HD 173047

Last updated
HD 173047
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 18h 45m 55.99514s [1]
Declination −50° 52′ 21.7342″ [1]
Apparent magnitude  (V)6.24±0.01 [2]
Characteristics
Spectral type B8/9 II [3]
B−V color index −0.080±0.006 [4]
Astrometry
Radial velocity (Rv)−10.7±0.4 [1]  km/s
Proper motion (μ)RA: +3.697  mas/yr [1]
Dec.: −15.975  mas/yr [1]
Parallax (π)3.1031 ± 0.0499  mas [1]
Distance 1,050 ± 20  ly
(322 ± 5  pc)
Absolute magnitude  (MV)−1.52 [4]
Details
Mass 4.00±0.11 [5]   M☉
Radius 5.54+0.15
−0.14 [1]   R☉
Luminosity (bolometric)692 [5]   L☉
Surface gravity (log g)3.43 [6]   cgs
Temperature 11,843±156 [7]   K
Metallicity [Fe/H]+0.10 [6]   dex
Age 194 [8]   Myr
Other designations
28 G. Telescopii [9] , CD−50°12122, CPD−50°10815, GC  25645, HD  173047, HIP  92072, SAO  245693 [10]
Database references
SIMBAD data

HD 173047 is a solitary, bluish-white hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.24, [2] placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively far at a distance of 1,050 light-years based on Gaia DR3 parallax measurements, but it is drifting closer with a heliocentric radial velocity of −10.7  km/s . [1] At its current distance, HHD 173047's brightness is heavily diminished by 0.44 magnitudes due to interstellar extinction [8] and it has an absolute magnitude of −1.52 [4]

HD 173047 has a stellar classification of B8/9 II, [3] indicating that it is an evolved B-type star with the characteristics of a B8 and B9 bright giant. It has 4 times the mass of the Sun [5] and a slightly enlarged radius 5.54 times that of the Sun's. [1] It radiates a bolometric luminosity 692 times that of the Sun's [5] from its photosphere at an effective temperature of 11,843  K [7] HD 173047 is metal enriched with an iron abundance 126% that of the Sun's ([Fe/H] = +0.10) [6] and it is estimated to be 194 million years old. [8]

Related Research Articles

<span class="mw-page-title-main">Lambda Telescopii</span> Star in the constellation Telescopus

λ Telescopii, Latinized as Lambda Telescopii, is a solitary, bluish-white hued star located in the southern constellation of Telescopium. It has an apparent magnitude of 4.84, making it readily visible to the naked eye under ideal conditions. Gaia DR3 parallax measurements imply a distance of 490 light years, and it is currently approaching the Solar System with a somewhat constrained heliocentric radial velocity of −2 km/s. At its current distance, the visual magnitude of Lambda Telescopii is diminished by an extinction of 0.25 due to interstellar dust and it has an absolute magnitude of −1.51.

<span class="mw-page-title-main">RV Caeli</span> Star in the constellation Caelum

RV Caeli, also known as HD 28552, is a solitary, red hued variable star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 6.4, placing it near the limit for naked eye visibility. The object is located relatively far at a distance of 1,340 light years based on parallax measurements from Gaia DR3, but is rapidly receding with a heliocentric radial velocity of 98 km/s.

HD 164712, also known as HR 6731 is an orange hued star located in the southern constellation of Apus. It has an apparent magnitude of 5.86, making it faintly visible to the naked eye if viewed under ideal conditons. Parallax measurements place the object at a distance of 229 light-years (70 pc), and it is currently receding with a heliocentric radial velocity of 14.8 km/s.

<span class="mw-page-title-main">HD 24479</span> Star in the constellation Camelopardalis

HD 24479, also designated as HR 1204, is a solitary, bluish-white hued star located in the northern circumpolar constellation Camelopardalis. The star is visible to the naked eye with an apparent visual magnitude of 5.04. Based on Gaia DR3 parallax measurements, it is located 385 light years from the Sun. However, it is receding with a somewhat constrained heliocentric radial velocity of 4.6 km/s. At its current distance, HD 24479's brightness is diminished by 0.29 magnitudes due to interstellar dust.

HD 121439, also known as HR 5240, is a solitary, bluish-white hued star located in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.08, allowing it to be faintly visible to the naked eye. The object is located relatively far at a distance of 774 light years based on Gaia DR3 parallax measurements but is receding with a fairly constrained radial velocity of 4 km/s. At its current distance, HD 121439's brightness is diminished by 0.57 magnitudes due to interstellar dust.

<span class="mw-page-title-main">HD 154972</span> Star in the constellation of Apus

HD 154972, also known as HR 6373 or rarely 56 G. Apodis, is a solitary, bluish-white-hued star located in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.23, placing it near the limit for naked eye visibility. Gaia DR3 parallax measurements place the object 336 light years away, and it is currently drifting closer with a heliocentric radial velocity of −3.1 km/s. At its current distance, HD 154972's brightness is diminished by 0.23 magnitudes due to extinction from interstellar dust. It has an absolute magnitude of +1.11.

HD 39901 is an orange hued star located in the constellation Columba. It is also called HR 2069, which is the star's Bright Star Catalog designation. Eggen (1989) lists it as a member of the old disk population.

HD 75116, also known as HR 3491, is a solitary, orange hued star in the southern circumpolar constellation Volans, the flying fish. It has an apparent magnitude of 6.31, placing it near the limit for naked eye visibility. Parallax measurements from the Gaia spacecraft place the star relatively far at a distance of 930 light years. It appears to be approaching the Solar System, having a heliocentric radial velocity of −17.5 km/s.

HD 47475 is a solitary star located in the southern constellation Columba. With an apparent magnitude of 6.34, its barely visible to the naked eye under ideal conditions. The star is located 1,720 light years away from the Solar System, but is drifting away with a heliocentric radial velocity of 15.77 km/s.

<span class="mw-page-title-main">HD 171819</span> Star in the constellation Telescopium

HD 171819, also known as HR 6986 or rarely 22 G. Telescopii, is a solitary star located in the southern constellation Telescopium. It is faintly visible to the naked eye as a white-hued object with an apparent magnitude of 5.84. The object is located relatively close at a distance of 313 light years based on Gaia DR3 parallax measurements, but it is approaching the Solar System with a heliocentric radial velocity of −9 km/s. At its current distance, HD 171819's brightness is diminished by one-quarter of a magnitude due to interstellar dust and it has an absolute magnitude of +0.65.

<span class="mw-page-title-main">HD 76236</span> Star in the constellation Chamaeleon

HD 76236, also designated as HR 3543 or rarely 11 G. Chamaeleontis, is a solitary star located in the southern circumpolar constellation Chamaeleon. It is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.77. Based on parallax measurements from the Gaia satellite, the object is estimated to be 612 light years away. Currently, it is receding with a heliocentric radial velocity of 7 km/s. At its current distance, HD 76236's brightness is diminished by 0.39 magnitudes due to interstellar dust. It has an absolute magnitude of −0.13.

HD 191220, also known as HR 7698, is a solitary white hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 6.14, placing it near the limit for naked eye visibility. The object is located relatively close at a distance of 245 light years based on Gaia DR3 parallax measurements but is slowly receding with a heliocentric radial velocity of 0.1 km/s. At its current distance, HD 191220's brightness is diminished by 0.22 magnitudes due to interstellar dust.

<span class="mw-page-title-main">HD 201772</span> Star in the constellation Microscopium

HD 201772, also known as HR 8104, is a yellowish-white hued star located in the southern constellation Microscopium. It has an apparent magnitude of 5.26, making it one of the brighter members of this generally faint constellation. The object is located relatively close at a distance of 111 light-years based on Gaia DR3 parallax measurements but is approaching closer with a heliocentric radial velocity of −41 km/s. At its current distance, HD 201772's brightness is diminished by 0.11 magnitudes due to interstellar dust.

<span class="mw-page-title-main">HD 198716</span> Star in the constellation of Microscopium

HD 198716, also known as HR 7987 or 33 G. Microscopii, is a solitary star located in the southern constellation Microscopium. Eggen (1993) lists it as a member of the Milky Way's old disk population.

<span class="mw-page-title-main">HD 118285</span> SPB star in the constellation Chamaeleon.

HD 118285, also known as HR 5115, is a variable star located in the southern circumpolar constellation Chamaeleon. DY Chamaeleontis is its variable star designation. It has an average apparent magnitude of 6.32, placing it near the limit for naked eye visibility. The object is located relatively far at a distance of 864 light years based on Gaia DR3 parallax measurements but is receding with a heliocentric radial velocity of 18 km/s. At its current distance, HD 118285's brightness is diminished by 0.58 magnitudes due to interstellar dust.

<span class="mw-page-title-main">HD 168592</span> Star in the constellation of Corona Australis

HD 168592, also designated as HR 6862 or rarely 7 G. Coronae Australis, is a solitary star located in the southern constellation Corona Australis. It is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.07. Gaia DR3 parallax measurements place it at a distance of 490 light years and is currently receding with a heliocentric radial velocity of 18 km/s. At its current distance, HD 168592's brightness is diminished by 0.38 magnitudes due to interstellar dust. It has an absolute magnitude of −0.76.

<span class="mw-page-title-main">HD 174500</span> Star in the constellation of Telescopium

HD 174500, also designated as HR 7097 or rarely 34 G. Telescopii, is a solitary white-hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.16, placing it near the limit for naked eye visibility. Gaia DR3 parallax measurements place the object 692 light years away, and it is currently receding with a heliocentric radial velocity of 35 km/s. At its current distance, HD 174500's brightness is diminished by 0.39 magnitudes due to interstellar dust. It has an absolute magnitude of −0.82.

<span class="mw-page-title-main">HD 172991</span> Hot/cold binary; Corona Australis

HD 172991, also known as HR 7031 or rarely 20 G. Coronae Australis, is a binary star located in the southern constellation Corona Australis. It has a combined apparent magnitude of 5.44, making it faintly visible to the naked eye. The system is located relatively far at a distance of 1,220 light years based on Gaia DR3 parallax measurements but is receding with a heliocentric radial velocity of −17.4 km/s. At its current distance HD 172991's brightness is diminished by magnitudes due to interstellar dust and it has an absolute magnitude of −2.56.

<span class="mw-page-title-main">HD 177406</span> Star in the constellation of Telescopium

HD 177406, also known as HR 7223 or rarely 47 G. Telescopii, is a solitary star located in the southern constellation Telescopium. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.95. Gaia DR3 parallax measurements imply a distance of 369 light years and it is currently approaching the Solar System with a heliocentric radial velocity of −6.2 km/s. At its current distance, HD 177406's brightness is diminished by 0.23 magnitudes due to interstellar dust and it has an absolute magnitude of +0.60.

<span class="mw-page-title-main">HD 176425</span> A-type dwarf; Corona Australis

HD 176425, also known as HR 7177 or rarely 38 G. Coronae Australis, is a solitary, bluish-white hued star located in the southern constellation Corona Australis. It has an apparent magnitude of 6.21, placing it near the limit for naked eye visibility, even under ideal conditions. Gaia DR3 parallax measurements imply a distance of 358 light-years, and it is currently drifting closer with a heliocentric radial velocity of −12.8 km/s. At its current distance, HD 176425's brightness is diminished by an interstellar extinction factor of 0.27 magnitudes and it has an absolute magnitude of +0.75.

References

  1. 1 2 3 4 5 6 7 8 9 Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics . arXiv: 2208.00211 . doi: 10.1051/0004-6361/202243940 . Gaia DR3 record for this source at VizieR.
  2. 1 2 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.
  3. 1 2 Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars: Declinations −53° to −40°. Vol. 2. Bibcode:1978mcts.book.....H.
  4. 1 2 3 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.
  5. 1 2 3 4 Hohle, M.M.; Neuhäuser, R.; Schutz, B.F. (April 2010). "Masses and luminosities of O- and B-type stars and red supergiants". Astronomische Nachrichten. 331 (4): 349–360. arXiv: 1003.2335 . Bibcode:2010AN....331..349H. doi:10.1002/asna.200911355. eISSN   1521-3994. ISSN   0004-6337. S2CID   111387483.
  6. 1 2 3 Anders, F.; et al. (February 2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy & Astrophysics. 658: A91. arXiv: 2111.01860 . Bibcode:2022A&A...658A..91A. doi: 10.1051/0004-6361/202142369 . eISSN   1432-0746. ISSN   0004-6361.
  7. 1 2 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.
  8. 1 2 3 Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars". Astronomy Letters. 38 (11): 694–706. arXiv: 1606.09028 . Bibcode:2012AstL...38..694G. doi:10.1134/S1063773712110035. eISSN   1562-6873. ISSN   1063-7737. S2CID   255202762.
  9. ↑ 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.
  10. ↑ "HD 173047". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved August 1, 2023.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.