Confirmed Exoplanets & Host Systems Catalog
Confirmed extrasolar planet reference systems spanning radial-velocity pioneers, hot-Jupiter transits, temperate M-dwarf rocky worlds, and JWST atmospheric targets.
Catalog Scope & Cross-Identification Notes
The NASA Exoplanet Archive (operated by NExScI at Caltech/IPAC) curates peer-reviewed orbital and physical parameters for thousands of confirmed planets. FastAstro's exoplanet catalog highlights the six foundational systems that anchor radial-velocity discovery, transit photometry, resonant transit-timing variations, and JWST transmission spectroscopy.
Each entry links planetary mass (true mass vs minimum M sin i), radius, orbital period, semi-major axis, and equilibrium temperature with Gaia DR3 host-star astrometry.
Cross-Referenced Objects in Confirmed Exoplanets & Host Systems Catalog (6)
| Object Profile | Primary Class | Constellation | RA (J2000) | Dec (J2000) | Catalog Aliases | Best Season |
|---|---|---|---|---|---|---|
| Proxima Centauri b (Nearest Exoplanet) | Nearest known exoplanet (radial-velocity habitable-zone terrestrial candidate) | Centaurus | 14h 29m 42.95s | -62° 40′ 46.1″ | Alpha Centauri C b, GJ 551 b | Late Spring to Summer (April–July) |
| TRAPPIST-1 e (Temperate Terrestrial World) | Temperate terrestrial exoplanet in a 7-planet resonant chain | Aquarius | 23h 06m 29.28s | -05° 02′ 28.6″ | 2MASS J23062928-0502285 e | Late Summer to Autumn (August–November) |
| 51 Pegasi b (Dimidium First Hot Jupiter) | Prototype Hot Jupiter exoplanet orbiting a Sun-like G2 IV-V star | Pegasus | 22h 57m 27.98s | +20° 46′ 07.8″ | Dimidium, HD 217014 b, Helvetios b | Autumn (September–December) |
| HD 209458 b (Osiris First Transiting Planet) | First transiting exoplanet & first exoplanet with a detected atmosphere | Pegasus | 22h 03m 10.77s | +18° 53′ 03.5″ | Osiris, V376 Pegasi b, HIP 108859 b | Late Summer to Autumn (August–November) |
| K2-18 b (Temperate Sub-Neptune in Leo) | Temperate sub-Neptune exoplanet with methane- and CO2-rich H2 atmosphere | Leo | 11h 30m 14.52s | +07° 35′ 18.2″ | EPIC 201912552 b, BD+08 2518 b | Spring (March–June) |
| WASP-39 b (JWST Benchmark Saturn Exoplanet) | Low-density inflated Saturn-mass exoplanet (JWST ERS benchmark) | Virgo | 14h 29m 18.42s | -03° 26′ 40.2″ | Bocaprins, GSC 04980-00761 b | Spring to Early Summer (April–July) |
Related Reference Guides
Exoplanet Transit & Radial Velocity Methods
How astronomers detect and characterize exoplanets using photometric transit depth ((Rp/R*)²), Doppler radial velocity (M sin i), and JWST transmission spectra.
Trigonometric Parallax, Parsecs & Gaia DR3
How trigonometric parallax (d_pc = 1 / p_arcsec), the distance modulus equation, Hipparcos, and Gaia DR3 microarcsecond astrometry measure cosmic distances.
Measurement Uncertainty & Optics in Astronomy
How random vs systematic errors, asymmetric error bars, model dependencies, and optical aperture/exit-pupil limits shape astronomical measurements.
Primary Catalog Sources
- NASA Exoplanet Archive (2026-10-01 snapshot): Akeson, R. L., et al. 2013, PASP, 125, 989; NASA Exoplanet Archive (IPAC/Caltech) — NASA Exoplanet Science Institute (NExScI / Caltech / IPAC)
- JWST / MAST Science Archive & Mission Documentation (Cycle 1–4 Public Releases (2022–2026)): Rigby, J., et al. 2023, PASP, 135, 048001 (The Science Performance of JWST as Characterized in Commissioning) — NASA / ESA / CSA / STScI
- ESA Gaia Archive — Data Release 3 (DR3 (2022-06-13)): Gaia Collaboration, Vallenari, A., et al. 2023, A&A, 674, A1 (Gaia Data Release 3) — European Space Agency / Gaia DPAC