Quite a remarkable sight, in no way was this an aircraft, fireworks etc.
Location
Address
Arnold, MD
Latitude
39° 3' 36.31'' N (39.060087°)
Longitude
76° 31' 23.06'' W (-76.523072°)
Elevation
6.440048m
Time and Duration
Local Date & Time
2023-02-19 18:35 EST
UT Date & Time
2023-02-19 23:35 UT
Duration
≈1.5s
Direction
Moving direction
From down left to up right
Descent Angle
75°
Moving
Facing azimuth
130.1°
First azimuth
127.11°
First elevation
45°
Last azimuth
218.66°
Last elevation
40°
Brightness and color
Stellar Magnitude
-10
Color
Light Green
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
Green light grew in size going left to right while facing SE then terminated without any explosion, hot tub pump jets was running at the time so any noise would have been muffled.
