Stellar Characteristics
| Title | Planet | Star | Data | Notes |
|---|---|---|---|---|
| Highest metallicity | HD 126614 Ab | HD 126614 A | +0.56 dex | |
| Lowest metallicity | HIP 13044 b | HIP 13044 | −2.09±0.26 dex | This star came from another galaxy that merged into the Milky Way 6–9 billion years ago. The distinction of having the lowest metallicity of a planet-hosting star is shared with HIP 11952. |
| Highest stellar mass | HD 13189 b | HD 13189 | 4.5±2.5 M☉ | Margin of error means it is possible this it not the most massive known planet-harboring star. Epsilon Tauri has a stellar mass of 2.723 M☉ |
| Lowest stellar mass | 2M J044144 b | 2M J044144 | 0.02 M☉ | |
| Oldest star | HD 164922 b | HD 164922 | 13.4 billion years☉ | |
| Hottest star with a planet | NY Virginis b | NY Virginis A | 33247°K | This star is a subdwarf B star and has a red dwarf companion of 0.14 solar masses with a semi-major axis of slightly under 4 million kilometers from the primary component. |
| Hottest main-sequence star with a planet | Beta Pictoris b | Beta Pictoris | 8052°K |
Read more about this topic: List Of Extrasolar Planet Extremes