| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 01m 23.12190s [1] |
| Declination | −17° 09′ 24.7302″ [1] |
| Apparent magnitude (V) | 6.27 [2] |
| Characteristics | |
| Spectral type | K2 III [3] |
| B−V color index | 1.763±0.010 [4] |
| Astrometry | |
| Radial velocity (Rv) | −22.0±4.3 [2] km/s |
| Proper motion (μ) |
RA: −0.86
[1]
mas/
yr Dec.: −7.15 [1] mas/ yr |
| Parallax (π) | 1.24 ± 0.44 mas [1] |
| Distance | approx. 2,600
ly (approx. 800 pc) |
| Details | |
| Mass | 10.6±1.9 [5] M☉ |
| Luminosity | 6,816.79 [6] L☉ |
| Temperature | 3,778 [6] K |
| Age | 25.1±3.8 [5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
6 Sagittarii is a massive, orange-hued
star in the southern
zodiac
constellation of
Sagittarius. With an
apparent visual magnitude of 6.27,
[2] it is just below the nominal brightness limit for visibility with the typical naked eye under ideal viewing conditions. The distance can be estimated from the annual
parallax shift of 1.24±0.44
mas
[1] as roughly 2,600
light years away. It is moving closer to the Sun with a heliocentric
radial velocity of −22 km/s.
[2] 6 Sagittarii has a
peculiar velocity of 31.8+9.9
−14.1 km/s, which may indicate it is a
runaway star.
[5]
This is an evolved giant star with a stellar classification of K2 III. [3] It is only 25 [5] million years old and has around ten times the mass of the Sun. [5] The star is radiating about 6,817 times the Sun's luminosity from its photosphere at an effective temperature of 3,778 K. [6] It appears to be a source of extended infrared excess, but this emission may be due to intervening cirrus. [8]
- ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b c d Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv: 1606.08053, Bibcode: 2006AstL...32..759G, doi: 10.1134/S1063773706110065, S2CID 119231169.
- ^ a b Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1988mcts.book.....H.
- ^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b c d e Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv: 1007.4883, Bibcode: 2011MNRAS.410..190T, doi: 10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
- ^ a b c McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–357, arXiv: 1208.2037, Bibcode: 2012MNRAS.427..343M, doi: 10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
- ^ "6 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-03-14.
- ^ Plets, H.; et al. (July 1997), "Giants with infrared excess", Astronomy and Astrophysics, 323: 513–523, Bibcode: 1997A&A...323..513P.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 01m 23.12190s [1] |
| Declination | −17° 09′ 24.7302″ [1] |
| Apparent magnitude (V) | 6.27 [2] |
| Characteristics | |
| Spectral type | K2 III [3] |
| B−V color index | 1.763±0.010 [4] |
| Astrometry | |
| Radial velocity (Rv) | −22.0±4.3 [2] km/s |
| Proper motion (μ) |
RA: −0.86
[1]
mas/
yr Dec.: −7.15 [1] mas/ yr |
| Parallax (π) | 1.24 ± 0.44 mas [1] |
| Distance | approx. 2,600
ly (approx. 800 pc) |
| Details | |
| Mass | 10.6±1.9 [5] M☉ |
| Luminosity | 6,816.79 [6] L☉ |
| Temperature | 3,778 [6] K |
| Age | 25.1±3.8 [5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
6 Sagittarii is a massive, orange-hued
star in the southern
zodiac
constellation of
Sagittarius. With an
apparent visual magnitude of 6.27,
[2] it is just below the nominal brightness limit for visibility with the typical naked eye under ideal viewing conditions. The distance can be estimated from the annual
parallax shift of 1.24±0.44
mas
[1] as roughly 2,600
light years away. It is moving closer to the Sun with a heliocentric
radial velocity of −22 km/s.
[2] 6 Sagittarii has a
peculiar velocity of 31.8+9.9
−14.1 km/s, which may indicate it is a
runaway star.
[5]
This is an evolved giant star with a stellar classification of K2 III. [3] It is only 25 [5] million years old and has around ten times the mass of the Sun. [5] The star is radiating about 6,817 times the Sun's luminosity from its photosphere at an effective temperature of 3,778 K. [6] It appears to be a source of extended infrared excess, but this emission may be due to intervening cirrus. [8]
- ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b c d Gontcharov, G. A. (2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv: 1606.08053, Bibcode: 2006AstL...32..759G, doi: 10.1134/S1063773706110065, S2CID 119231169.
- ^ a b Houk, Nancy; Smith-Moore, M. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode: 1988mcts.book.....H.
- ^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- ^ a b c d e Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv: 1007.4883, Bibcode: 2011MNRAS.410..190T, doi: 10.1111/j.1365-2966.2010.17434.x, S2CID 118629873.
- ^ a b c McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–357, arXiv: 1208.2037, Bibcode: 2012MNRAS.427..343M, doi: 10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
- ^ "6 Sgr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-03-14.
- ^ Plets, H.; et al. (July 1997), "Giants with infrared excess", Astronomy and Astrophysics, 323: 513–523, Bibcode: 1997A&A...323..513P.
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