HR3638

Above the horizon. Rise: 9:14 | Tran: 14:56 | Set: 20:38

Alt: 20.22° Az: 114.97° Direction: East-South-East

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 15s

Declination -18° 25’ 59”

Hour Angle 19h 45m 05s

Sidereal Time 04h 55m 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 Gora, Nigeria are the following (all times relative to the local timezone Africa/Lagos):

Azimuth: 108.4° RISE 9:14

Max altitude: 59.7° TRANSIT 14:56

Azimuth: 251.6° SET 20:38

Name:	Gora, Nigeria
Latitude:	11° 54' 46.4" N
Longitude:	7° 39' 55.1" E
Timezone:	Africa/Lagos

Set Location

Other stars in Hydra