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SWA956 Southwest Airlines

Boeing 737NG 7H4/W · N489WN

· 1:06Quality 85side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −71%). Download

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
68%
First lockfrom target selected
11.7 s
Centring, medianaz / el while locked
0.32° / 0.38°
Centring, 90th pctaz / el while locked
1.65° / 1.72°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
4.1 s
Time to tightestfrom first lock
7.3 s
Time at telefield of view ≤ 5.5°
16.6 s
Jitter at teleaz / el, standard deviation
0.34° / 0.28°
Swing at teleaz / el, peak to peak
2.42° / 1.94°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
1.37°
Largest tilt hopin any 1 s at tele
2.60°
Pose error, mediancommand vs camera
1.07°
Largest correctionvision vs prediction
2.50°
Zoom steps
37

Aircraft & route

Flight
SWA956
Registration
N489WN
Type
Boeing 737NG 7H4/W
Airline
Southwest Airlines
From
—
To
—
Ground speed
336 kt
Altitude at closest
11,025 ft
Vertical rate
+1,856 ft/min
Category
A3
ICAO hex
a60c09

Pass geometry

Max elevation
74.9°
Elevation at start → end
17.3° → 55.9°
Azimuth at start → end
21° NNE → 172° S
Closest-approach azimuth
105° ESE
Minimum slant range
3.5 km
Heading at closest
195° SSW
Aspect at closest
side-on (90°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:06 (66.3 s)
Lock
68%

Build & tuning

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

Build
2026-10-14e — feedforward in head axes
Commit
181d1fa+wip
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
33.0 MB · 66.0 s · offset -1.5 s
pursuit
velocity
maxLeadSec
3
panLatencySec
0.6
tiltLatencySec
0.4
rippleDeg
0.5
rippleTeleDeg
0.25
rateFloorDegPerDps
2.5
rateFloorMaxDeg
12
lockedSigmaDeg
0.35
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