skylight.

UAL35 United

Boeing 777 222ER · N792UA · SFO → KIX

· 1:01Quality 70side-on

3D replay

Software-steadied: the hops of the camera motor are smoothed out (plane wobble −73%). 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
56%
First lockfrom target selected
7.4 s
Centring, medianaz / el while locked
0.76° / 0.98°
Centring, 90th pctaz / el while locked
3.29° / 6.84°
Tightest field of viewhorizontal
4.1°
Time to 8°from first lock
45.3 s
Time to tightestfrom first lock
—
Time at telefield of view ≤ 5.5°
1.4 s
Jitter at teleaz / el, standard deviation
—
Swing at teleaz / el, peak to peak
—
Pan reversalsper 10 s at tele
0.0
Largest pan hopin any 1 s at tele
—
Largest tilt hopin any 1 s at tele
—
Pose error, mediancommand vs camera
1.11°
Largest correctionvision vs prediction
2.92°
Zoom steps
70

Aircraft & route

Flight
UAL35
Registration
N792UA
Type
Boeing 777 222ER (B772)
Airline
United
From
SFO · San Francisco
To
KIX · Osaka
Ground speed
196 kt
Altitude at closest
1,050 ft
Vertical rate
+2,560 ft/min
Category
A5
ICAO hex
aac136

Pass geometry

Max elevation
78.7°
Elevation at start → end
0.2° → 11.9°
Azimuth at start → end
116° ESE → 297° WNW
Closest-approach azimuth
21° NNE
Minimum slant range
351 m
Heading at closest
296° WNW
Aspect at closest
side-on (85°)
Turn
straight (2°)
Departure
Yes — climbing out after take-off
Zenith pass
No
Dead-zone wrap
No
Duration
1:01 (61.0 s)
Lock
56%

Build & tuning

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

Build
2026-10-16a — main b067f99 (review cleanup)
Commit
b067f99
Node
v22.22.2
Camera
TONGVEO 20x PTZ · 1920×1080 @ 30 fps
Clip
30.0 MB · 60.0 s · offset -0.7 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
-0.03
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