| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 2h 9m 25.30805s [1] |
| Declination | +81° 17′ 45.3964″ [1] |
| Apparent magnitude (V) | 6.05 [2] |
| Characteristics | |
| Spectral type | A1.5V [3] |
| U−B color index | 0.06 [4] |
| B−V color index | 0.11 [4] |
| Astrometry | |
| Radial velocity (Rv) | −9.0±3.0 [5] km/s |
| Proper motion (μ) |
RA: −34.605
[1]
mas/
yr Dec.: 6.674 [1] mas/ yr |
| Parallax (π) | 14.1120 ± 0.0500 mas [1] |
| Distance | 231.1 ± 0.8
ly (70.9 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.81 [6] |
| Details | |
| Mass | 1.81 [7] M☉ |
| Radius | 1.92 [8] R☉ |
| Luminosity | 16 [6] L☉ |
| Surface gravity (log g) | 4.30 [7] cgs |
| Temperature | 8,528 [7] K |
| Rotational velocity (v sin i) | 130 [9] km/s |
| Age | 254 [7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 12467 is a single [11] star in the northern circumpolar constellation of Cepheus. It has a white hue and is barely visible to the naked eye with an apparent visual magnitude of 6.05. [2] The distance to this object is 231 light years based on parallax, [1] but it is drifting closer with a heliocentric radial velocity of −9 km/s. [5]
This object is an ordinary A-type main-sequence star with a stellar classification of A1.5V, [3] which indicates it is generating energy through core hydrogen fusion. It is 254 [7] million years old with a relatively high projected rotational velocity of 130 km/s. [9] The star has 1.8 [7] times the mass of the Sun and 1.9 [8] times the Sun's radius. It is radiating 16 [6] times the luminosity of the Sun from its photosphere at an effective temperature of 8,528 K. [7]
The star displays an infrared excess with a signature that suggests it has two debris disks. The inner disk is orbiting 7.4 AU from the host star with a mean temperature of 200 K, while the outer disk is 50 K at a separation of 119 AU. [8]
- ^ a b c d e f 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 Oja, T. (1991). "UBV photometry of stars whose positions are accurately known. VI". Astronomy and Astrophysics Supplement Series. 89: 415. Bibcode: 1991A&AS...89..415O.
- ^ a b Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". The Astrophysical Journal Supplement Series. 99: 135. Bibcode: 1995ApJS...99..135A. doi: 10.1086/192182.
- ^ a b Hoffleit, Dorrit; Jaschek, Carlos (1991). The Bright star catalogue. Bibcode: 1991bsc..book.....H.
- ^ a b 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 c 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 f g David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv: 1501.03154. Bibcode: 2015ApJ...804..146D. doi: 10.1088/0004-637X/804/2/146.
- ^ a b c Cotten, Tara H.; Song, Inseok (July 2016), "A Comprehensive Census of Nearby Infrared Excess Stars", The Astrophysical Journal Supplement Series, 225 (1): 24, arXiv: 1606.01134, Bibcode: 2016ApJS..225...15C, doi: 10.3847/0067-0049/225/1/15, S2CID 118438871, 15.
- ^ a b Dworetsky, Michael M. (November 1974). "Rotational Velocities of a0 Stars". Astrophysical Journal Supplement. 28: 101. Bibcode: 1974ApJS...28..101D. doi: 10.1086/190312.
- ^ "HD 12467". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-14.
- ^ De Rosa, R. J.; et al. (2014). "The VAST Survey - III. The multiplicity of A-type stars within 75 pc". Monthly Notices of the Royal Astronomical Society. 437 (2): 1216. arXiv: 1311.7141. Bibcode: 2014MNRAS.437.1216D. doi: 10.1093/mnras/stt1932.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 2h 9m 25.30805s [1] |
| Declination | +81° 17′ 45.3964″ [1] |
| Apparent magnitude (V) | 6.05 [2] |
| Characteristics | |
| Spectral type | A1.5V [3] |
| U−B color index | 0.06 [4] |
| B−V color index | 0.11 [4] |
| Astrometry | |
| Radial velocity (Rv) | −9.0±3.0 [5] km/s |
| Proper motion (μ) |
RA: −34.605
[1]
mas/
yr Dec.: 6.674 [1] mas/ yr |
| Parallax (π) | 14.1120 ± 0.0500 mas [1] |
| Distance | 231.1 ± 0.8
ly (70.9 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.81 [6] |
| Details | |
| Mass | 1.81 [7] M☉ |
| Radius | 1.92 [8] R☉ |
| Luminosity | 16 [6] L☉ |
| Surface gravity (log g) | 4.30 [7] cgs |
| Temperature | 8,528 [7] K |
| Rotational velocity (v sin i) | 130 [9] km/s |
| Age | 254 [7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 12467 is a single [11] star in the northern circumpolar constellation of Cepheus. It has a white hue and is barely visible to the naked eye with an apparent visual magnitude of 6.05. [2] The distance to this object is 231 light years based on parallax, [1] but it is drifting closer with a heliocentric radial velocity of −9 km/s. [5]
This object is an ordinary A-type main-sequence star with a stellar classification of A1.5V, [3] which indicates it is generating energy through core hydrogen fusion. It is 254 [7] million years old with a relatively high projected rotational velocity of 130 km/s. [9] The star has 1.8 [7] times the mass of the Sun and 1.9 [8] times the Sun's radius. It is radiating 16 [6] times the luminosity of the Sun from its photosphere at an effective temperature of 8,528 K. [7]
The star displays an infrared excess with a signature that suggests it has two debris disks. The inner disk is orbiting 7.4 AU from the host star with a mean temperature of 200 K, while the outer disk is 50 K at a separation of 119 AU. [8]
- ^ a b c d e f 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 Oja, T. (1991). "UBV photometry of stars whose positions are accurately known. VI". Astronomy and Astrophysics Supplement Series. 89: 415. Bibcode: 1991A&AS...89..415O.
- ^ a b Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". The Astrophysical Journal Supplement Series. 99: 135. Bibcode: 1995ApJS...99..135A. doi: 10.1086/192182.
- ^ a b Hoffleit, Dorrit; Jaschek, Carlos (1991). The Bright star catalogue. Bibcode: 1991bsc..book.....H.
- ^ a b 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 c 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 f g David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv: 1501.03154. Bibcode: 2015ApJ...804..146D. doi: 10.1088/0004-637X/804/2/146.
- ^ a b c Cotten, Tara H.; Song, Inseok (July 2016), "A Comprehensive Census of Nearby Infrared Excess Stars", The Astrophysical Journal Supplement Series, 225 (1): 24, arXiv: 1606.01134, Bibcode: 2016ApJS..225...15C, doi: 10.3847/0067-0049/225/1/15, S2CID 118438871, 15.
- ^ a b Dworetsky, Michael M. (November 1974). "Rotational Velocities of a0 Stars". Astrophysical Journal Supplement. 28: 101. Bibcode: 1974ApJS...28..101D. doi: 10.1086/190312.
- ^ "HD 12467". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-14.
- ^ De Rosa, R. J.; et al. (2014). "The VAST Survey - III. The multiplicity of A-type stars within 75 pc". Monthly Notices of the Royal Astronomical Society. 437 (2): 1216. arXiv: 1311.7141. Bibcode: 2014MNRAS.437.1216D. doi: 10.1093/mnras/stt1932.