UAL574 United
Boeing 737 MAX 9 · N17482 · SFO → ?
· 1:33Quality 83side-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −65%). Download
Trace
Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.
—FOV —az —el —pose —
Loading telemetry…
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
- 69%
- First lockfrom target selected
- 5.3 s
- Centring, medianaz / el while locked
- 0.86° / 0.31°
- Centring, 90th pctaz / el while locked
- 2.16° / 0.87°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 11.5 s
- Time to tightestfrom first lock
- 60.0 s
- Time at telefield of view ≤ 5.5°
- 11.1 s
- Jitter at teleaz / el, standard deviation
- 0.46° / 0.23°
- Swing at teleaz / el, peak to peak
- 1.57° / 0.87°
- Pan reversalsper 10 s at tele
- 1.8
- Largest pan hopin any 1 s at tele
- 3.46°
- Largest tilt hopin any 1 s at tele
- 1.40°
- Pose error, mediancommand vs camera
- 0.93°
- Largest correctionvision vs prediction
- 1.78°
- Zoom steps
- 95
Aircraft & route
- Flight
- UAL574
- Registration
- N17482
- Type
- Boeing 737 MAX 9
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 267 kt
- Altitude at closest
- 6,625 ft
- Vertical rate
- +2,880 ft/min
- Category
- A3
- ICAO hex
- a12b94
Pass geometry
- Max elevation
- 41.9°
- Elevation at start → end
- 19.6° → 16.4°
- Azimuth at start → end
- 343° NNW → 206° SSW
- Closest-approach azimuth
- 276° W
- Minimum slant range
- 3.0 km
- Heading at closest
- 193° SSW
- Aspect at closest
- side-on (83°)
- Turn
- straight (6°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:33 (93.0 s)
- Lock
- 69%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-12i — focus jumps only to trusted tele points; rate-steered setpoint; bias learned only when still
- Commit
- 68739f5+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 46.4 MB · 93.0 s · offset -1.1 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