HR2157

Below the horizon. Never rises today

Alt: -7.01° Az: 172.01° Direction: South

HR2157 is a multiple hypergiant star of spectral class G0 in the constellation of Puppis.

HR2157 visual magnitude is 6.35. Because of its faintness, HR2157 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR2157. The red arrow shows the motion of HR2157 during the next 1000 years (-1.33 arcmin in Right Ascension and 4.07 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 06h 05m 11s

Declination -45° 02’ 22”

Hour Angle 23h 14m 57s

Sideral Time 05h 20m 09s

J2000

Right Ascension 06h 04m 28s

Declination -45° 02’ 12”

Galactic Coordinates

Galactic Longitude 252.13°

Galactic Latitude -26.78°

Finder Chart

Simplified finder chart for HR2157.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.35

Class Hypergiant

Absolute magnitude 4.22

Spectral Type G0IV

Color Index (B-V) 0.52

Temperature 6300K

The red dot in the diagram below shows where HR2157 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2157. Attribution: Richard Powell / CC BY-SA

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:

Main star magnitude 6.35

Secondary star magnitude 6.65

Magnitude difference 0.3

Separation 196.7 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 26.70

Distance (light year) 87.03

Radial Speed 26 km/s

Proper Motion RA -0.08 arcsec/y

Proper Motion Dec 0.244"/y

Alternative Designations

Henry Draper Catalogue HD41700

SAO Catalogue SAO217702

Hipparcos Catalogue HIP28764

Durchmusterung Catalogue CD-45 2300

Gliese Catalogue Wo 9200

FK5 Catalogue 231

Visibility from Your Location

HR2157 is currently not visible from Greenwich, UK

Set Location

Other stars in Puppis