Exoplanet Archive

Search and filter every confirmed exoplanet in NASA's Exoplanet Archive — refreshed daily from the source. Sort by distance, radius, or mass to explore what's out there.

Host star statistics: how many stars, planets per system →

7 planets found — page 1 of 1.

Planet	Host star	Method	Year	Radius (R⊕)	Mass (M⊕)	Distance (pc)
55 Cnc B b	55 Cnc B	Radial Velocity	2025	—	3.50	12.5
55 Cnc B c	55 Cnc B	Radial Velocity	2025	—	5.30	12.5
55 Cnc f	55 Cnc	Radial Velocity	2007	—	48.50	12.6
55 Cnc c	55 Cnc	Radial Velocity	2004	—	56.60	12.6
55 Cnc e	55 Cnc	Radial Velocity	2004	1.88	7.99	12.6
55 Cnc d	55 Cnc	Radial Velocity	2002	—	1214.10	12.6
55 Cnc b	55 Cnc	Radial Velocity	1996	—	276.00	12.6

ℹ️ About this data

Sourced from NASA's Exoplanet Archive (Caltech/IPAC), refreshed daily. Only confirmed planets are included — candidates awaiting confirmation aren't in this list.
A blank field means that measurement hasn't been published for that planet — not every planet has a known mass, for instance, especially ones found only by the transit method (which measures radius directly, but needs a separate technique like radial velocity to get mass).

📏 Units and symbols legend

Symbol	Means	In metric
R⊕	Earth radii — planet size relative to Earth (Earth = 1)	1 R⊕ ≈ 6,371 km
M⊕	Earth masses — planet mass relative to Earth (Earth = 1)	1 M⊕ ≈ 5.972 × 10²⁴ kg
R☉	Solar radii — host star size relative to the Sun (Sun = 1)	1 R☉ ≈ 696,000 km
M☉	Solar masses — host star mass relative to the Sun (Sun = 1)	1 M☉ ≈ 1.989 × 10³⁰ kg
K	Kelvin — temperature (star surface or planet equilibrium)	°C = K − 273.15 (shown alongside on each planet's page)
pc	Parsecs — distance from Earth	1 pc ≈ 3.086 × 10¹³ km ≈ 3.26 light-years
days	Orbital period — time for one full orbit around the host star, always in Earth days regardless of the planet	Earth's own orbital period is 365.25 days — divide by that to get Earth years
RA / Dec	Right ascension / declination — the star's position on the sky	Both in degrees — the sky's equivalent of longitude/latitude
Eccentricity	How elongated the orbit is	Unitless: 0 = perfect circle, closer to 1 = more elongated ellipse

Astronomy uses Earth/Sun/Jupiter as yardsticks instead of kg or km because the numbers involved (10²⁴–10³⁰) are unwieldy otherwise — for scale, a gas giant like Jupiter is about 11 R⊕ and 318 M⊕.

💻 Show API usage example (cURL)

curl -sS "https://devops.majbase.com/exoplanets/api?q=kepler&method=Transit&sort=distance&page=1"

Returns {"rows": [...], "total", "page", "pages"}, or {"error": "..."} if temporarily unavailable. All query params are optional.