HR577

Below the horizon. Rise: 19:24 | Tran: 3:22 | Set: 11:16

Alt: -7.42° Az: 41.54° Direction: North-East

HR577 is a multiple hypergiant star of spectral class K0 in the constellation of Aries.

HR577 visual magnitude is 5.87. Because of its faintness, HR577 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 HR577. The red arrow shows the motion of HR577 during the next 1000 years (2.32 arcmin in Right Ascension and -0.37 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 02h 00m 58s

Declination +21° 10’ 38”

Hour Angle 14h 59m 22s

Sideral Time 17h 00m 20s

J2000

Right Ascension 01h 59m 35s

Declination +21° 03’ 29”

Galactic Coordinates

Galactic Longitude 143.55°

Galactic Latitude -39.07°

Finder Chart

Simplified finder chart for HR577.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.87

Class Hypergiant

Absolute magnitude 0.43

Spectral Type K0III

Color Index (B-V) 1.03

Temperature 4672K

The red dot in the diagram below shows where HR577 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR577. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR577 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR577 double sysyem:

Main star magnitude 5.87

Secondary star magnitude 9.17

Magnitude difference 3.3

Separation 188.1 arcsec

Distance, Radial Speed, Proper Motion

HR577 is distant 399.02 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

Distance (parsec) 122.40

Distance (light year) 399.02

Radial Speed -2 km/s

Proper Motion RA 0.139 arcsec/y

Proper Motion Dec -0.022"/y

Alternative Designations

Henry Draper Catalogue HD12139

SAO Catalogue SAO75077

Hipparcos Catalogue HIP9307

Durchmusterung Catalogue BD+20 322

Aitken Double Star Catalogue ADS1582

Visibility from Your Location

Today's HR577 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 68.8° RISE 19:24

Max altitude: 59.7° TRANSIT 3:22

Azimuth: 291.2° SET 11:16

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Aries