UAL611 United
Boeing 737NG 824/W · N37281 · SFO → ?
· 1:33side-onturned left 46°Dead-zone wrap
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
- 88%
- First lockfrom target selected
- 4.6 s
- Centring, medianaz / el while locked
- 0.74° / 0.51°
- Centring, 90th pctaz / el while locked
- 2.97° / 1.06°
- Tightest field of viewhorizontal
- 10.8°
- Time to 8°from first lock
- —
- Time to tightestfrom first lock
- 0.0 s
- Time at telefield of view ≤ 5.5°
- 0.0 s
- Jitter at teleaz / el, standard deviation
- —
- Swing at teleaz / el, peak to peak
- —
- Pan reversalsper 10 s at tele
- —
- Largest pan hopin any 1 s at tele
- —
- Largest tilt hopin any 1 s at tele
- —
- Pose error, mediancommand vs camera
- 0.93°
- Largest correctionvision vs prediction
- 1.28°
- Zoom steps
- 0
Aircraft & route
- Flight
- UAL611
- Registration
- N37281
- Type
- Boeing 737NG 824/W
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 324 kt
- Altitude at closest
- 9,800 ft
- Vertical rate
- +3,200 ft/min
- Category
- A3
- ICAO hex
- a43ec3
Pass geometry
- Max elevation
- 50.2°
- Elevation at start → end
- 19.1° → 21.6°
- Azimuth at start → end
- 337° NNW → 180° S
- Closest-approach azimuth
- 250° WSW
- Minimum slant range
- 3.9 km
- Heading at closest
- 165° SSE
- Aspect at closest
- side-on (84°)
- Turn
- turned left 46°
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 1:33 (93.3 s)
- Lock
- 88%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-13f — log which rule set the zoom (zw)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 46.5 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