HR3638

Below the horizon. Rise: 14:19 | Tran: 18:39 | Set: 22:58

Alt: -55.88° Az: 341.65° Direction: North-North-West

HR3638 is a main-sequence star of spectral class A2 in the constellation of Hydra.

HR3638 visual magnitude is 5.73. Because of its faintness, HR3638 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 HR3638. The red arrow shows the motion of HR3638 during the next 10000 years (-8.67 arcmin in Right Ascension and 1.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 10m 14s

Declination -18° 25’ 57”

Hour Angle 11h 17m 06s

Sidereal Time 20h 27m 20s

J2000

Right Ascension 09h 09m 04s

Declination -18° 19’ 42”

Galactic Coordinates

Galactic Longitude 246.74°

Galactic Latitude 19.51°

Finder Chart

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Finder chart for HR3638.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.73

Class Main-sequence

Absolute magnitude 1.22

Spectral Type A2V

Color Index (B-V) 0

Temperature 10125K

The red dot in the diagram below shows where HR3638 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3638. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR3638 is distant 260.38 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

Distance (parsec) 79.87

Distance (light year) 260.38

Radial Speed 17 km/s

Proper Motion RA -0.052 arcsec/y

Proper Motion Dec 0.009"/y

Alternative Designations

Henry Draper Catalogue HD78702

SAO Catalogue SAO154950

Hipparcos Catalogue HIP44923

Durchmusterung Catalogue BD-17 2765

Visibility from Your Location

Today's HR3638 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.4° RISE 14:19

Max altitude: 20.1° TRANSIT 18:39

Azimuth: 251.6° SET 22:58

Set Location

Other stars in Hydra