UAL2409 United
Boeing 737NG 824/W · N18223
· 2:18Quality 90lost lockside-onturned right 21°
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −79%). 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
- 83%
- First lockfrom target selected
- 10.0 s
- Centring, medianaz / el while locked
- 0.16° / 0.12°
- Centring, 90th pctaz / el while locked
- 0.52° / 0.27°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 4.5 s
- Time to tightestfrom first lock
- 88.8 s
- Time at telefield of view ≤ 5.5°
- 78.1 s
- Jitter at teleaz / el, standard deviation
- 0.30° / 0.17°
- Swing at teleaz / el, peak to peak
- 1.68° / 0.80°
- Pan reversalsper 10 s at tele
- 0.3
- Largest pan hopin any 1 s at tele
- 7.13°
- Largest tilt hopin any 1 s at tele
- 1.86°
- Pose error, mediancommand vs camera
- 0.66°
- Largest correctionvision vs prediction
- 1.23°
- Zoom steps
- 42
Aircraft & route
- Flight
- UAL2409
- Registration
- N18223
- Type
- Boeing 737NG 824/W
- Airline
- United
- From
- —
- To
- —
- Ground speed
- 301 kt
- Altitude at closest
- 11,350 ft
- Vertical rate
- -128 ft/min
- Category
- A3
- ICAO hex
- a14ad4
Pass geometry
- Max elevation
- 69.9°
- Elevation at start → end
- 26.7° → 12.7°
- Azimuth at start → end
- 330° NNW → 144° SE
- Closest-approach azimuth
- 50° NE
- Minimum slant range
- 3.7 km
- Heading at closest
- 140° SE
- Aspect at closest
- side-on (90°)
- Turn
- turned right 21°
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 2:18 (138.3 s)
- Lock
- 83%
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
- 69.5 MB · 139.0 s · offset -1.6 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
- -0.2
- 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