| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 06h 46m 14.1500s [1] |
| Declination | +79° 33′ 53.3185″ [1] |
| Apparent magnitude (V) | +5.44 [2] |
| Characteristics | |
| Spectral type | F7 V [3] |
| U−B color index | −0.02 [4] |
| B−V color index | +0.53 [4] |
| Astrometry | |
| Radial velocity (Rv) | 15.2±0.2 [5] km/s |
| Proper motion (μ) |
RA: −99.163
mas/
yr
[1] Dec.: −604.042 mas/ yr [1] |
| Parallax (π) | 54.9380 ± 0.0595 mas [1] |
| Distance | 59.37 ± 0.06
ly (18.20 ± 0.02 pc) |
| Absolute magnitude (MV) | +4.18 [2] |
| Details | |
| Mass | 1.13+0.03 −0.02 [6] M☉ |
| Radius | 1.19 [7] R☉ |
| Luminosity | 1.82 [7] L☉ |
| Surface gravity (log g) | 4.40±0.02 [6] cgs |
| Temperature | 6,273±91 [6] K |
| Metallicity [Fe/H] | −0.12±0.06 [6] dex |
| Rotational velocity (v sin i) | 6.63 [8] km/s |
| Age | 1.27+1.65 −0.22 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 46588 (HR 2401; Gliese 240.1) is a star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.44, [2] allowing it to be faintly seen with the naked eye. The object is relatively close at a distance of only 59 light years [1] but is receding with a heliocentric radial velocity of 15 km/s. [5]
HD 46588 is an ordinary F-type main-sequence star with a spectral classification of F7 V. [3] It has 113% the mass of the Sun [6] and 119% its radius. [7] It shines at 182% the luminosity of the Sun [7] from its photosphere at an effective temperature of 6,273 K, [6] giving it a yellow white glow. Isochronic measurements place HD 46588's age at 1.27 billion years, [6] but it's poorly constrained. The star's metallicity is 76% that of the Sun [6] and spins modestly with a projected rotational velocity of 6.63 km/s. [8]
Due to the star's close proximity to
Earth and similarity to the Sun, it has been well studied by astronomers.
[9] No planets have been found, but a brown dwarf companion was discovered in a
WISE survey in 2011. It has a mass of 67.04+8.38
−19.90
Jupiter masses and a temperature of 1360+50
−80 K.
[9] An infrared excess has been discovered around HD 46588, indicating a cold debris disk with a temperature of 60 K.
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| dust disk | 26.34 AU | — | — | |||
References
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c 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 Abt, Helmut A. (23 December 2008). "Mk Classifications of Spectroscopic Binaries". The Astrophysical Journal Supplement Series. 180 (1): 117–118. Bibcode: 2009ApJS..180..117A. doi: 10.1088/0067-0049/180/1/117. eISSN 1538-4365. ISSN 0067-0049.
- ^ a b Cowley, A. P.; Hiltner, W. A.; Witt, A. N. (December 1967). "Spectral classification and photometry of high proper motion stars". The Astronomical Journal. 72: 1334. Bibcode: 1967AJ.....72.1334C. doi: 10.1086/110413. ISSN 0004-6256.
- ^ 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 c d e f g h i Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: A55. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b c d 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. ISSN 0004-6256.
- ^ a b Martínez-Arnáiz, R.; Maldonado, J.; Montes, D.; Eiroa, C.; Montesinos, B. (September 2010). "Chromospheric activity and rotation of FGK stars in the solar vicinity". Astronomy and Astrophysics. 520: A79. arXiv: 1002.4391. Bibcode: 2010A&A...520A..79M. doi: 10.1051/0004-6361/200913725. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Loutrel, N. P.; Luhman, K. L.; Lowrance, P. J.; Bochanski, J. J. (12 September 2011). "DISCOVERY OF A COMPANION AT THE L/T TRANSITION WITH THE<i>WIDE-FIELD INFRARED SURVEY EXPLORER</i>". The Astrophysical Journal. 739 (2): 81. arXiv: 1107.1812. Bibcode: 2011ApJ...739...81L. doi: 10.1088/0004-637X/739/2/81. eISSN 1538-4357. ISSN 0004-637X.
- ^ Gáspár, András; Rieke, George H.; Ballering, Nicholas (29 July 2016). "The Correlation Between Metallicity and Debris Disk Mass". The Astrophysical Journal. 826 (2): 171. arXiv: 1604.07403. Bibcode: 2016ApJ...826..171G. doi: 10.3847/0004-637X/826/2/171. eISSN 1538-4357.
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 06h 46m 14.1500s [1] |
| Declination | +79° 33′ 53.3185″ [1] |
| Apparent magnitude (V) | +5.44 [2] |
| Characteristics | |
| Spectral type | F7 V [3] |
| U−B color index | −0.02 [4] |
| B−V color index | +0.53 [4] |
| Astrometry | |
| Radial velocity (Rv) | 15.2±0.2 [5] km/s |
| Proper motion (μ) |
RA: −99.163
mas/
yr
[1] Dec.: −604.042 mas/ yr [1] |
| Parallax (π) | 54.9380 ± 0.0595 mas [1] |
| Distance | 59.37 ± 0.06
ly (18.20 ± 0.02 pc) |
| Absolute magnitude (MV) | +4.18 [2] |
| Details | |
| Mass | 1.13+0.03 −0.02 [6] M☉ |
| Radius | 1.19 [7] R☉ |
| Luminosity | 1.82 [7] L☉ |
| Surface gravity (log g) | 4.40±0.02 [6] cgs |
| Temperature | 6,273±91 [6] K |
| Metallicity [Fe/H] | −0.12±0.06 [6] dex |
| Rotational velocity (v sin i) | 6.63 [8] km/s |
| Age | 1.27+1.65 −0.22 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 46588 (HR 2401; Gliese 240.1) is a star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.44, [2] allowing it to be faintly seen with the naked eye. The object is relatively close at a distance of only 59 light years [1] but is receding with a heliocentric radial velocity of 15 km/s. [5]
HD 46588 is an ordinary F-type main-sequence star with a spectral classification of F7 V. [3] It has 113% the mass of the Sun [6] and 119% its radius. [7] It shines at 182% the luminosity of the Sun [7] from its photosphere at an effective temperature of 6,273 K, [6] giving it a yellow white glow. Isochronic measurements place HD 46588's age at 1.27 billion years, [6] but it's poorly constrained. The star's metallicity is 76% that of the Sun [6] and spins modestly with a projected rotational velocity of 6.63 km/s. [8]
Due to the star's close proximity to
Earth and similarity to the Sun, it has been well studied by astronomers.
[9] No planets have been found, but a brown dwarf companion was discovered in a
WISE survey in 2011. It has a mass of 67.04+8.38
−19.90
Jupiter masses and a temperature of 1360+50
−80 K.
[9] An infrared excess has been discovered around HD 46588, indicating a cold debris disk with a temperature of 60 K.
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| dust disk | 26.34 AU | — | — | |||
References
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c 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 Abt, Helmut A. (23 December 2008). "Mk Classifications of Spectroscopic Binaries". The Astrophysical Journal Supplement Series. 180 (1): 117–118. Bibcode: 2009ApJS..180..117A. doi: 10.1088/0067-0049/180/1/117. eISSN 1538-4365. ISSN 0067-0049.
- ^ a b Cowley, A. P.; Hiltner, W. A.; Witt, A. N. (December 1967). "Spectral classification and photometry of high proper motion stars". The Astronomical Journal. 72: 1334. Bibcode: 1967AJ.....72.1334C. doi: 10.1086/110413. ISSN 0004-6256.
- ^ 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 c d e f g h i Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: A55. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b c d 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. ISSN 0004-6256.
- ^ a b Martínez-Arnáiz, R.; Maldonado, J.; Montes, D.; Eiroa, C.; Montesinos, B. (September 2010). "Chromospheric activity and rotation of FGK stars in the solar vicinity". Astronomy and Astrophysics. 520: A79. arXiv: 1002.4391. Bibcode: 2010A&A...520A..79M. doi: 10.1051/0004-6361/200913725. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Loutrel, N. P.; Luhman, K. L.; Lowrance, P. J.; Bochanski, J. J. (12 September 2011). "DISCOVERY OF A COMPANION AT THE L/T TRANSITION WITH THE<i>WIDE-FIELD INFRARED SURVEY EXPLORER</i>". The Astrophysical Journal. 739 (2): 81. arXiv: 1107.1812. Bibcode: 2011ApJ...739...81L. doi: 10.1088/0004-637X/739/2/81. eISSN 1538-4357. ISSN 0004-637X.
- ^ Gáspár, András; Rieke, George H.; Ballering, Nicholas (29 July 2016). "The Correlation Between Metallicity and Debris Disk Mass". The Astrophysical Journal. 826 (2): 171. arXiv: 1604.07403. Bibcode: 2016ApJ...826..171G. doi: 10.3847/0004-637X/826/2/171. eISSN 1538-4357.