Registry · exoplanet

CI Tau c

Exoplanet

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 04h 33m 52.02s
Declination: +22° 50′ 29.8″
Galactic l, b: 175.46, -16.64
Magnitude V: 13.64
Distance: 158 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	CI Tau · K7
Discovery	Radial Velocity, 2024 · Multiple Observatories
Orbital period	25.2 d
Semi-major axis	0.17 au
Eccentricity	0.58
Radius	13 R⊕ · 1.16 R♃
Mass	1,144.2 M⊕ · 3.6 M♃
Density	2.86 g/cm³
Equilibrium temperature	610.62 K
System distance	158 pc

Recorded parameters

4 quantities with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Mass	1,144.182	M_earth	± 95.35	Radial Velocity	NASA Exoplanet Archive	Manick et al. 2024
Orbital period	25.2	d	± 1.7	Radial Velocity	NASA Exoplanet Archive	Manick et al. 2024
Semi-major axis	0.17	au	± 0.08	Radial Velocity	NASA Exoplanet Archive	Manick et al. 2024
Eccentricity	0.58		± 0.05	Radial Velocity	NASA Exoplanet Archive	Manick et al. 2024

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
CI Tau	Star	0″	—
V* CI Tau	OrionV*	0.2992″	13.8
CI Tau b	Inexistent	0.3786″	—
UGCS J043354.07+225119.1	Low-Mass*	56.9″	—
ZTF J043337.35+224750.5	LongPeriodV*	257.9″	—
ZTF J043411.00+225144.1	TTauri*	272.6″	15.19
2MASS J04334286+2255065	Star	304″	—
2MASS J04341527+2250309	OrionV*	321.4″	23.43
ZTF J043352.55+225626.5	Low-Mass*	356.8″	—
ATO J068.4338+22.9382	Star	364.7″	—
PLCKECC G175.58-16.60	denseCore	423.9″	—

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/ci-tau-c · Registry entry updated 2026-08-14.