UAL1509 United
Boeing 737 MAX 9 · N17443 · SFO → HNL
· 1:04Quality 81side-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −78%). 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
- 57%
- First lockfrom target selected
- 22.2 s
- Centring, medianaz / el while locked
- 0.38° / 0.43°
- Centring, 90th pctaz / el while locked
- 3.96° / 5.10°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 27.5 s
- Time to tightestfrom first lock
- 39.2 s
- Time at telefield of view ≤ 5.5°
- 7.3 s
- Jitter at teleaz / el, standard deviation
- 0.20° / 0.22°
- Swing at teleaz / el, peak to peak
- 0.71° / 0.83°
- Pan reversalsper 10 s at tele
- 1.4
- Largest pan hopin any 1 s at tele
- 1.53°
- Largest tilt hopin any 1 s at tele
- 1.83°
- Pose error, mediancommand vs camera
- 0.91°
- Largest correctionvision vs prediction
- 1.77°
- Zoom steps
- 30
Aircraft & route
- Flight
- UAL1509
- Registration
- N17443
- Type
- Boeing 737 MAX 9 (B39M)
- Airline
- United
- From
- SFO · San Francisco
- To
- HNL · Honolulu
- Ground speed
- 180 kt
- Altitude at closest
- 1,225 ft
- Vertical rate
- +1,984 ft/min
- Category
- A3
- ICAO hex
- a12b09
Pass geometry
- Max elevation
- 74.3°
- Elevation at start → end
- 0.0° → 13.6°
- Azimuth at start → end
- 116° ESE → 299° WNW
- Closest-approach azimuth
- 29° NNE
- Minimum slant range
- 430 m
- Heading at closest
- 298° WNW
- Aspect at closest
- side-on (89°)
- Turn
- straight (2°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:04 (64.3 s)
- Lock
- 57%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-13j — full 3.4 deg tele for slow planes (limit only above 0.5 deg/s)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 31.4 MB · 64.9 s · offset -2.7 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