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In Evidence
Other stars in Aries
- Hamal
- Sheratan
- Bharani
- Botein
- HR999
- Lilii Borea
- ε Arietis
- 35 Arietis
- Mesarthim
- λ Arietis
- γ1 Arietis
- ζ Arietis
- 14 Arietis
- κ Arietis
- τ2 Arietis
- ι Arietis
- 38 Arietis
- π Arietis
- η Arietis
- τ1 Arietis
- 33 Arietis
- ν Arietis
- ξ Arietis
- σ Arietis
- 64 Arietis
- HR971
- 62 Arietis
- 21 Arietis
- HR931
- θ Arietis
- 10 Arietis
- ρ3 Arietis
- 31 Arietis
- μ Arietis
- 15 Arietis
- 19 Arietis
- 55 Arietis
- 7 Arietis
- ο Arietis
- 20 Arietis
- 56 Arietis
- 47 Arietis
- 40 Arietis
- 4 Arietis
- HR830
- 1 Arietis
- HR577
- 49 Arietis
- 59 Arietis
- ρ2 Arietis
- HR728
- HR601
- HR534
- HR902
- HR644
- HR948
- HR946
- 16 Arietis
- 66 Arietis
- 29 Arietis
- 65 Arietis
- HR578
- 53 Arietis
- HR952
- 60 Arietis
- 11 Arietis
- 26 Arietis
- HR711
- HR723
- HR609
- 27 Arietis
- 54 Arietis
- HR797
- HR803
- HR916
- HR945
- HR624
- HR676
- 36 Arietis
- HR924
- 30 Arietis
- HR665
- 52 Arietis
HR644
HR644 is a hypergiant star in the constellation of Aries.
HR644 visual magnitude is 5.96. Because of its reltive faintness, HR644 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.
The table below summarizes the key facts about HR644:
Celestial coordinates and finder chart of HR644
HR644 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR644 are provided in the following table:
The simplified sky map below shows the position of HR644 in the sky:
Visibility of HR644 from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's HR644 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of HR644
The image below is a photograph of HR644 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR644 is 0.041 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR644 from the Sun and relative movement
HR644 is distant 564.99 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.
Spectral properties of HR644
HR644 belongs to spectral class K0
The red dot in the diagram below shows where HR644 is situated in the Hertzsprung–Russell diagram.
