HR4636

Below the horizon. Rise: 11:38 | Tran: 17:36 | Set: 23:37

Alt: -6.48° Az: 224.06° Direction: South-West

HR4636 is a double hypergiant star of spectral class K0 in the constellation of Centaurus.

HR4636 visual magnitude is 6.61. Because of its faintness, HR4636 is not visible to the naked eye.

DSS2 image of HR4636. The red arrow shows the motion of HR4636 during the next 10000 years (-3.00 arcmin in Right Ascension and 1.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 12h 12m 23s

Declination -45° 33’ 52”

Hour Angle 06h 36m 57s

Sidereal Time 18h 49m 20s

J2000

Right Ascension 12h 11m 02s

Declination -45° 25’ 22”

Galactic Coordinates

Galactic Longitude 295.54°

Galactic Latitude 16.87°

Finder Chart

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Finder chart for HR4636.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.61

Class Hypergiant

Absolute magnitude -1.30

Spectral Type K0III

Color Index (B-V) 1.08

Temperature 4559K

The red dot in the diagram below shows where HR4636 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4636. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4636 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR4636 double sysyem:

Main star magnitude 6.61

Secondary star magnitude 10.41

Magnitude difference 3.8

Separation 2.3 arcsec

Distance, Radial Speed, Proper Motion

HR4636 is distant 1,244.27 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 381.68

Distance (light year) 1,244.27

Radial Speed 6 km/s

Proper Motion RA -0.018 arcsec/y

Proper Motion Dec 0.009"/y

Alternative Designations

Henry Draper Catalogue HD105852

SAO Catalogue SAO223266

Hipparcos Catalogue HIP59392

Durchmusterung Catalogue CD-44 7845

Visibility from Your Location

Today's HR4636 rise, transit and set times from Cayambe, Ecuador are the following (all times relative to the local timezone America/Guayaquil):

Azimuth: 135.6° RISE 11:38

Max altitude: 44.4° TRANSIT 17:36

Azimuth: 224.4° SET 23:37

Name:	Cayambe, Ecuador
Latitude:	0° 2' 27.0" N
Longitude:	78° 8' 42.7" W
Timezone:	America/Guayaquil

Set Location

Other stars in Centaurus