UAL984 United
Boeing 777 224ER · N77022 · CDG → SFO
· 0:33Quality 75side-on
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
- 58%
- First lockfrom target selected
- 6.8 s
- Centring, medianaz / el while locked
- 0.79° / 0.21°
- Centring, 90th pctaz / el while locked
- 5.43° / 0.88°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 8.0 s
- Time to tightestfrom first lock
- —
- Time at telefield of view ≤ 5.5°
- 5.2 s
- Jitter at teleaz / el, standard deviation
- 0.01° / 0.03°
- Swing at teleaz / el, peak to peak
- 0.02° / 0.06°
- Pan reversalsper 10 s at tele
- 3.9
- Largest pan hopin any 1 s at tele
- 2.76°
- Largest tilt hopin any 1 s at tele
- 1.64°
- Pose error, mediancommand vs camera
- 1.21°
- Largest correctionvision vs prediction
- 1.32°
- Zoom steps
- 38
Aircraft & route
- Flight
- UAL984
- Registration
- N77022
- Type
- Boeing 777 224ER
- Airline
- United
- From
- CDG · Paris
- To
- SFO · San Francisco
- Ground speed
- 265 kt
- Altitude at closest
- 11,300 ft
- Vertical rate
- -64 ft/min
- Category
- A5
- ICAO hex
- aa6bc0
Pass geometry
- Max elevation
- 68.5°
- Elevation at start → end
- 68.5° → 34.0°
- Azimuth at start → end
- 71° ENE → 126° SE
- Closest-approach azimuth
- 71° ENE
- Minimum slant range
- 3.7 km
- Heading at closest
- 140° SE
- Aspect at closest
- side-on (69°)
- Turn
- straight (0°)
- Departure
- No
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:33 (33.2 s)
- Lock
- 58%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14b — steady overhead park, zoom travel guard
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 16.5 MB · 33.0 s · offset -0.8 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