We were not sure what we had seen, but looked it up and it sounded like what we just saw was a fireball given the description. Amazing!
I am not sure I put the angles exactly right on your system but did the best I could
Location
Address
Montgomery Village, MD
Latitude
39° 9' 58.18'' N (39.16616°)
Longitude
77° 12' 7.63'' W (-77.20212°)
Elevation
121.159m
Time and Duration
Local Date & Time
2017-06-25 23:55 EDT
UT Date & Time
2017-06-26 03:55 UT
Duration
≈1.5s
Direction
Moving direction
From up left to down right
Descent Angle
110°
Moving
Facing azimuth
280.95°
First azimuth
267.1°
First elevation
53°
Last azimuth
341.34°
Last elevation
42°
Brightness and color
Stellar Magnitude
-16
Color
Orange, Light Yellow, Red- started off with a brighter white/yellow and looked like an orange and red tail
