---
title: "The Kepler-407 system"
url: "https://spacecatalog.org/system/kepler-407"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Cite Christiansen et al. (2025), Planetary Science Journal (doi:10.3847/PSJ/ade3c2), and the literature reference given with each value."
---

# The Kepler-407 system

Kepler-407 is a G yellow star in Draco, 1104 ly away, with 2 known planets. Their orbits run from 0.0153 to 3.27 AU. All but one were detected by transit.

## The planets, innermost first

| Planet | Orbit (AU) | Period | Radius | Mass | Equilibrium T |
| --- | --- | --- | --- | --- | --- |
| [b](https://spacecatalog.org/object/kepler-407-b) | 0.0153 | 0.6693 d | 1.19 R⊕ | 1.93 M⊕ | 1983 K |
| [c](https://spacecatalog.org/object/kepler-407-c) | 3.27 | 8.214 yr | 12.30 R⊕ | 4000 M⊕ | 147 K |

Every figure is the planet's composite parameter from the [NASA Exoplanet Archive (Planetary Systems Composite Parameters)](https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars), one consistent set per world. Semi-major axes are orbits about the star, not distances from Earth.

This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Cite Christiansen et al. (2025), Planetary Science Journal (doi:10.3847/PSJ/ade3c2), and the literature reference given with each value.

## The host star

| Quantity | Value |
| --- | --- |
| CLASS | G yellow star |
| SPECTRAL TYPE | G |
| MASS | 0.99 M☉ |
| RADIUS | 1.04 R☉ |
| SURFACE TEMPERATURE | 5487 K |
| LUMINOSITY | 0.883 L☉ |
| DISTANCE FROM EARTH | 1104 ly |
| APPARENT MAGNITUDE | 12.60 |
| CONSTELLATION | Draco |
| STARS IN SYSTEM | 1 |

The star itself: https://spacecatalog.org/object/kepler-407

The page itself, with the orbits drawn: https://spacecatalog.org/system/kepler-407