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[edit]
- ^ 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.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction