UAL1509 United
Boeing 737 MAX 9 · B737-M9 · SFO → HNL
· 1:01Quality 78side-onOverhead
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −70%). 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
- 50%
- First lockfrom target selected
- 6.7 s
- Centring, medianaz / el while locked
- 0.45° / 0.61°
- Centring, 90th pctaz / el while locked
- 4.56° / 6.78°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 41.3 s
- Time to tightestfrom first lock
- 49.4 s
- Time at telefield of view ≤ 5.5°
- 7.7 s
- Jitter at teleaz / el, standard deviation
- 0.35° / 0.18°
- Swing at teleaz / el, peak to peak
- 1.30° / 0.71°
- Pan reversalsper 10 s at tele
- 3.9
- Largest pan hopin any 1 s at tele
- 0.74°
- Largest tilt hopin any 1 s at tele
- 1.46°
- Pose error, mediancommand vs camera
- 1.55°
- Largest correctionvision vs prediction
- 3.26°
- Zoom steps
- 58
Aircraft & route
- Flight
- UAL1509
- Registration
- B737-M9
- Type
- Boeing 737 MAX 9 (B39M)
- Airline
- United
- From
- SFO · San Francisco
- To
- HNL · Honolulu
- Ground speed
- 187 kt
- Altitude at closest
- 1,075 ft
- Vertical rate
- +2,112 ft/min
- Category
- A3
- ICAO hex
- a5d319
Pass geometry
- Max elevation
- 71.7°
- Elevation at start → end
- -0.1° → 13.7°
- Azimuth at start → end
- 120° ESE → 297° WNW
- Closest-approach azimuth
- 213° SSW
- Minimum slant range
- 381 m
- Heading at closest
- 299° WNW
- Aspect at closest
- side-on (87°)
- Turn
- straight (0°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- Yes — camera flipped over the top
- Dead-zone wrap
- No
- Duration
- 1:01 (60.5 s)
- Lock
- 50%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14k — loop integrates real tick time; aim lead −0.2 s
- Commit
- 33c2b35-k
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 30.5 MB · 61.0 s · offset -1.8 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
- -0.28
- 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