# Kepler-9

> star in the constellation Lyra

**Wikidata**: [Q2298173](https://www.wikidata.org/wiki/Q2298173)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Kepler-9)  
**Source**: https://4ort.xyz/entity/kepler-9


## References

1. SIMBAD
2. Mass-loss rates for transiting exoplanets
3. Extrasolar Planets Encyclopaedia
4. Freebase Data Dumps. 2013
5. Photometric amplitude distribution of stellar rotation of KOIs--Indication for spin-orbit alignment of cool stars and high obliquity for hot stars
6. Stellar rotation periods of the Kepler Objects of Interest: a dearth of close-in planets around fast rotators
7. Rotation and differential rotation of active Kepler stars
8. Rotation periods, variability properties and ages for Kepler exoplanet candidate host stars
9. Inferring probabilistic stellar rotation periods using Gaussian processes
10. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
11. Kepler-9: a system of multiple planets transiting a Sun-like star, confirmed by timing variations
12. The SDSS Photometric Catalog, Release 7
13. The seventh data release of the Sloan Digital Sky Survey
14. Gaia Early Data Release 3
15. Fourth USNO CCD Astrograph Catalog
16. Gaia Data Release 2
17. Gaia Data Release 3
18. The Kepler Follow-up Observation Program. II. Stellar Parameters from Medium- and High-resolution Spectroscopy
19. Spectroscopy of faint Kepler mission exoplanet candidate host stars
20. The California-Kepler Survey. I. High-resolution Spectroscopy of 1305 Stars Hosting Kepler Transiting Planets
21. A Spectroscopic Analysis of the California-Kepler Survey Sample. I. Stellar Parameters, Planetary Radii, and a Slope in the Radius Gap