HR2157 is a multiple hypergiant star in the constellation of Puppis.
HR2157 visual magnitude is 6.35. Because of its reltive faintness, HR2157 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 HR2157:
Celestial coordinates and finder chart of HR2157
HR2157 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 HR2157 are provided in the following table:
The simplified sky map below shows the position of HR2157 in the sky:
Visibility of HR2157 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR2157 is currently not visible from Greenwich, United Kingdom
Digitized Sky Survey image of HR2157
The image below is a photograph of HR2157 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 HR2157 is -0.08 arcsec per year in Right Ascension and 0.244 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of HR2157 from the Sun and relative movement
HR2157 is distant 87.03 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.
Spectral properties of HR2157
HR2157 belongs to spectral class G0 and has a luminosity class of IV corresponding to a hypergiant star.
The red dot in the diagram below shows where HR2157 is situated in the Hertzsprung–Russell diagram.
HR2157 star system properties
HR2157 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR2157 double sysyem: