Astronomy Calculator Suite
Explore the sky with free astronomy tools
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Astronomy Calculator Suite combines eight free tools for astronomical calculations and observations. Find Sun and Moon times, moon phases, planetary positions, and angular separation. Calculate telescope field of view, light-travel time, stellar magnitude, and orbital periods, or convert calendar dates to Julian dates. It supports multiple units, works in your browser, and requires no signup.
PH · launched Sep 15, 2026 · 2 upvotes (top 26%) · 0 views
Niche: specialized calculation tools · 551 launches, 66 in the last 7 days ▼ -7% · Explore this niche →
Category and tags
- Education
- Analytics & BI
- B2C
- Not AI
- Hobby / open-source project
- Education
- Space
- Science
Visit website ↗ Source listing ↗
More like this: all 551 launches in specialized calculation tools →
Could you build this?
Yes Astronomical calculations (Keplerian orbits, Moon phases, FOV, light-travel time) rely on well-documented public mathematical formulas and standard open-source ephemeris libraries like astronomy-engine.
Competitors
Other products that read as similar to this one : 581 launches clear the similarity bar, closest 8 shown.
Attention rank: #81 of 582 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 315 days after the earliest competitor.
- Moon Sign Calculator · ph · 2026-10-23 · 1 upvotes · similarity 0.56
- Astrolia · ph · 2026-09-25 · 1 upvotes · similarity 0.56
- Track the Moon · ph · 2026-09-11 · 1 upvotes · similarity 0.56
- Horoscope.me · ph · 2026-10-24 · 1 upvotes · similarity 0.52
- StarScope · hn · 2026-06-15 · 22 upvotes · similarity 0.50
- cosmic-opus · github · 2026-09-28 · 8 upvotes · similarity 0.49
- Calc Tools Base · ph · 2026-09-20 · 1 upvotes · similarity 0.49
- An open source astronomy dashboard (https://caelus.siderealcode.net) · hn · 2025-11-10 · 5 upvotes · similarity 0.49
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.