HR4172

Below the horizon. Rise: 7:03 | Tran: 11:56 | Set: 16:49

Alt: -7.43° Az: 259.13° Direction: West

HR4172 is a hypergiant star of spectral class A0 in the constellation of Hydra.

HR4172 visual magnitude is 6.04. Because of its faintness, HR4172 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 HR4172. The red arrow shows the motion of HR4172 during the next 10000 years (-9.50 arcmin in Right Ascension and 0.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 40m 03s

Declination -12° 34’ 21”

Hour Angle 05h 44m 33s

Sideral Time 16h 24m 37s

J2000

Right Ascension 10h 38m 50s

Declination -12° 26’ 36”

Galactic Coordinates

Galactic Longitude 259.53°

Galactic Latitude 39°

Finder Chart

Simplified finder chart for HR4172.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.04

Class Hypergiant

Absolute magnitude 0.83

Spectral Type A0V

Color Index (B-V) 0

Temperature 10125K

The red dot in the diagram below shows where HR4172 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4172. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR4172 is distant 358.64 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 110.01

Distance (light year) 358.64

Radial Speed 12 km/s

Proper Motion RA -0.057 arcsec/y

Proper Motion Dec 0.002"/y

Alternative Designations

Henry Draper Catalogue HD92245

SAO Catalogue SAO156124

Hipparcos Catalogue HIP52113

Durchmusterung Catalogue BD-11 2925

Visibility from Your Location

Today's HR4172 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.6° RISE 7:03

Max altitude: 25.9° TRANSIT 11:56

Azimuth: 257.4° SET 16:49

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

Location

Other stars in Hydra