EARENDIL-1 Passes
Over Brisbane
Predicted pass geometry, viewing conditions, and beam footprint data for Brisbane when EARENDIL-1 — the first commercial orbital mirror — launches in mid-2026. From 27.5°S in the subtropics, EARENDIL-1 will reach exceptionally high elevation — up to ~75° near the zenith — and appears to rise in the NW and transit toward the NE, opposite to northern-hemisphere observers.
What to Expect in Brisbane
What EARENDIL-1 Will Look Like from Brisbane
From Brisbane, EARENDIL-1 passes will appear as a fast-moving point of light crossing the sky in approximately 3–4 minutes. At peak brightness it will reach magnitude ~−4 — comparable to Venus at maximum and clearly visible even from the light-polluted CBD. With its higher peak elevation at this latitude, it will pass close to the zenith, making it one of the brightest objects in the Brisbane sky during a pass.
The mirror is steerable — between targeted commercial passes, Reflect Orbital tilts it away from Earth, making it much dimmer or invisible. During an active commercial pass you'll see a sudden brightening as the beam angle locks onto the target region. The pass ends abruptly when the mirror tilts away again.
Unlike a steady satellite, EARENDIL-1 may show subtle brightness variations as the mirror adjusts its aim. Watch for a brief period of maximum brightness near the peak of the pass when the geometry is optimal — this is when the 5km ground footprint is directly beneath the mirror at closest approach.
Track EARENDIL-1 from Brisbane at Launch
OrbitalNodes.ai will provide real-time pass predictions for Brisbane from the moment EARENDIL-1's orbital data is published. No app download required — runs entirely in your browser with GPS-accurate directions.
◈ OPEN ORBITALNODES.AISpace Mirror Questions — Brisbane
How bright will EARENDIL-1 appear from Brisbane?
At peak overhead passes, EARENDIL-1 is designed to reach magnitude ~−4 — comparable to Venus at maximum brightness and clearly visible from anywhere in Brisbane regardless of light pollution. From Brisbane's latitude the peak altitude is near the zenith on best passes, which makes the mirror appear even brighter than it does from higher-latitude cities. Between commercial illumination passes, Reflect Orbital will tilt the mirror away from Earth, reducing brightness significantly.
How high will EARENDIL-1 appear from Brisbane?
From 27.5°S in the Southern Hemisphere subtropics, EARENDIL-1 can reach ~75° elevation — nearly at the zenith on the best passes. Brisbane's lower latitude (closer to the equator than Sydney or Melbourne) gives it a higher peak elevation, which means longer viewing windows and brighter mirror appearance. Passes rise in the NW and track toward the NE, opposite to the direction seen from northern-hemisphere observers. Exact peak elevation varies pass by pass with orbital geometry.
When is the best time to see it from Brisbane?
April through October (southern hemisphere autumn/winter). Brisbane's dry season (May–September) delivers exceptional transparency with consistently clear evenings and mild temperatures. Summer (November–March) brings tropical afternoon storms, monsoonal cloud, and high humidity that limits viewing. The Glass House Mountains and Bunya Mountains offer dark-sky destinations within 1.5 hours drive. Passes during the southern winter are prime viewing time — both you and the mirror are in the right geometry for visibility.
Will the beam footprint hit Brisbane?
The 5km beam footprint could illuminate an area spanning South Bank, the CBD, and Fortitude Valley in a single pass — or alternatively cover the Story Bridge through to New Farm. Brisbane's tight river-bend geometry concentrates major landmarks inside one beam diameter. Whether any specific location falls in the footprint depends on Reflect Orbital's commercial contracts and targeting decisions. The beam is steerable so it can be directed to specific cities or regions for commercial lighting purposes.
Is EARENDIL-1 visible yet?
No — EARENDIL-1 has not launched yet. Reflect Orbital is targeting a mid-2026 launch. There is currently no space mirror in Earth orbit. OrbitalSolar.ai will update with live pass data from the moment orbital elements are published after launch. Check the mission tracker for current launch status.
Why does the mirror move differently from Brisbane than from northern cities?
From the Southern Hemisphere, all satellites — including EARENDIL-1 — appear to rise in the NW and transit toward the NE rather than the NW-to-NE arc mirrored across the meridian for northern observers. This is because Brisbane is south of the equator, so sun-synchronous satellites approach from the polar direction opposite to northern observers. The pass geometry is effectively a mirror image of what London or New York observers see.
How does Brisbane's river geography interact with the 5km beam?
The Brisbane River winds through the CBD in tight S-curves, concentrating South Bank, the CBD, Kangaroo Point cliffs, and New Farm into a compact inner-city zone. A 5km beam footprint easily covers this entire stretch in a single pass. The river's reflective surface would amplify the visual impact of the beam, creating a dramatic illuminated zone along the water. Brisbane's compact footprint makes it attractive for a single-beam demonstration — unlike sprawling Sydney or Melbourne, Brisbane's major landmarks all fit inside one beam.
What dark-sky locations near Brisbane are best for watching the mirror pass?
The Blue Mountains (90 minutes west, Bortle 3–4) give the clearest sky with minimal light dome interference. Ku-ring-gai Chase National Park (45 minutes north) is excellent for clear northern passes. Royal National Park (45 minutes south) has a clear southern horizon. For serious observation, Observatory Hill in the CBD works for the bright mirror itself — at magnitude −4 it needs no dark sky — but the Blue Mountains are far better for seeing the beam footprint effect against a dark sky backdrop.
OrbitalNodes.ai tracks the ISS, Tiangong, Hubble, and all satellites over Brisbane in real time — including exact pass times, directions, and brightness predictions.
→ SATELLITES OVER BRISBANE — ORBITALNODES.AI