UAL1668 United
Boeing 737NG 824/W · N35204 · SFO → ?
· 1:07Quality 68lost lockside-onturned left 21°
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −53%). 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
- 51%
- First lockfrom target selected
- 16.9 s
- Centring, medianaz / el while locked
- 1.06° / 0.26°
- Centring, 90th pctaz / el while locked
- 2.32° / 0.91°
- Tightest field of viewhorizontal
- 4.1°
- Time to 8°from first lock
- 12.2 s
- Time to tightestfrom first lock
- 14.6 s
- Time at telefield of view ≤ 5.5°
- 16.1 s
- Jitter at teleaz / el, standard deviation
- 1.12° / 0.33°
- Swing at teleaz / el, peak to peak
- 4.06° / 0.96°
- Pan reversalsper 10 s at tele
- 1.2
- Largest pan hopin any 1 s at tele
- 7.21°
- Largest tilt hopin any 1 s at tele
- 1.92°
- Pose error, mediancommand vs camera
- 1.17°
- Largest correctionvision vs prediction
- 2.00°
- Zoom steps
- 50
Aircraft & route
- Flight
- UAL1668
- Registration
- N35204
- Type
- Boeing 737NG 824/W
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 296 kt
- Altitude at closest
- 9,325 ft
- Vertical rate
- +3,392 ft/min
- Category
- A3
- ICAO hex
- a3eeb0
Pass geometry
- Max elevation
- 33.3°
- Elevation at start → end
- 18.8° → 26.0°
- Azimuth at start → end
- 328° NNW → 226° SW
- Closest-approach azimuth
- 265° W
- Minimum slant range
- 5.1 km
- Heading at closest
- 187° S
- Aspect at closest
- side-on (78°)
- Turn
- turned left 21°
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 1:07 (66.8 s)
- Lock
- 51%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14i — zoom sigma grows after lock loss (0.1°/s)
- Commit
- 181d1fa+wip
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 33.6 MB · 67.0 s · offset -1.4 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
- 0.59
- 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