The iot Dra System

2 planets Draco

iot Dra is a planetary system in the constellation Draco hosting 2 confirmed exoplanets, about 102 light-years from Earth.

iot Dra: Star and Habitable Zone

iot Dra

Spectral type: K2 III
Surface temperature: 4,504 K (Sun: 5,772 K)
Mass: 1.54 M☉
Radius: 11.79 R☉
Luminosity: 52.7801 L☉
Age: 2.7 billion years (Sun: 4.6)

iot Dra b iot Dra c

Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of iot Dra: 5.809–14.349 AU (conservative: 7.358–13.604 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.

See the full interactive habitable-zone view in the Exoplanet Explorer app ›

All 2 Planets in the iot Dra System

Planet	Type	Orbit	Radius	ESI	Discovered
iot Dra b	Cold Gas Giant	511 d	—	0.10	2002
iot Dra c	—	25,000 d	—	0.21	2021

Discovery History

The first planet found here, iot Dra b, was discovered in 2002 using the radial velocity method. The most recent addition, iot Dra c, followed in 2021.

2002 — iot Dra b (Radial Velocity)
2021 — iot Dra c (Radial Velocity)

Frequently Asked Questions About iot Dra

How many planets does iot Dra have?

iot Dra has 2 confirmed exoplanets. More may await discovery.

Are any planets in the iot Dra system habitable?

None of the known planets in iot Dra orbit within the star's habitable zone.

How far away is iot Dra?

iot Dra is about 102 light-years from Earth in the constellation Draco.

Explore the iot Dra system in the app

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