UAL4195 United
Boeing 737NG 824/W · N78524 · SFO → ?
· 1:20Quality 72side-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
- 7.1 s
- Centring, medianaz / el while locked
- 0.96° / 0.80°
- Centring, 90th pctaz / el while locked
- 4.13° / 10.97°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 47.2 s
- Time to tightestfrom first lock
- 60.5 s
- Time at telefield of view ≤ 5.5°
- 4.4 s
- Jitter at teleaz / el, standard deviation
- —
- Swing at teleaz / el, peak to peak
- —
- Pan reversalsper 10 s at tele
- 0.0
- Largest pan hopin any 1 s at tele
- 1.41°
- Largest tilt hopin any 1 s at tele
- 1.36°
- Pose error, mediancommand vs camera
- 1.81°
- Largest correctionvision vs prediction
- 3.85°
- Zoom steps
- 70
Aircraft & route
- Flight
- UAL4195
- Registration
- N78524
- Type
- Boeing 737NG 824/W (B738)
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 170 kt
- Altitude at closest
- 2,275 ft
- Vertical rate
- +3,392 ft/min
- Category
- A3
- ICAO hex
- aaa5d4
Pass geometry
- Max elevation
- 79.2°
- Elevation at start → end
- 0.4° → 13.4°
- Azimuth at start → end
- 116° ESE → 298° WNW
- Closest-approach azimuth
- 15° NNE
- Minimum slant range
- 736 m
- Heading at closest
- 297° WNW
- Aspect at closest
- side-on (78°)
- Turn
- straight (4°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:20 (79.5 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
- 2026-10-14d — park, zoom guard v2, visionMiss log
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 40.0 MB · 80.0 s · offset -1.7 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