HR2455

Above the horizon. Rise: 11:26 | Tran: 15:11 | Set: 18:55

Alt: 14.59° Az: 174.02° Direction: South

HR2455 is a double hypergiant star of spectral class A0 in the constellation of Canis Major.

HR2455 visual magnitude is 6.05. Because of its faintness, HR2455 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 HR2455. The red arrow shows the motion of HR2455 during the next 10000 years (2.17 arcmin in Right Ascension and -0.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 06h 40m 39s

Declination -23° 43’ 12”

Hour Angle 23h 34m 42s

Sidereal Time 06h 15m 21s

J2000

Right Ascension 06h 39m 36s

Declination -23° 41’ 44”

Galactic Coordinates

Galactic Longitude 233.11°

Galactic Latitude -13.02°

Finder Chart

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Finder chart for HR2455.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.05

Class Hypergiant

Absolute magnitude -0.32

Spectral Type A0

Color Index (B-V) -0.03

Temperature 10516K

The red dot in the diagram below shows where HR2455 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2455. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR2455 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR2455 double sysyem:

Main star magnitude 6.05

Secondary star magnitude 6.45

Magnitude difference 0.4

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

HR2455 is distant 613.94 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

Distance (parsec) 188.32

Distance (light year) 613.94

Radial Speed 26 km/s

Proper Motion RA 0.013 arcsec/y

Proper Motion Dec -0.002"/y

Alternative Designations

Henry Draper Catalogue HD47827

SAO Catalogue SAO172102

Hipparcos Catalogue HIP31859

Durchmusterung Catalogue CD-23 4172

Visibility from Your Location

Today's HR2455 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.7° RISE 11:26

Max altitude: 14.8° TRANSIT 15:11

Azimuth: 246.3° SET 18:55

Set Location

Other stars in Canis Major