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Delta Cassiopeiae information


δ Cassiopeiae
Location of δ Cassiopeiae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia
Right ascension 01h 25m 48.95147s[1]
Declination +60° 14′ 07.0225″[1]
Apparent magnitude (V) 2.68[2]
Characteristics
Spectral type A5 IV[3]
U−B color index +0.13[2]
B−V color index +0.13[2]
Variable type Algol?[4]
Astrometry
Radial velocity (Rv)−6.7[5] km/s
Proper motion (μ) RA: 296.57[1] mas/yr
Dec.: –49.22[1] mas/yr
Parallax (π)32.81 ± 0.14 mas[1]
Distance99.4 ± 0.4 ly
(30.5 ± 0.1 pc)
Absolute magnitude (MV)+0.28[6]
Details
Mass2.49[7] M
Radius3.90[8] R
Luminosity72.88[7] L
Temperature7,980[7] K
Rotational velocity (v sin i)123[7] km/s
Age6.0×108[8] years
Other designations
Ruchbah, Ksora,[9] Rucba, Rucbar,[10] 37 Cassiopeiae, BD+59°248, FK5 48, HD 8538, HIP 6686, HR 403, SAO 22268, WDS J01258+6014A[11]
Database references
SIMBADdata

Delta Cassiopeiae (δ Cassiopeiae, abbreviated Delta Cas, δ Cas) is an eclipsing binary star system in the northern circumpolar constellation of Cassiopeia. Based on parallax measurements taken during the Hipparcos mission, it is approximately 99.4 light-years (30.5 parsecs) from the Earth.[1]

Delta Cassiopeiae is the primary or 'A' component of a multiple star system designated WDS J01258+6014. Delta Cassiopeiae's two components are therefore designated WDS J01258+6014 Aa and Ab. Aa is officially named Ruchbah /ˈrʌkbə/, the traditional name for the system.[12][13]

  1. ^ a b c d e f Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference gray was invoked but never defined (see the help page).
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  6. ^ Cite error: The named reference Eggen1998 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference zorec was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference apj660_2_1556 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference bakich1995 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference hinkley1899 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Rumrill was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference IAU-LSN was invoked but never defined (see the help page).

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Delta Cassiopeiae

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Delta CassiopeiaeCassiopeiae, abbreviated Delta Cas, δ Cas) is an eclipsing binary star system in the northern circumpolar constellation of Cassiopeia...

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Beta Cassiopeiae

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Beta CassiopeiaeCassiopeiae, abbreviated Beta Cas or β Cas), officially named Caph /ˈkæf/, is a Delta Scuti variable star in the constellation of Cassiopeia...

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Alpha Cassiopeiae

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Alpha Cassiopeiae or α Cassiopeiae, also named Schedar (/ˈʃɛdɑːr/), is a second-magnitude star in the northern constellation of Cassiopeia. Though listed...

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List of brightest natural objects in the sky

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Star 2.668 Delta Sagittarii Star 2.68 Beta Lupi Star 2.68 Eta Boötis Binary star system 2.68 Andromeda Galaxy Galaxy 2.68 Delta Cassiopeiae Binary star...

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Messier 103

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it was a double star on Cassiopeia's knee, about 1° northeast of Delta Cassiopeiae, sometimes called as Ruchbah or Rukhbah. Messier 103 is an easy object...

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Eta Cassiopeiae

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Eta CassiopeiaeCassiopeiae, abbreviated Eta Cas, η Cas) is a binary star system in the northern constellation of Cassiopeia. Its binary nature was...

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List of Arabic star names

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the Well-Rope الرشاء Alpha Piscium Rukbah ar-Rukbah the Knee الركبة Delta Cassiopeiae Rukbat Rukbat ur-Rāmī Knee of the archer ركبة الرامي Alpha Sagittarii...

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Alpha Aquarii

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had also been applied to this star; though it shared that name with Delta Cassiopeiae. It is only one of two stars with ancient proper names to lie within...

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Epsilon Cassiopeiae

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consisting of Epsilon Cassiopeiae, Iota Cassiopeiae, Delta Cassiopeiae, Theta Cassiopeiae, Nu Cassiopeiae and Omicron Cassiopeiae. Consequently, the Chinese...

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Alpha Sagittarii

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from the Arabic rukbat al-rāmī 'the knee of the archer'. The star Delta Cassiopeiae also bore the traditional names Ruchbah or Rukbat, from the Arabic...

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Rucbah

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constellation Aquarius (this star is now called Sadalmelik by the IAU) Delta Cassiopeiae in the constellation Cassiopeia (this star is now called Ruchbah by...

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Theta Cassiopeiae

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consisting of θ Cassiopeiae, ι Cassiopeiae, ε Cassiopeiae, δ Cassiopeiae, ν Cassiopeiae and ο Cassiopeiae. Consequently, θ Cassiopeiae itself is known...

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Delta Scorpii

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very little empty space anywhere in the main ring system." Delta Scorpii A is a Gamma Cassiopeiae variable star. This type of star shows irregular slow brightness...

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Delta Scuti variable

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this remains unconfirmed. Other examples include - σ Octantis and β Cassiopeiae "Light Curve". Hipparcos ESA. ESA. Retrieved 17 February 2022. McNamara...

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NGC 654

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observed by binoculars. It is located 2,5° northeast of the star Delta Cassiopeiae. In the same low power field can also be seen the open clusters NGC...

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Gamma Cassiopeiae variable

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A Gamma Cassiopeiae variable (γ Cassiopeiae variable) is a type of variable star, named for its prototype γ Cassiopeiae. γ Cassiopeiae variables show irregular...

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Delta Pavonis

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Delta Pavonis, Latinized from δ Pavonis, is a single star in the southern constellation of Pavo. It has an apparent visual magnitude of 3.56, making it...

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Delta Centauri

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varies from magnitude +2.51 to +2.65. It has been classified as a γ Cassiopeiae type variable. The energy from this star is being radiated at an effective...

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Alpheratz

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that mark the prime meridian of the heavens, the other two being Beta Cassiopeiae and Gamma Pegasi. It was believed to bless those born under its influence...

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Variable star

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variation on an observable timescale. The best known example is Rho Cassiopeiae. While classed as eruptive variables, these stars do not undergo periodic...

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Terrestrial Planet Finder

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Centaurus 4.3 K1V 3 Tau Ceti Cetus 12 G8V 4 Eta Cassiopeiae Cassiopeia 19 G3V 5 Beta Hydri Hydrus 24 G2IV 6 Delta Pavonis Pavo 20 G8V 7 Pi3 Orionis Orion 26...

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IC 4756

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photometric observations of the selected Algol-type binaries - IV. V799 Cassiopeiae, BX Piscium and HD 172189". Monthly Notices of the Royal Astronomical...

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Canis Major

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each other as viewed from Earth, they are unrelated. Kappa is a Gamma Cassiopeiae variable of spectral type B2Vne, which brightened by 50% between 1963...

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Star system

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the system can be considered a sextuple. Jabbah AR Cassiopeiae V871 Centauri Gamma Cassiopeiae QZ Carinae Exoplanet Solar System The term optical multiple...

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Subgiant

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B0: γ Cassiopeiae, δ Scorpii B0.5: β Scorpii B1: ο Persei, β Cephei B2: γ Orionis, π Scorpii, θ Ophiuchi, λ Scorpii B2.5: γ Pegasi, ζ Cassiopeiae B3: ι...

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List of nearest giant stars

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(2011-05-10). "Colder and Hotter: Interferometric imaging of {\beta} Cassiopeiae and {\alpha} Leonis". The Astrophysical Journal. 732 (2): 68. arXiv:1105...

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