Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:52  
clear_day Transit: 12:55  
SunsetSet: 20:59 south
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All Constellations » Puppis » 

HR2957

HR2957 is a variable supergiant star in the constellation of Puppis.

HR2957 visual magnitude is 5.68. Because of its reltive faintness, HR2957 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 HR2957:

5.68
Supergiant
HR2957 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR2957

HR2957 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2957 are provided in the following table:

07h 38m 18s
-48° 36’ 03”
261.31°
-12.86°
Puppis

The simplified sky map below shows the position of HR2957 in the sky:

Finder chart HR2957 star
Simplified finder chart for HR2957.

Visibility of HR2957 from your location

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

HR2957 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR2957

The image below is a photograph of HR2957 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 HR2957 is 0.002 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR2957 star
DSS2 image of HR2957. The red arrow shows the motion of HR2957 during the next 100000 years (3.33 arcmin in Right Ascension and 13.33 arcmin in declination);

Distance of HR2957 from the Sun and relative movement

HR2957 is distant 5,015.38 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

1,538.46 pc
5,015.38 ly
11 km/s
0.002 arcsec/year
0.008 arcsec/year

Spectral properties of HR2957

HR2957 belongs to spectral class F4 and has a luminosity class of I corresponding to a supergiant star.

-5.26
F4I
5778K

The red dot in the diagram below shows where HR2957 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR2957. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2957

SAO218852
SAO218852