ARTEMIS III

Mission Complete — Post-Splashdown

· Dashboard switches to archived/replay mode following splashdown
· Mission complete overlay with full mission stats, crew, and mission firsts
· Splashdown countdown removed — mission complete modal takes over
· Telemetry tab shows archived state with final spacecraft data
· Sidebar countdown hidden post-mission
· Corrected AROW splashdown timestamp to 00:07 UTC (8:07 PM EDT)

Splashdown Day

· Splashdown countdown overlay — FUI-styled modal with live hours/minutes/seconds countdown
· Countdown auto-updates mission phase as splashdown approaches (Return Coast → CM/SM Separation → Entry → Chute Deploy → Splashdown)
· Click "Enter Dashboard" to minimise into a compact floating widget (bottom-right), click to expand back
· Simulated telemetry fallback — when NASA AROW is unavailable, generates physically plausible attitude, rates, SAW angles and gimbal data
· Simulated data varies with mission phase (BBQ roll, return coast, entry prep) with subtle sinusoidal drift
· Orange notice banner on telemetry tab when running on simulated data
· Automatic switch back to live data if AROW recovers
· Local 10-second update loop for simulated telemetry (API polled at 60s to check for real data)

· Auto-rotate option — automatically cycles between Flight Path and Telemetry tabs every 60 seconds
· AUTO badge in the tab bar shows when rotation is active
· Toggle on/off in Settings, pauses for 5 minutes when you manually switch tabs
· Unified API — all data sources now served through a single authenticated endpoint
· Reduced network polling to 60-second intervals across all data sources
· Theme-aware 3D scenes — Orion model and trajectory colours update with theme selection
· Earth atmosphere glow now matches the active colour theme
· RCS thruster firing state uses theme-aware status colour
· All asset URLs now served locally from track-artemis.com

New Telemetry Tab — Live Spacecraft Systems

· New dedicated Telemetry tab (tab 02) with live AROW spacecraft data
· Real-time attitude readouts (roll, pitch, yaw) with artificial horizon indicator
· Angular rate displays with bidirectional bars and thruster firing detection
· 3D Orion model driven by live AROW quaternion data with starfield background
· Drag to orbit the model, scroll to zoom, double-click to reset to live attitude
· Solar array wing angles (SAW 1–4) with rotation bars and estimated total power output
· Compact comm link panel: antenna gimbal positions, one-way light time, spacecraft mode
· Full RCS thruster schematic — aft view with all 24 thrusters mapped by name
· Individual thruster firing states from AROW data shown in real time (green = firing)
· Status hex bytes (GRP1/GRP2) displayed below the RCS diagram
· Orion MPCV specs table with two-column layout
· Orbital telemetry strip (distance to Earth/Moon, velocity, progress, comms delay) moved here from Flight Path tab
· AROW connection status indicator with live/error states and timestamp

AROW Data Proxy

· Server-side PHP proxy (arow-proxy.php) to bypass CORS restrictions
· Supports both SSE streaming and JSON polling modes
· Polling at 3-second intervals with automatic SSE upgrade attempt
· Graceful fallback if SSE connection fails after 3 retries

Tab Restructure

· Telemetry tab renamed to Flight Path (3D trajectory and playback)
· New Telemetry tab at position 02 for all live spacecraft data
· Vehicle tab removed — Orion specs now live in the Telemetry tab
· Tab order: Flight Path, Telemetry, Timeline, Crew & Mission, Feeds, Gallery

Settings Panel

· New settings modal accessible via ☰ button in the top bar
· Settings button remains visible on mobile
· Colour scheme picker moved into settings panel
· Three colour themes: Default (Cyan), Ares (Orange), Gold

Skip Loader Preference

· Toggle to skip the boot sequence on return visits
· Persists across sessions via localStorage
· Skip button added to loading screen for one-off use

Crew & Mission Tab — Layout Overhaul

· Crew cards now in a 2×2 grid layout
· Two-column split below crew: live milestones on the left, records & parameters on the right
· Both columns independently scrollable
· Stacks to single column on mobile

Real-time Mission Milestones

· 29 timestamped events from liftoff to splashdown
· Newest events at the top
· Future events hidden — timeline grows as milestones are reached
· Active milestone highlighted with cyan accent
· Shows UTC time, event description, and MET for each milestone
· Sticky header stays fixed while events scroll
· Updates every 30 seconds

Branding

· Renamed to A.T.L.A.S (Artemis Telemetry & Live Acquisition System)
· Designed mission badge logo
· Shaded Orion spacecraft in Artemis II patch palette
· Added PNG favicon support for iOS and PWA

Trajectory & Telemetry

· Real JPL Horizons data — trajectory built from actual ephemeris data points
· Fixed Orion tracking along the correct path
· Fixed waypoint positions — Closest Approach, Max Distance and Far Side LOS now sit at the Moon
· Fixed LEO/HEO orbits — properly scaled, no longer pass through Earth
· Fixed return approach — smooth curve back to Earth
· Fixed Orion orientation — nose faces forward
· Renamed Trajectory tab to Telemetry

DSN Live Tracking

· Live NASA Deep Space Network dish data
· Shows active dishes tracking Artemis II
· Dish name, site, azimuth, elevation, signal data
· Round-trip light time readout

Image Gallery

· Pulls crew photos from NASA Journey to the Moon gallery
· Strict filtering for in-flight images only
· Sorted newest first
· Lightbox with close button

Vehicle Tab

· Split into SLS Block 1 and Orion — Integrity sub-tabs
· Added SLS Sketchfab 3D model
· Both models lazy-loaded to avoid heavy page load

About Modal

· ATLAS logo, data sources, telemetry explanation, accuracy disclaimer

Visitor Tracking

· Cookieless tracking — active viewers and total visits in bottom bar

Social & Meta

· Open Graph and Twitter Card tags
· Social share image support

UI Refinements

· Mission phase label in orange, status in green
· Mobile: condensed header, responsive gallery grid
· About button visible on mobile

A.T.L.A.S (Artemis Telemetry & Live Acquisition System) is an unofficial real-time tracking dashboard for NASA's Artemis II — the first crewed lunar flyby since Apollo 17 in December 1972. It visualises live spacecraft telemetry, trajectory data and mission status using publicly available NASA data sources.

Spacecraft distance, velocity and position are derived from JPL Horizons ephemeris data, updated in real-time when online. When offline, the tracker interpolates from pre-computed trajectory points. The 3D trajectory uses real orbital mechanics data with Chaikin curve smoothing for visual clarity.

This is an unofficial tracker built for educational and enthusiast purposes. While it uses genuine NASA data sources, it is not affiliated with NASA, JPL or the Artemis programme. For official mission tracking, visit NASA AROW.

Michael Overton · overton.cloud