  | |
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Apus |
| Right ascension | 18h 05m 26.85525s [1] |
| Declination | −81° 29′ 11.6368″ [1] |
| Apparent magnitude (V) | 6.35±0.01 [2] |
| Characteristics | |
| Spectral type | K3/4 III [3] |
| U−B color index | +1.75 [4] |
| B−V color index | +1.50 [4] |
| Astrometry | |
| Radial velocity (Rv) | −3.3±0.4 [5] km/s |
| Proper motion (μ) |
RA: +28.344
mas/
yr
[1] Dec.: −48.347 mas/ yr [1] |
| Parallax (π) | 3.2987 ± 0.0286 mas [1] |
| Distance | 989 ± 9
ly (303 ± 3 pc) |
| Absolute magnitude (MV) | −0.61 [6] |
| Details | |
| Radius | 42.0+4.2 −4.1 [7] or 67.8±1.6 [1] R☉ |
| Luminosity | 495±13
[7] or 1,055+28 −27 [1] L☉ |
| Surface gravity (log g) | 0.71±0.01 [8] cgs |
| Temperature | 4,186±122 [9] K |
| Metallicity [Fe/H] | −0.66 [8] dex |
| Rotational velocity (v sin i) | <1.0 [10] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 162337, also known as HR 6646 or rarely 65 G. Apodis, is a solitary orange-hued star located in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.35, [2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively far at a distance of 989 light-years based on Gaia DR3 parallax measurements, [1] but it is drifting closer with a heliocentric radial velocity of −3.3 km/s. [5] At its current distance, HD 162337's brightness is heavily diminished by 0.45 magnitudes due to interstellar extinction [13] and it has an absolute magnitude of −0.61. [6]
HD 162337 has a
stellar classification of K3/4 III,
[3] indicating that it is an
evolved star with the characteristics of a K3 and K4
giant star. It has expanded to 42 times the
radius of the Sun
[7] and now radiates 495 times the
luminosity of the Sun
[7] from its enlarged
photosphere at an
effective temperature of 4,186
K.
[9] However, Gaia DR3
stellar evolution models give a larger
radius of 67.8±1.6
R☉
[1] and a higher
luminosity of 1,055+28
−27
L☉.
[1] HD 162337 is metal deficient with an
iron abundance 21.9% that of the
Sun's ([Fe/H] = −0.66)
[8] and it spins too slowly for its
projected rotational velocity to measured accurately.
[10]
References
- ^ a b c d e f g h i Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
- ^ a b Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars: Declinations −90° to −53°. Vol. 1. Bibcode: 1975mcts.book.....H.
- ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode: 1966CoLPL...4...99J.
- ^ a b Gontcharov, G. A. (November 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. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
- ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c Poggio, E.; Recio-Blanco, A.; Palicio, P. A.; Re Fiorentin, P.; de Laverny, P.; Drimmel, R.; Kordopatis, G.; Lattanzi, M. G.; Schultheis, M.; Spagna, A.; Spitoni, E. (30 September 2022). "The chemical signature of the Galactic spiral arms revealed by Gaia DR3". Astronomy & Astrophysics. 666: L4. arXiv: 2206.14849. Bibcode: 2022A&A...666L...4P. doi: 10.1051/0004-6361/202244361. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694. Bibcode: 2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl: 1721.1/124721. S2CID 166227927.
- ^ a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars V: Southern stars *". Astronomy & Astrophysics. 561: A126. arXiv: 1312.3474. Bibcode: 2014A&A...561A.126D. doi: 10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361. S2CID 54046583.
- ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode: 1879RNAO....1.....G.
- ^ "HD 128294". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 20, 2015.
- ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv: 1709.01160. Bibcode: 2017MNRAS.472.3805G. doi: 10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.
| |
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Apus |
| Right ascension | 18h 05m 26.85525s [1] |
| Declination | −81° 29′ 11.6368″ [1] |
| Apparent magnitude (V) | 6.35±0.01 [2] |
| Characteristics | |
| Spectral type | K3/4 III [3] |
| U−B color index | +1.75 [4] |
| B−V color index | +1.50 [4] |
| Astrometry | |
| Radial velocity (Rv) | −3.3±0.4 [5] km/s |
| Proper motion (μ) |
RA: +28.344
mas/
yr
[1] Dec.: −48.347 mas/ yr [1] |
| Parallax (π) | 3.2987 ± 0.0286 mas [1] |
| Distance | 989 ± 9
ly (303 ± 3 pc) |
| Absolute magnitude (MV) | −0.61 [6] |
| Details | |
| Radius | 42.0+4.2 −4.1 [7] or 67.8±1.6 [1] R☉ |
| Luminosity | 495±13
[7] or 1,055+28 −27 [1] L☉ |
| Surface gravity (log g) | 0.71±0.01 [8] cgs |
| Temperature | 4,186±122 [9] K |
| Metallicity [Fe/H] | −0.66 [8] dex |
| Rotational velocity (v sin i) | <1.0 [10] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 162337, also known as HR 6646 or rarely 65 G. Apodis, is a solitary orange-hued star located in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.35, [2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively far at a distance of 989 light-years based on Gaia DR3 parallax measurements, [1] but it is drifting closer with a heliocentric radial velocity of −3.3 km/s. [5] At its current distance, HD 162337's brightness is heavily diminished by 0.45 magnitudes due to interstellar extinction [13] and it has an absolute magnitude of −0.61. [6]
HD 162337 has a
stellar classification of K3/4 III,
[3] indicating that it is an
evolved star with the characteristics of a K3 and K4
giant star. It has expanded to 42 times the
radius of the Sun
[7] and now radiates 495 times the
luminosity of the Sun
[7] from its enlarged
photosphere at an
effective temperature of 4,186
K.
[9] However, Gaia DR3
stellar evolution models give a larger
radius of 67.8±1.6
R☉
[1] and a higher
luminosity of 1,055+28
−27
L☉.
[1] HD 162337 is metal deficient with an
iron abundance 21.9% that of the
Sun's ([Fe/H] = −0.66)
[8] and it spins too slowly for its
projected rotational velocity to measured accurately.
[10]
References
- ^ a b c d e f g h i Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
- ^ a b Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars: Declinations −90° to −53°. Vol. 1. Bibcode: 1975mcts.book.....H.
- ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode: 1966CoLPL...4...99J.
- ^ a b Gontcharov, G. A. (November 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. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
- ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ a b c Poggio, E.; Recio-Blanco, A.; Palicio, P. A.; Re Fiorentin, P.; de Laverny, P.; Drimmel, R.; Kordopatis, G.; Lattanzi, M. G.; Schultheis, M.; Spagna, A.; Spitoni, E. (30 September 2022). "The chemical signature of the Galactic spiral arms revealed by Gaia DR3". Astronomy & Astrophysics. 666: L4. arXiv: 2206.14849. Bibcode: 2022A&A...666L...4P. doi: 10.1051/0004-6361/202244361. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694. Bibcode: 2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl: 1721.1/124721. S2CID 166227927.
- ^ a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars V: Southern stars *". Astronomy & Astrophysics. 561: A126. arXiv: 1312.3474. Bibcode: 2014A&A...561A.126D. doi: 10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361. S2CID 54046583.
- ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode: 1879RNAO....1.....G.
- ^ "HD 128294". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved September 20, 2015.
- ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv: 1709.01160. Bibcode: 2017MNRAS.472.3805G. doi: 10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.