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UAL1484 United

Boeing 737-8 · N27283 · SFO → ?

· 0:27Quality 70side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −54%). 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
53%
First lockfrom target selected
7.0 s
Centring, medianaz / el while locked
0.32° / 0.35°
Centring, 90th pctaz / el while locked
1.38° / 0.53°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
4.0 s
Time to tightestfrom first lock
8.2 s
Time at telefield of view ≤ 5.5°
4.3 s
Jitter at teleaz / el, standard deviation
0.47° / 0.22°
Swing at teleaz / el, peak to peak
1.13° / 0.61°
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
4.42°
Largest tilt hopin any 1 s at tele
0.97°
Pose error, mediancommand vs camera
1.12°
Largest correctionvision vs prediction
0.70°
Zoom steps
30

Aircraft & route

Flight
UAL1484
Registration
N27283
Type
Boeing 737-8
Airline
United
From
SFO
To
—
Ground speed
287 kt
Altitude at closest
7,700 ft
Vertical rate
+2,624 ft/min
Category
A3
ICAO hex
a2b176

Pass geometry

Max elevation
30.3°
Elevation at start → end
30.3° → 23.5°
Azimuth at start → end
264° W → 225° SW
Closest-approach azimuth
264° W
Minimum slant range
4.8 km
Heading at closest
185° S
Aspect at closest
side-on (79°)
Turn
straight (0°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
0:27 (26.8 s)
Lock
53%

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
13.5 MB · 27.0 s · offset -1.0 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