Misplaced Pages

HD 1976: Difference between revisions

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Browse history interactively← Previous editNext edit →Content deleted Content addedVisualWikitext
Revision as of 01:14, 10 November 2024 editAluminiumWithAnI (talk | contribs)Extended confirmed users2,322 edits starbox← Previous edit Revision as of 02:55, 10 November 2024 edit undoAluminiumWithAnI (talk | contribs)Extended confirmed users2,322 edits orbital parametersTag: Visual edit: SwitchedNext edit →
Line 38: Line 38:
}} }}
{{Starbox orbit {{Starbox orbit
|reference= |reference=<ref name=Gardner2022/>
|primary=HD 1976 A |primary=HD 1976 Aa
|name=HD 1976 B |name=HD 1976 Ab
|period_unitless= |period_unitless={{val|25.4163|0.0008}} ]
|axis= |axis=
|axis_unitless= |axis_unitless={{val|0.42|0.05}} ]
|inclination= |inclination={{val|100.7|1.2}}
|node= |node={{val|339.9|1.1}}
|periastron= |periastron={{val|59477|5}}
|eccentricity= |eccentricity={{val|0.05|0.03}}
|periarg= |periarg={{val|61|52}}
|k1= |k1=
|k2= |k2=
}} }}
{{Starbox orbit {{Starbox orbit
|reference= |reference=<ref name=Gardner2022/>
|primary=HD 1976 AB |primary=HD 1976 A
|name=HD 1976 C |name=HD 1976 B
|period={{val|171|3}}
|period_unitless=
|axis= |axis=
|axis_unitless= |axis_unitless={{val|208.0|2.7}} ]
|eccentricity= |eccentricity={{val|0.162|0.008}}
|inclination= |inclination={{val|62.8|0.4}}
|node= |node={{val|27.8|0.4}}
|periastron= |periastron={{val|33710|679}}
|periarg= |periarg={{val|306.0|4}}
|k1= |k1=
|k2= |k2=
}} }}
{{Starbox detail {{Starbox detail
|component1=HD 1976 A |component1=HD 1976 Aa
|mass= |mass=
|gravity= |gravity=
Line 75: Line 75:
|rotational_velocity= |rotational_velocity=
|age_myr= |age_myr=
|component2=HD 1976 B |component2=HD 1976 Ab
|mass2= |mass2=
|gravity2=
|metal_fe2=
|temperature2=
|rotational_velocity2=
|age2_myr=
}} }}
{{Starbox detail|no_heading=y {{Starbox detail|no_heading=y
|component1=HD 1976 C |component1=HD 1976 B
|mass= |mass=
|mass_mj= |mass_mj=
Line 92: Line 97:
{{Starbox end}} {{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.
==Properties==
==Stellar properties==
==References== ==References==
{{reflist|refs= {{reflist|refs=
Line 100: Line 105:


<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> <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>

<ref name=Gardner2022>{{Cite journal | display-authors=3 |doi-access=free|last=Gardner |first=Tyler |last2=Monnier |first2=John D. |last3=Fekel |first3=Francis C. |last4=Le Bouquin |first4=Jean-Baptiste |last5=Scovera |first5=Adam |last6=Schaefer |first6=Gail |last7=Kraus |first7=Stefan |last8=Adams |first8=Fred C. |last9=Anugu |first9=Narsireddy |last10=Berger |first10=Jean-Philippe |last11=Ten Brummelaar |first11=Theo |last12=Davies |first12=Claire L. |last13=Ennis |first13=Jacob |last14=Gies |first14=Douglas R. |last15=Johnson |first15=Keith J. C. |date=2022-11-01 |title=ARMADA. II. Further Detections of Inner Companions to Intermediate-mass Binaries with Microarcsecond Astrometry at CHARA and VLTI |url=https://iopscience.iop.org/article/10.3847/1538-3881/ac8eae |journal=The Astronomical Journal |volume=164 |issue=5 |pages=184 |doi=10.3847/1538-3881/ac8eae |issn=0004-6256}}</ref>
}} }}


Revision as of 02:55, 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 Aa
CompanionHD 1976 Ab
Period (P)25.4163±0.0008 d
Semi-major axis (a)0.42±0.05 mas
Eccentricity (e)0.05±0.03
Inclination (i)100.7±1.2°
Longitude of the node (Ω)339.9±1.1°
Periastron epoch (T)59477±5
Argument of periastron (ω)
(secondary)		61±52°
Orbit
PrimaryHD 1976 A
CompanionHD 1976 B
Period (P)171±3 yr
Semi-major axis (a)208.0±2.7 mas
Eccentricity (e)0.162±0.008
Inclination (i)62.8±0.4°
Longitude of the node (Ω)27.8±0.4°
Periastron epoch (T)33710±679
Argument of periastron (ω)
(secondary)		306.0±4°
Details
HD 1976 Aa
HD 1976 Ab
HD 1976 B
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.

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.
  4. ^ Gardner, Tyler; Monnier, John D.; Fekel, Francis C.; et al. (1 November 2022). "ARMADA. II. Further Detections of Inner Companions to Intermediate-mass Binaries with Microarcsecond Astrometry at CHARA and VLTI". The Astronomical Journal. 164 (5): 184. doi:10.3847/1538-3881/ac8eae. ISSN 0004-6256.
  • 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.