SWA4959 Southwest Airlines
Boeing 737MAX 8 · N8812Q · SFO → ?
· 2:22side-onturned left 67°Dead-zone wrap
Software-steadied: the hops of the camera motor are smoothed out (plane wobble −70%). Download
Trace
Where the aircraft sat in the frame, second by second. Click the chart to jump the video there.
—FOV —az —el —pose —
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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
- 87%
- First lockfrom target selected
- 6.5 s
- Centring, medianaz / el while locked
- 0.14° / 0.12°
- Centring, 90th pctaz / el while locked
- 0.40° / 0.33°
- Tightest field of viewhorizontal
- 3.4°
- Time to 8°from first lock
- 5.7 s
- Time to tightestfrom first lock
- 102.4 s
- Time at telefield of view ≤ 5.5°
- 86.4 s
- Jitter at teleaz / el, standard deviation
- 0.22° / 0.15°
- Swing at teleaz / el, peak to peak
- 1.50° / 1.01°
- Pan reversalsper 10 s at tele
- 0.2
- Largest pan hopin any 1 s at tele
- 6.44°
- Largest tilt hopin any 1 s at tele
- 2.18°
- Pose error, mediancommand vs camera
- 0.74°
- Largest correctionvision vs prediction
- 0.84°
- Zoom steps
- 19
Aircraft & route
- Flight
- SWA4959
- Registration
- N8812Q
- Type
- Boeing 737MAX 8
- Airline
- Southwest Airlines
- From
- SFO
- To
- —
- Ground speed
- 304 kt
- Altitude at closest
- 10,000 ft
- Vertical rate
- +2,752 ft/min
- Category
- A3
- ICAO hex
- ac2439
Pass geometry
- Max elevation
- 35.7°
- Elevation at start → end
- 17.5° → 13.7°
- Azimuth at start → end
- 323° NW → 165° SSE
- Closest-approach azimuth
- 238° WSW
- Minimum slant range
- 5.2 km
- Heading at closest
- 156° SSE
- Aspect at closest
- side-on (82°)
- Turn
- turned left 67°
- Departure
- Yes — climbing out after take-off
- Zenith pass
- No
- Dead-zone wrap
- Yes — pan pre-positioned across the stop
- Duration
- 2:22 (142.3 s)
- Lock
- 87%
Build & tuning
The tracker build that flew this pass and the live settings that mattered, so passes can be compared across changes.
- Build
- 2026-10-14m — upstream carries fields missing from one poll
- Commit
- 5b2d779
- Node
- v22.22.2
- Camera
- TONGVEO 20x PTZ · 1920×1080 @ 30 fps
- Clip
- 71.1 MB · 142.0 s · offset -0.8 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
- -0.16
- 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