UAL817 United
Airbus A320 232 · N452UA · SFO → ?
· 0:14Quality 40shortlost locklow zoomside-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
- 37%
- First lockfrom target selected
- 8.9 s
- Centring, medianaz / el while locked
- 0.36° / 0.22°
- Centring, 90th pctaz / el while locked
- 1.24° / 0.90°
- Tightest field of viewhorizontal
- 9.4°
- Time to 8°from first lock
- —
- Time to tightestfrom first lock
- 5.1 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
- 3.06°
- Largest correctionvision vs prediction
- 0.93°
- Zoom steps
- 31
Aircraft & route
- Flight
- UAL817
- Registration
- N452UA
- Type
- Airbus A320 232
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 220 kt
- Altitude at closest
- 3,850 ft
- Vertical rate
- +512 ft/min
- Category
- A3
- ICAO hex
- a57b4d
Pass geometry
- Max elevation
- 26.2°
- Elevation at start → end
- 23.7° → 25.8°
- Azimuth at start → end
- 317° NW → 282° WNW
- Closest-approach azimuth
- 294° WNW
- Minimum slant range
- 2.7 km
- Heading at closest
- 205° SSW
- Aspect at closest
- side-on (89°)
- Turn
- straight (0°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 0:14 (14.1 s)
- Lock
- 37%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-16f — A/B mountPrior, cand diagnostics, clip-short flag
- Commit
- 3ea7ff5
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 7.0 MB · 14.0 s · offset -1.1 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
- -0.1
- 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