Home     Getting Started     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astro Photo     The Collection     Forum     Blog New!     FAQ     Press     Login  

HD 10069


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

An orbital period of 0.94days for the hot-Jupiter planet WASP-18b
The `hot Jupiters' that abound in lists of known extrasolar planets arethought to have formed far from their host stars, but migrate inwardsthrough interactions with the proto-planetary disk from which they wereborn, or by an alternative mechanism such as planet-planet scattering.The hot Jupiters closest to their parent stars, at orbital distances ofonly ~0.02 astronomical units, have strong tidal interactions, andsystems such as OGLE-TR-56 have been suggested as tests of tidaldissipation theory. Here we report the discovery of planet WASP-18b withan orbital period of 0.94days and a mass of ten Jupiter masses(10MJup), resulting in a tidal interaction an order ofmagnitude stronger than that of planet OGLE-TR-56b. Under the assumptionthat the tidal-dissipation parameter Q of the host star is of the orderof 106, as measured for Solar System bodies and binary starsand as often applied to extrasolar planets, WASP-18b will be spirallinginwards on a timescale less than a thousandth that of the lifetime ofits host star. Therefore either WASP-18 is in a rare, exceptionallyshort-lived state, or the tidal dissipation in this system (and possiblyother hot-Jupiter systems) must be much weaker than in the Solar System.

Standard magnitudes in the E regions.
Not Available

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:Phénix
Right ascension:01h37m25.03s
Declination:-45°40'40.4"
Apparent magnitude:9.312
Proper motion RA:27.8
Proper motion Dec:18.9
B-T magnitude:9.854
V-T magnitude:9.357

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 10069
TYCHO-2 2000TYC 8040-72-1
USNO-A2.0USNO-A2 0375-00502183
HIPHIP 7562

→ Request more catalogs and designations from VizieR