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SKW5460 SkyWest

Embraer EMB-175 LR · N140SY · SFO → ?

· 1:49Quality 85side-onturned left 44°Dead-zone wrap

3D replay

Trace

Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.

—FOV —az —el —pose —
Lock

Events

Tracking metrics

How well the camera kept the aircraft centred. Tap a metric for what it means and what good looks like.

Lockshare of the pass
86%
First lockfrom target selected
9.1 s
Centring, medianaz / el while locked
0.14° / 0.20°
Centring, 90th pctaz / el while locked
0.57° / 0.59°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
6.4 s
Time to tightestfrom first lock
67.9 s
Time at telefield of view ≤ 5.5°
65.2 s
Jitter at teleaz / el, standard deviation
0.20° / 0.22°
Swing at teleaz / el, peak to peak
1.78° / 1.19°
Pan reversalsper 10 s at tele
0.5
Largest pan hopin any 1 s at tele
7.54°
Largest tilt hopin any 1 s at tele
6.48°
Pose error, mediancommand vs camera
0.80°
Largest correctionvision vs prediction
0.78°
Zoom steps
41

Aircraft & route

Flight
SKW5460
Registration
N140SY
Type
Embraer EMB-175 LR
Airline
SkyWest
From
SFO
To
—
Ground speed
285 kt
Altitude at closest
6,575 ft
Vertical rate
+2,240 ft/min
Category
A3
ICAO hex
a0a457

Pass geometry

Max elevation
58.9°
Elevation at start → end
19.0° → 15.3°
Azimuth at start → end
344° NNW → 177° S
Closest-approach azimuth
264° W
Minimum slant range
2.4 km
Heading at closest
177° S
Aspect at closest
side-on (87°)
Turn
turned left 44°
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
Yes — pan pre-positioned across the stop
Duration
1:49 (109.2 s)
Lock
86%

Build & tuning

The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.

Build
2026-10-15q — drive speed latched at the lens position; measured speed bytes only; auto-cal keeps gains
Commit
44f2d6a
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
53.5 MB · 109.0 s · offset -1.1 s
pursuit
velocity
maxLeadSec
3
panLatencySec
0.6
tiltLatencySec
0.4
rippleDeg
0.5
rippleTeleDeg
0.25
maxSpeedStepFwps
0.45
speedReachFrac
0.8
lockedSigmaDeg
0.35
sigmaGrowthDps
0.1
aimLeadSec
-0.11
correctionSlewDps
2.5
kp
1
ki
0.6

This clip and poster are © Skylight (Cameron Paczek): free for non-commercial use with credit to skylightceiling.com, not MIT. License