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Revision as of 12:59, 7 November 2024 editAluminiumWithAnI (talk | contribs)Extended confirmed users2,322 edits variable star designation← Previous edit Revision as of 01:14, 10 November 2024 edit undoAluminiumWithAnI (talk | contribs)Extended confirmed users2,322 edits starboxNext edit →
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{{Draft article}} {{Draft article}}
{{use dmy dates|date=November 2024}}
{{short description|Triple star system in the constellation Cassiopeia}}
{{Starbox begin}}
{{Starbox image
| image=
{{Location mark
|image=Cassiopeia constellation map.svg|alt=|float=center|width=280
|label=|position=right
|mark=Red circle.svg|mark_width=10|mark_link=HD 1976
|x=521|y=735
}}
|caption=Location of HD 1976 (circled)
}}
{{Starbox observe
|epoch=]<ref name="EDR3"/>
|constell=]
|ra={{RA|00|24|15.65400}}
|dec={{DEC|+52|01|11.7032}}
|appmag_v=5.580 (combined)<ref name=TYC2000/>
}}
{{Starbox character
|class=(B5IV<ref name="SIMBAD"/> + A or F) + B
|u-b=-0.619<ref name="SIMBAD"/>
|b-v=-0.121<ref name=TYC2000/>
|j-h=-0.102<ref name="SIMBAD"/>
|j-k=-0.106<ref name="SIMBAD"/>
|variable=] (A)
}}
{{Starbox astrometry
|radial_v=−9.70 ± 0.49<ref name="EDR3"/>
|prop_mo_ra=15.504<ref name="EDR3"/>
|prop_mo_dec=-4.061<ref name="EDR3"/>
|parallax=2.4621
|p_error=0.33
|parallax_footnote=<ref name="EDR3"/>
|absmag_v=
}}
{{Starbox orbit
|reference=
|primary=HD 1976 A
|name=HD 1976 B
|period_unitless=
|axis=
|axis_unitless=
|inclination=
|node=
|periastron=
|eccentricity=
|periarg=
|k1=
|k2=
}}
{{Starbox orbit
|reference=
|primary=HD 1976 AB
|name=HD 1976 C
|period_unitless=
|axis=
|axis_unitless=
|eccentricity=
|inclination=
|node=
|periastron=
|periarg=
|k1=
|k2=
}}
{{Starbox detail
|component1=HD 1976 A
|mass=
|gravity=
|metal_fe=
|temperature=
|rotational_velocity=
|age_myr=
|component2=HD 1976 B
|mass2=
}}
{{Starbox detail|no_heading=y
|component1=HD 1976 C
|mass=
|mass_mj=
|luminosity=
}}
{{Starbox catalog
|names={{odlist|2MASS=J00241564+5201119|AG=+51°39|BD=+51°62|ALS=14565|GC=476|GSC=03260-02342|HD=1976|HIP=1921|HR=91|PPM=25297|SAO=21366|TIC=202418751|TYC=3260-2342-1|Gaia DR3=418916648901801728|WDS=J00243+5201AB|V=V746 Cassiopeiae}},<ref name="SIMBAD"/>
}}
{{Starbox reference
|Simbad=HD+1976|sn=HD 1976
}}
{{Starbox end}}
'''HD 1976''' is a ] in the deep northern ] of ], approximately {{convert|1100|ly|pc|abbr=off}} from ]. It has the ] '''V746 Cassiopeiae''' (abbreviated to V746 Cas). With an ] of 5.580, the system is faintly visible to the naked eye under dark skies. It consists of an inner pair between a ] and a less massive unknown-type star, which is distantly orbited by another ]. It is currently moving closer towards the ] at a heliocentric ] of −9.70 km/s. '''HD 1976''' is a ] in the deep northern ] of ], approximately {{convert|1100|ly|pc|abbr=off}} from ]. It has the ] '''V746 Cassiopeiae''' (abbreviated to V746 Cas). With an ] of 5.580, the system is faintly visible to the naked eye under dark skies. It consists of an inner pair between a ] and a less massive unknown-type star, which is distantly orbited by another ]. It is currently moving closer towards the ] at a heliocentric ] of −9.70 km/s.
==Stellar properties==
==References== ==References==
{{reflist|refs=
<ref name=SIMBAD>{{cite simbad|title=HD 1976|access-date=2024-11-10}}</ref>

<ref name=EDR3>{{cite Gaia EDR3|418916648901801728}}</ref>

<ref name=TYC2000>{{cite journal | display-authors=1 | title=The Tycho-2 Catalogue of the 2.5 Million Brightest Stars | last1=Høg | first1=E. | last2=Fabricius | first2=C. | last3=Makarov | first3=V. V. | last4=Urban | first4=S. | last5=Corbin | first5=T. | last6=Wycoff | first6=G. | last7=Bastian | first7=U. | last8=Schwekendiek | first8=P. | last9=Wicenec | first9=A. | journal=Astronomy and Astrophysics | volume=355 | issue=1 | pages=L27–L30 | date=February 2000 | bibcode=2000A&A...355L..27H}}</ref>
}}

* {{cite journal | last=Neiner | first=C. | last2=Tkachenko | first2=A. | author3=MiMeS collaboration | title=Discovery of a magnetic field in the B pulsating system HD 1976 | journal=Astronomy &amp; Astrophysics | publisher=EDP Sciences | volume=563 | year=2014 | issn=0004-6361 | doi=10.1051/0004-6361/201423595 | doi-access=free | page=L7}} * {{cite journal | last=Neiner | first=C. | last2=Tkachenko | first2=A. | author3=MiMeS collaboration | title=Discovery of a magnetic field in the B pulsating system HD 1976 | journal=Astronomy &amp; Astrophysics | publisher=EDP Sciences | volume=563 | year=2014 | issn=0004-6361 | doi=10.1051/0004-6361/201423595 | doi-access=free | page=L7}}


Revision as of 01:14, 10 November 2024

Triple star system in the constellation Cassiopeia
HD 1976
Location of HD 1976 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia
Right ascension 00 24 15.65400
Declination +52° 01′ 11.7032″
Apparent magnitude (V) 5.580 (combined)
Characteristics
Spectral type (B5IV + A or F) + B
U−B color index -0.619
B−V color index -0.121
J−H color index -0.102
J−K color index -0.106
Variable type Slowly pulsating B-type star (A)
Astrometry
Radial velocity (Rv)−9.70 ± 0.49 km/s
Proper motion (μ) RA: 15.504 mas/yr
Dec.: -4.061 mas/yr
Parallax (π)2.4621 ± 0.33 mas
Distanceapprox. 1,300 ly
(approx. 410 pc)
Orbit
PrimaryHD 1976 A
CompanionHD 1976 B
Orbit
PrimaryHD 1976 AB
CompanionHD 1976 C
Details
HD 1976 A
HD 1976 B
HD 1976 C
Other designations
V746 Cassiopeiae, AG+51°39, BD+51°62, Gaia DR3 418916648901801728, GC 476, HD 1976, HIP 1921, HR 91, SAO 21366, PPM 25297, WDS J00243+5201AB, TIC 202418751, TYC 3260-2342-1, GSC 03260-02342, 2MASS J00241564+5201119,
Database references
SIMBADHD 1976

HD 1976 is a hierarchical triple system in the deep northern constellation of Cassiopeia, approximately 1,100 light-years (340 parsecs) from Earth. It has the variable-star designation V746 Cassiopeiae (abbreviated to V746 Cas). With an apparent magnitude of 5.580, the system is faintly visible to the naked eye under dark skies. It consists of an inner pair between a slowly pulsating B-type star and a less massive unknown-type star, which is distantly orbited by another B-type star. It is currently moving closer towards the Solar System at a heliocentric radial velocity of −9.70 km/s.

Stellar properties

References

  1. ^ 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.
  2. ^ Høg, E.; et al. (February 2000). "The Tycho-2 Catalogue of the 2.5 Million Brightest Stars". Astronomy and Astrophysics. 355 (1): L27 – L30. Bibcode:2000A&A...355L..27H.
  3. ^ "HD 1976". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 November 2024.
  • Docobo, J. A.; Costa, J. M. (1986). "First orbits for the visual double stars ADS 328, ADS 9043, and ADS 13048". The Astrophysical Journal Supplement Series. 60. American Astronomical Society: 945. doi:10.1086/191106. ISSN 0067-0049.