Coordinate system

The origin is the top-left corner. The X-axis increases to the right, and the Y-axis increases downward.

Description of Detection Counts

Meteor CountNumber of meteors (per day)
MoonMoon Illumination (0: Dark - 100: Bright)
Meteor Count of the DayNumber of meteors (per hour)
AverageAverage number of meteors over the past 30 days (per day) × selected number of days
Meteor DirectionMeteor direction (Up: 0°, Right: 90°)

Explanation of Daily List Table

IDRegistration order in the database
CategoryMeteor length: L5: 300px+, L4: 200px+, L3: 100px+, L2: 50px+, L1: 15px+, L0: 9px+
LASER: Laser, NOISE: Noise
XSMeteor detection start X-coordinate
YSMeteor detection start Y-coordinate
XEMeteor detection end X-coordinate
YEMeteor detection end Y-coordinate
RA_SMeteor detection start Right Ascension (°)
DEC_SMeteor detection start Declination (°)
RA_EMeteor detection end Right Ascension (°)
DEC_EMeteor detection end Declination (°)
METEOR ABBRMeteor Shower Abbreviation
METEOR NAMEMeteor Shower Name
Displayed only if METEOR ANGLE is within 5°.
METEOR ANGLEAngle between meteor path and shower's radiant point
DXMovement in X direction: XE - XS
DYMovement in Y direction: YE - YS
VXVelocity in X direction: DX / DT
VYVelocity in Y direction: DY / DT
DTTime from detection start to end (seconds)
AngleDirection of meteor movement (0° is up)
Ellipse AngleAngle of fitted ellipse for motion region
DTTime from detection start to end (seconds)
SpeedLength / DT of meteor
SizeMaximum motion area per frame (pixels)
FlatteningFlattening ratio of ellipse of motion region
MoveNumber of movements in motion detected area
LengthEuclidean distance moved by meteor: SQRT((XE - XS)^2 + (YE - YS)^2)
R, G, BMeteor color (RGB): Maximum brightness in motion-detected area
* May be inaccurate when passing lasers or bright stars, fireballs, etc.
R_T, G_T, B_TTrail color (RGB) (v6.7+): Max brightness point on line from start to end with greatest RGB difference
* May be inaccurate when passing lasers or bright stars, fireballs, etc.
R_BG, G_BG, B_BGBackground color (RGB) (v6.7+): Minimum brightness in or around +/-5 pixels
* May be inaccurate when passing lasers or bright stars, fireballs, etc.
BrightMax brightness in motion-detected area (grayscale)
DarkMin brightness in motion-detected area (grayscale)
ObjMax BW brightness in and around motion area (+/-5 pixels)
BGMin BW brightness in and around motion area (+/-5 pixels)
VerVersion info when data was obtained

Meteor Shower Information

METEOR ABBRAbbreviation
METEOR NAMEMeteor Shower Name
METEOR_NAME_ENMeteor Shower Name (English)
DateTimeMeteor Shower Date (YYYY/MM/DD)
RARadiant Right Ascension
DECRadiant Declination
NOTERemarks