USAEARENDIL-1 Passes
Over Houston
Predicted pass geometry, viewing conditions, and beam footprint data for Houston when EARENDIL-1 — the first commercial orbital mirror — launches later in 2026. From 29.8°N on the Gulf Coast, EARENDIL-1 can pass directly overhead: an 88° orbit crosses every populated latitude, so the ceiling is the zenith rather than a fixed angle. What differs is how often — at 29.8° N, Houston gets them regularly, though less often than cities nearer the poles. Passes rise in the SW and transit toward the NE. Houston's NASA connection via Johnson Space Center makes it a symbolically important location for orbital mirror viewing.
Predicted geometry for the planned 88° near-polar orbit at 625 km. Eärendil-1 has not launched, so these are modelled figures, not observations — and because the orbit is not sun-synchronous, pass times drift through the year rather than recurring at a fixed hour.
Best: OCT–MAR. Northern winter — long dark nights and the most reliable clear spells.
Seasonal guidance only — based on this location’s latitude and climate, not on Eärendil-1 observations. The mirror has not launched, and because its orbit is not sun-synchronous the pass times themselves drift through the year independently of the weather.
What to Expect in Houston
What EARENDIL-1 Will Look Like from Houston
From Houston, 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 downtown. a near-overhead pass, the mirror passes high overhead on best nights, making it one of the brightest objects in the Houston sky. The NASA connection adds a symbolic resonance — a commercial orbital mirror passing over the city that hosts Mission Control.
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 Houston at Launch
OrbitalNodes.ai will provide real-time pass predictions for Houston 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 — Houston
How bright will EARENDIL-1 appear from Houston?
At peak overhead passes, EARENDIL-1 is designed to reach magnitude −4 — comparable to Venus at maximum brightness. Houston's low latitude (29.8°N) means the mirror reaches nearly the zenith on the best passes, enhancing its apparent brightness compared to higher-latitude northern cities. It is easily visible from downtown, Discovery Green, or the Buffalo Bayou skyline vantage despite Bortle 8 urban light pollution. Between commercial illumination passes, Reflect Orbital tilts the mirror away from Earth, reducing brightness significantly.
How high will EARENDIL-1 appear from Houston?
From 29.8°N on the Texas Gulf Coast, EARENDIL-1 can pass directly overhead: an 88° orbit crosses every populated latitude, so the ceiling is the zenith rather than a fixed angle. What differs is how often — at 29.8° N, Houston gets them regularly, though less often than cities nearer the poles. Passes rise in the SW and transit toward the NE — standard for northern-hemisphere observers of near-polar satellites. Houston's latitude is comparable to Cairo, Delhi, and Dubai, giving it significantly higher peak elevations than Chicago or New York. Higher elevation passes give a longer viewing window and brighter appearance.
When is the best time to see it from Houston?
October through April is peak viewing — Houston's winter months bring frequent clear fronts and mild evening temperatures. Summer (May–September) is hot, humid, and prone to severe afternoon thunderstorms that often persist into evening. Fall offers the best combination of comfortable temperatures and settled weather. Brazos Bend State Park hosts the George Observatory within a 30-mile drive for serious dark-sky viewing.
Will the beam footprint hit Houston?
A 5km beam footprint could span from Discovery Green to the Houston Heights and onto Memorial Park in a single pass — covering the city's major park corridor. A pass targeting Johnson Space Center would illuminate NASA's historic campus — a striking visual given Houston's central role in spaceflight history. Alternatively, a beam over Galveston Bay could create dramatic illumination on the water, while a Buffalo Bayou pass could illuminate downtown's tight waterway corridor. Whether any specific location falls in the footprint depends on Reflect Orbital's commercial contracts and targeting decisions. The beam is steerable and 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 launch later in 2026. 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 Houston than from other cities?
From the Northern Hemisphere at 29.8°N, EARENDIL-1 rises in the SW and transits NE — the standard direction for northern observers of near-polar satellites. Southern Hemisphere observers in Sydney, São Paulo, or Cape Town see the mirror image of this pass, with the satellite rising in the NW and transiting NE. This is because near-polar satellites cross close to the poles, tracking the boundary between Earth's day and night sides — the direction of that boundary appears reversed depending on which hemisphere you're observing from.
What makes Houston's location significant for EARENDIL-1 viewing?
Houston hosts NASA's Johnson Space Center (JSC) in Clear Lake, 25 miles southeast of downtown — Mission Control for every crewed US spaceflight since Gemini in 1965, including Apollo moon missions and current ISS operations. A commercial orbital mirror pass over JSC would carry significant symbolic weight, linking the era of government spaceflight with the emerging commercial space industry. Beyond the NASA connection, Houston's low latitude (29.8°N) gives it higher peak elevation than most major US cities — comparable overhead pass geometry to Dubai or Delhi. The flat Gulf Coast terrain provides unobstructed horizons, and nearby Galveston Bay offers a dramatic reflective backdrop for coastal passes.
What dark-sky locations near Houston 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 Houston in real time — including exact pass times, directions, and brightness predictions.
→ SATELLITES OVER HOUSTON — ORBITALNODES.AI