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SWA854 Southwest Airlines

Boeing 737NG 7H4/W · N489WN

· 1:28Quality 95side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −76%). 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
92%
First lockfrom target selected
5.1 s
Centring, medianaz / el while locked
0.14° / 0.18°
Centring, 90th pctaz / el while locked
0.49° / 0.61°
Tightest field of viewhorizontal
3.4°
Time to 8°from first lock
2.2 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
57.6 s
Jitter at teleaz / el, standard deviation
0.24° / 0.27°
Swing at teleaz / el, peak to peak
1.68° / 1.53°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
3.63°
Largest tilt hopin any 1 s at tele
3.36°
Pose error, mediancommand vs camera
1.00°
Largest correctionvision vs prediction
4.81°
Zoom steps
22

Aircraft & route

Flight
SWA854
Registration
N489WN
Type
Boeing 737NG 7H4/W
Airline
Southwest Airlines
From
—
To
—
Ground speed
288 kt
Altitude at closest
10,150 ft
Vertical rate
+4,096 ft/min
Category
A3
ICAO hex
a60c09

Pass geometry

Max elevation
70.1°
Elevation at start → end
20.1° → 25.6°
Azimuth at start → end
1° N → 199° SSW
Closest-approach azimuth
276° W
Minimum slant range
3.3 km
Heading at closest
191° S
Aspect at closest
side-on (85°)
Turn
straight (4°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:28 (87.6 s)
Lock
92%

Build & tuning

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

Build
2026-10-16e — A/B mountPrior + candidate diagnostics
Commit
ffe4b92
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
44.0 MB · 88.0 s · offset -1.8 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
-0.1
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