UAL1244 United
Boeing 737 MAX 9 · N87442 · SFO → ?
· 0:39Quality 86side-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −75%). 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
- 81%
- First lockfrom target selected
- 7.0 s
- Centring, medianaz / el while locked
- 0.73° / 0.22°
- Centring, 90th pctaz / el while locked
- 1.68° / 0.66°
- Tightest field of viewhorizontal
- 5.0°
- Time to 8°from first lock
- 3.4 s
- Time to tightestfrom first lock
- 6.4 s
- Time at telefield of view ≤ 5.5°
- 2.1 s
- Jitter at teleaz / el, standard deviation
- 0.55° / 0.25°
- Swing at teleaz / el, peak to peak
- 1.58° / 0.63°
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 2.02°
- Largest tilt hopin any 1 s at tele
- 2.55°
- Pose error, mediancommand vs camera
- 1.73°
- Largest correctionvision vs prediction
- 0.70°
- Zoom steps
- 24
Aircraft & route
- Flight
- UAL1244
- Registration
- N87442
- Type
- Boeing 737 MAX 9
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 269 kt
- Altitude at closest
- 6,675 ft
- Vertical rate
- +2,624 ft/min
- Category
- A3
- ICAO hex
- ac0831
Pass geometry
- Max elevation
- 35.6°
- Elevation at start → end
- 18.9° → 33.2°
- Azimuth at start → end
- 330° NNW → 246° WSW
- Closest-approach azimuth
- 267° W
- Minimum slant range
- 3.5 km
- Heading at closest
- 187° S
- Aspect at closest
- side-on (80°)
- Turn
- straight (4°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:39 (39.2 s)
- Lock
- 81%
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
- 19.5 MB · 39.0 s · offset -0.8 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