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🌎  Greenwich, United Kingdom [change]

HR257

HR257 is a variable giant star in the constellation of Tucana.

HR257 visual magnitude is 5.7. Because of its reltive faintness, HR257 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 HR257:

5.7
Giant
HR257 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR257

HR257 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR257 are provided in the following table:

00h 53m 37s
-62° 52’ 17”
302.51°
-54.25°
Tucana

The simplified sky map below shows the position of HR257 in the sky:

Finder chart HR257 star
Simplified finder chart for HR257.

Visibility of HR257 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR257 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR257

The image below is a photograph of HR257 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 HR257 is 0.073 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR257 star
DSS2 image of HR257. The red arrow shows the motion of HR257 during the next 10000 years (12.17 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of HR257 from the Sun and relative movement

HR257 is distant 612.78 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

187.97 pc
612.78 ly
-10 km/s
0.073 arcsec/year
0.004 arcsec/year

Spectral properties of HR257

HR257 belongs to spectral class M4 and has a luminosity class of III corresponding to a giant star.

-0.67
M4III
3705K

The red dot in the diagram below shows where HR257 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR257. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR257

SAO248276
SAO248276