HIP 85605 is a star in the
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The origins of the e ...
Hercules with a visual
apparent magnitude of 11.03.
It was thought to be a
M dwarf or
K-type main-sequence star potentially from the Sun
[Optical companion HIP 85607 could be a K0III orange giant ~1200 light-years from the Sun based on a small parallax o]
2.72mas.
/ref> but they are now known to be an optical double. (HIP 85605 is 1,790 ± 30 light years away, and HIP 85607 is 1,323 ± 13 light years away)
The original Hipparcos
''Hipparcos'' was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial obj ...
parallax
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight and is measured by the angle or semi-angle of inclination between those two lines. Due to foreshortening, nearby objects ...
measurement in 1997 was 202 mas
Mas, Más or MAS may refer to:
Film and TV
* Más y Menos, fictional superhero characters, from the Teen Titans animated television series
* Más (Breaking Bad), "Más" (''Breaking Bad''), a season three episode of ''Breaking Bad''
Songs
* Más ( ...
, which would place it 16.1 light-years from the Solar System.[ In that case its gravitational influence could have disrupted the orbits of comets in the Oort cloud and caused some of them to enter the inner Solar System.
With the release of Gaia DR2, it was determined that HIP 85605 is actually a much more distant 1790 ± 30 light-years away, and as such will not be passing remotely close to the Sun at any point in time.
]
See also
* Scholz's Star
* Gliese 710
* List of nearest stars and brown dwarfs
Notes
References
External links
Frequently asked questions to ''Close encounters of the stellar kind''
by C.A.L. Bailer-Jones
*
K-type main-sequence stars
Hercules (constellation)
085605
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