteor Event_id *Our unique label for PT events, format: MJD_UTChour_frameInHour_objectLabel. Corresponds to data filename @ https://lda10g.alliance.unm.edu/~pasi/PTs/PT_images/data/ PT_min_duration *Lower boundary of PT duration [minutes] PT_max_duration *Upper boundary of PT duration; a value of 99 means the PT exceeded the last duration bin (15 minutes) [minutes] PT_obscured *Whether the PT was obscured before it naturally ended [boolean] freq_epoch *Frequency range "A" -> 21.7-41.5 MHz; frequency range "B" -> 29.8-49.6 MHz ref_freq *Channel number [1-6] corresponding to the reference MRA data (e.g. the brightest pixel, the altitude, etc) flux_chan[1-6] *Flux density corresponding to each of the 6 frequency channels (range given by 'freq_epoch') [Jy] flux[1-6]_unc *Statistical uncertainty in flux density of each of the 6 frequency channels; does not include systematic errors [Jy] HtMRA *Height of the peak brightness of the MRA (taken at the 'ref_freq' channel) [km] HtErr *Altitudinal uncertainty in the MRA peak brightness height; accounts for astrometic error, pixel size error, and GMN error [km] KB *KB parameter for meteoroid strength SI *Spectral index derived from power law fit to MRA spectra TOF *Turnover frequency derived from log-normal fit to MRA spectra [MHz]