Stellar HostProfile

TRAPPIST-1

M8.0 V

Records

literature rows

Planets

system count

References

distinct source labels

TIC: TIC 278892590

Approximate color

from effective temperature

Canonical Summary

Adopted host values from all rows

Numeric fields use the median of non-null measurements. Disagreement stays visible through ranges, counts, and provenance.

Temperature

2566 K

2520 to 5780

7 values • 6 distinct

Mass

0.09 Msun

0.08 to 0.09

7 values • 5 distinct

Radius

0.12 Rsun

0.11 to 0.12

7 values • 4 distinct

Age

4.05 Gyr

0.50 to 7.60

2 values • 2 distinct

Luminosity

-3.26 log(Lsun)

-3.28 to -3.26

5 values • 4 distinct

Spectral Type

M8.0 V

Consistent across records

M8.0 V (1)

Planets

Stable across source rows

System Layout

Known planets

7 planets linked to this host

TRAPPIST-1 c

Transit

◌

Discovery

2016

Period

—

Radius

—

Mass

—

Eq. Temp

315 K

TRAPPIST-1 d

Transit

◌

Discovery

2016

Period

4.05 days

Radius

0.79 R⊕

Mass

0.39 M⊕

Eq. Temp

—

TRAPPIST-1 b

Transit

◌

Discovery

2016

Period

1.51 days

Radius

1.09 R⊕

Mass

0.85 M⊕

Eq. Temp

400.1 K

TRAPPIST-1 e

Transit

◌

Discovery

2017

Period

6.10 days

Radius

0.92 R⊕

Mass

0.69 M⊕

Eq. Temp

—

TRAPPIST-1 f

Transit

◌

Discovery

2017

Period

9.21 days

Radius

—

Mass

—

Eq. Temp

—

TRAPPIST-1 h

Transit

◌

Discovery

2017

Period

18.77 days

Radius

0.76 R⊕

Mass

0.33 M⊕

Eq. Temp

—

TRAPPIST-1 g

Transit

◌

Discovery

2017

Period

—

Radius

1.15 R⊕

Mass

1.15 M⊕

Eq. Temp

—

Provenance

Underlying measurements and references

Evidence Summary

Rows

Stellar refs

System refs

Temperaturedisputed

7 values • 6 distinct

Massdisputed

7 values • 5 distinct

Radiusdisputed

7 values • 4 distinct

Agedisputed

2 values • 2 distinct

Luminositydisputed

5 values • 4 distinct

Surface Gravitydisputed

4 values • 2 distinct

Metallicitydisputed

4 values • 3 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
2550	0.08	0.12	0.50	-3.28	—	—	Gillon et al. 2016	TICv8
3352.3	—	—	—	—	—	—	Gaia DR2	TICv8
2566	0.09	0.12	7.60	-3.26	M8.0 V	—	Piaulet-Ghorayeb et al. 2025	TICv8
5780	—	0.11	—	—	—	—	ExoFOP	TICv8
2520	0.09	0.12	—	-3.26	—	—	Ducrot et al. 2020	TICv8
—	0.09	0.11	—	—	—	—	TICv8	TICv8
—	—	—	—	—	—	—	Hirano et al. 2020	TICv8
2559	0.08	0.12	—	-3.28	—	—	Gillon et al. 2017	TICv8
2566	0.09	0.12	—	-3.26	—	—	Agol et al. 2021	TICv8
—	0.09	—	—	—	—	—	Grimm et al. 2018	TICv8