HD 36584

Last updated
HD 36584
Dorado constellation map.svg
Red circle.svg
Location of HD 36584 on the map (circled)
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Dorado
A
Right ascension 05h 26m 59.80322s [1]
Declination −68° 37′ 21.1327″ [1]
Apparent magnitude  (V)6.62±0.01 [2]
B
Right ascension 05h 26m 59.87970s [3]
Declination −68° 37′  22.4439″ [3]
Apparent magnitude  (V)6.91±0.01 [2]
Characteristics
Spectral type F0 IV/V [4]
A
B−V color index +0.37 [5]
B
B−V color index +0.40 [5]
Astrometry
Radial velocity (Rv)−4.60±3.4 [6]  km/s
Absolute magnitude  (MV)+1.57 [7]
A
Proper motion (μ)RA: −10.638  mas/yr [1]
Dec.: −17.846  mas/yr [1]
Parallax (π)12.4037 ± 0.0261  mas [1]
Distance 263.0 ± 0.6  ly
(80.6 ± 0.2  pc)
B
Proper motion (μ)RA: −4.710  mas/yr [3]
Dec.: −19.675  mas/yr [3]
Parallax (π)12.4171 ± 0.0384  mas [3]
Distance 262.7 ± 0.8  ly
(80.5 ± 0.2  pc)
Orbit [8]
Period (P)795 yr
Semi-major axis (a)1.704″
Eccentricity (e)0.887
Inclination (i)129.5°
Longitude of the node (Ω)74.8°
Periastron epoch (T)2,403,927.97472  JD
Argument of periastron (ω)
(secondary)		112.8°
Details
A
Mass 1.69 [9]   M☉
B
Mass 1.57 [9]   M☉
Other designations
24 G. Doradus [10] , CD−68°308, CPD−68°375, GC  6795, HD  36584, HIP  25482, HR  1859, SAO  249281, CCDM J05270-6837AB, WDS J05270-6837AB [11]
Database references
SIMBAD the system
A
B

HD 36584 (HR 1859; 24 G. Doradus) is a visual binary located in the southern constellation Dorado. The primary has an apparent magnitude of 6.62 and the secondary has an apparent magnitude of 6.91, [2] making both stars visible in a telescope but not to the naked eye. The system is located relatively close at a distance of 263 light-years based on Gaia DR3 parallax measurements [1] [3] and it is drifting closer with a heliocentric radial velocity of −4.6  km/s . [6] The system has a combined absolute magnitude of 1.57. [7]

HD 36584 was first discovered to be a double star in 1898 by astronomer R.T.A Innes. At the time of discovery, the components had a separation of only half an arcsecond and the secondary was located at a position angle of 210°. [12] The separation between the components increased to 1.34" and the position angle of the secondary shifted to 162° in 1997. At this separation, the components can be resolved in an amateur telescope, but the individual characteristics of both stars cannot be studied. As of 2015, the secondary is located at a distance of 1.4" along a position angle of 159°. [13] The two stars take about 795 years to circle each other in a very eccentric orbit. [8]

The system has a combined stellar classification of F0 IV/V, [4] indicating that it is an evolved F-type star that has the blended luminosity class of a subgiant and main sequence star. The components have masses 1.69 and 1.57 times that of the Sun respectively. [9]

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<span class="mw-page-title-main">HD 106248</span> Star in the constellation Chamaeleon

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

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<span class="mw-page-title-main">HD 187420/187421</span> Binary star in the constellation Telescopium

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<span class="mw-page-title-main">7 Leonis Minoris</span> G-type giant in the constellation Leo Minor

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<span class="mw-page-title-main">HD 23523</span> Visual binary; Camelopardalis

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HD 181295 is a star located in the southern constellation Telescopium. It has an apparent magnitude of 6.42, placing it near the limit of naked eye visibility, even under ideal conditions. The object is located relatively close at a distance of approximately 252 light-years based on Gaia DR3 parallax measurements, and it is currently drifting closer with a heliocentric radial velocity of −35.7 km/s. At its current distance, HD 181295's brightness is diminished by 0.22 magnitudes due to interstellar extinction and it has an absolute magnitude +2.14.

<span class="mw-page-title-main">HD 195479</span> Am star in the constellation Delphinus.

HD 195479, also designated as HR 7839, is a solitary star located in the northern constellation Delphinus, the dolphin. It has an apparent magnitude of 6.20, placing it near the limit for naked eye visibility, even under ideal conditions. The object is located relatively close at a distance of 288 light-years based on Gaia DR3 parallax measurements and it is drifting closer with a heliocentric radial velocity of −40.1 km/s. At its current distance, HD 195479's brightness is diminished by an interstellar extinction of 0.27 magnitudes and it has an absolute magnitude of +1.53.

References

  1. 1 2 3 4 5 6 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.
  2. 1 2 3 Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (March 2002). "The Tycho double star catalogue". Astronomy & Astrophysics. 384 (1): 180–189. Bibcode:2002A&A...384..180F. doi: 10.1051/0004-6361:20011822 . eISSN   1432-0746. ISSN   0004-6361.
  3. 1 2 3 4 5 6 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.
  4. 1 2 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.
  5. 1 2 Fabricius, C.; Makarov, V. V. (April 2000). "Two-colour photometry for 9473 components of close Hipparcos double and multiple stars". Astronomy and Astrophysics. 356: 141–145. Bibcode:2000A&A...356..141F. eISSN   1432-0746. ISSN   0004-6361.
  6. 1 2 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.
  7. 1 2 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.
  8. 1 2 Zirm, H. (June 2013). "Information Circular No. 180" (PDF). International Astronomical Union Commission 26. ISSN   1024-7769.
  9. 1 2 3 Chulkov, Dmitry; Malkov, Oleg (October 20, 2022). "Visual binary stars with known orbits in Gaia EDR3". Monthly Notices of the Royal Astronomical Society. 517 (2): 2925–2941. arXiv: 2206.00604 . Bibcode:2022MNRAS.517.2925C. doi: 10.1093/mnras/stac2827 . ISSN   0035-8711. S2CID   249240123.
  10. ↑ 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.
  11. ↑ "HD 36584". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved February 26, 2024.
  12. ↑ Gill, David; Astronomer, H. M. (June 1898). "Fifth list of new double stars". Astronomische Nachrichten. 146 (21): 369–372. Bibcode:1898AN....146..369G. doi:10.1002/asna.18981462104. ISSN   0004-6337.
  13. ↑ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode:2001AJ....122.3466M. doi: 10.1086/323920 . ISSN   0004-6256. S2CID   119533755.
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