UAL969 United
Boeing 777 224ER · N79011 · AMS → SFO
· 0:37Quality 68lost lockside-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
- 56%
- First lockfrom target selected
- 6.1 s
- Centring, medianaz / el while locked
- 0.71° / 0.26°
- Centring, 90th pctaz / el while locked
- 2.53° / 0.60°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 5.6 s
- Time to tightestfrom first lock
- —
- Time at telefield of view ≤ 5.5°
- 11.3 s
- Jitter at teleaz / el, standard deviation
- 0.73° / 0.19°
- Swing at teleaz / el, peak to peak
- 2.01° / 0.61°
- Pan reversalsper 10 s at tele
- 0.9
- Largest pan hopin any 1 s at tele
- 2.40°
- Largest tilt hopin any 1 s at tele
- 1.28°
- Pose error, mediancommand vs camera
- 1.05°
- Largest correctionvision vs prediction
- 1.74°
- Zoom steps
- 38
Aircraft & route
- Flight
- UAL969
- Registration
- N79011
- Type
- Boeing 777 224ER
- Airline
- United
- From
- AMS · Amsterdam
- To
- SFO · San Francisco
- Ground speed
- 255 kt
- Altitude at closest
- 11,350 ft
- Vertical rate
- 0 ft/min
- Category
- A5
- ICAO hex
- aaba9a
Pass geometry
- Max elevation
- 30.2°
- Elevation at start → end
- 25.7° → 30.0°
- Azimuth at start → end
- 347° NNW → 28° NNE
- Closest-approach azimuth
- 21° NNE
- Minimum slant range
- 6.9 km
- Heading at closest
- 111° ESE
- Aspect at closest
- side-on (90°)
- Turn
- straight (0°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:37 (36.6 s)
- Lock
- 56%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14j — zoom re-sent when the lens never took it up
- Commit
- 4521bca
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 18.0 MB · 36.0 s · offset -0.9 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
- 0.51
- 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