Project Blue Book Mariana UFO Incident PDF

Read from the scan by GLM-OCR; expect the odd misread word.

## APPENDIX I

Let us define the following quantities:

A = altitude of the objects above the observer - arbitrary units.

h = altitude of the objects (the midpoint of their line of centers) above the horizon.in degrees.

L = distance between the objects - arbitrary units.

R = distance of the objects from the observer - arbitrary units.

T = time measure after initial observation in seconds.

V = velocity of the objects - arbitrary units.

$ \alpha = $ azimuth of line of sight between the observer and center point of the objects.

β Δ + δ.

x1 = angle between the line of centers of the objects and their direction of motion.

6 = angle between the perpendicular to the line of sight and the object's path.

$ \Delta = $ azimuth of direction of the object's path (heading).

$ \phi $ = angle between the initial line of sight and the line of sight at time T in radians or degrees.

$ \theta = $ angle subtended by the apparent separation of the two objects radians.

The zero subscript refers to the value of the quantity at the time of initial observation. Note that the initial separation may be "measured" before the initial elevation and azimuth since background objects (by which height and azimuth may be referenced) do not appear until frame #65.

Let us assume $ \beta, \xi, \gamma $ A, L and V to remain constant during the entire period of observation, i.e. constant configuration rectilinear motion. We denote this constant value by a zero subscript.

For simplicity we define the following dimensionless quantities.