HIP 85605
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules |
| Right ascension | 17h 29m 36.25s[1] |
| Declination | +24° 39′ 14.12″ |
| Apparent magnitude (V) | 11.03[1] |
| Characteristics | |
| Spectral type | K4V M dwarf?[2] |
| B−V color index | 1.1[1][2] |
| Absolute magnitude (MV) | 11.8?[2][a] |
| Details | |
| Luminosity | 0.001?[a] L☉ |
| Temperature | 4700?[3] K |
| Metallicity | poor? |
| Other designations | |
| Database references | |
| SIMBAD | data |
HIP 85605 is a star in the
optical double
. (HIP 85605 is 1,790 ± 30 light years away, and HIP 85607 is 1,323 ± 13 light years away)
The original
mas, which would place it 16.1 light-years from the Solar System.[1] In 2007, van Leeuwen revised the number to 147 mas, or 22.2 light-years.[1] With a parallax of 147 mas (0.147 arcseconds), HIP 85605 is unlikely to be one of the 100 closest star systems to the Sun.[4] In 2014, it was estimated that HIP 85605 could approach to about 0.13 to 0.65 light-years (0.04 to 0.2 pc) from the Sun within 240,000 to 470,000 years, assuming the then-known parallax and distance measurements to the object were correct.[2][5][6] 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
Notes
References
- ^ a b c d e f g h "HIP 85605". Strasbourg astronomical Data Center. Retrieved Jan 3, 2015.
- ^ S2CID 59039482.
- ^ doi:10.6084/m9.figshare.1284334. Retrieved 2015-01-04.)
{{cite journal}}: Cite journal requires|journal=(help - ^ "THE ONE HUNDRED NEAREST STAR SYSTEMS". RECONS (Research Consortium On Nearby Stars). Retrieved 2015-01-12.
- S2CID 40618530.
- ^ Coryn Bailer-Jones (2015-01-01). "The closest encounter is Hip 85605. How reliable is this?". Retrieved 2015-01-05.
External links
- Frequently asked questions to Close encounters of the stellar kind by C.A.L. Bailer-Jones
- HIP 85605 at the SIMBAD Astronomical Database.
- Ids - Bibliography - Image - B&W Image.
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