A Planetary System?
Back in 1999 the presence of a planetary companion was inferred around Gamma2 Delphini, an evolved orange subgiant star. Such a planet would yield a minimum mass of 0.7 Jupiter masses, orbital period of 1.44 years and separation of nearly 1.5 astronomical units (almost the orbital separation of Mars from the Sun).
So far the planetary candidate has not been confirmed. McDonald Observatory researches have set mass limits for potential planetary companions in orbit around the star Gamma2 Delphini.
| Companion |
Mass | Semimajor axis |
Orbital period |
Eccentricity | Radius |
|---|---|---|---|---|---|
| b | ≥0.7 MJ | 1.5 | 525.6 | ? | — |
Read more about this topic: Gamma Delphini
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