UAL2177 United
Boeing 737NG 824/W · N54241 · SFO → ?
· 2:04Quality 97clip shortside-on
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −81%). 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
- 92%
- First lockfrom target selected
- 9.5 s
- Centring, medianaz / el while locked
- 0.12° / 0.10°
- Centring, 90th pctaz / el while locked
- 0.39° / 0.24°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 5.5 s
- Time to tightestfrom first lock
- 67.3 s
- Time at telefield of view ≤ 5.5°
- 103.5 s
- Jitter at teleaz / el, standard deviation
- 0.23° / 0.16°
- Swing at teleaz / el, peak to peak
- 1.99° / 1.25°
- Pan reversalsper 10 s at tele
- 0.1
- Largest pan hopin any 1 s at tele
- 3.63°
- Largest tilt hopin any 1 s at tele
- 3.00°
- Pose error, mediancommand vs camera
- 0.56°
- Largest correctionvision vs prediction
- 1.25°
- Zoom steps
- 34
Aircraft & route
- Flight
- UAL2177
- Registration
- N54241
- Type
- Boeing 737NG 824/W
- Airline
- United
- From
- SFO
- To
- —
- Ground speed
- 281 kt
- Altitude at closest
- 7,300 ft
- Vertical rate
- +3,008 ft/min
- Category
- A3
- ICAO hex
- a6e258
Pass geometry
- Max elevation
- 34.1°
- Elevation at start → end
- 18.5° → 13.2°
- Azimuth at start → end
- 328° NNW → 201° SSW
- Closest-approach azimuth
- 269° W
- Minimum slant range
- 4.0 km
- Heading at closest
- 188° S
- Aspect at closest
- side-on (82°)
- Turn
- straight (7°)
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- No
- Duration
- 2:04 (123.5 s)
- Lock
- 92%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-16c — mount prior carried to the next target (silhouette reach reverted)
- Commit
- 8649c7d
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 70.1 MB · 103.4 s · offset -1.5 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