HR9

Below the horizon. Rise: 21:16 | Tran: 1:10 | Set: 5:00

Alt: -22.80° Az: 261.28° Direction: West

HR9 is a main-sequence star of spectral class A7 in the constellation of Cetus.

HR9 visual magnitude is 6.18. Because of its faintness, HR9 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 HR9. The red arrow shows the motion of HR9 during the next 1000 years (1.67 arcmin in Right Ascension and -0.75 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 00h 08m 05s

Declination -22° 58’ 11”

Hour Angle 06h 32m 59s

Sideral Time 06h 41m 04s

J2000

Right Ascension 00h 06m 50s

Declination -23° 06’ 27”

Galactic Coordinates

Galactic Longitude 52.21°

Galactic Latitude -79.14°

Finder Chart

Simplified finder chart for HR9.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.18

Class Main-sequence

Absolute magnitude 3.22

Spectral Type A7V

Color Index (B-V) 0.38

Temperature 6989K

The red dot in the diagram below shows where HR9 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR9. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR9 is distant 127.39 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 39.08

Distance (light year) 127.39

Radial Speed 3 km/s

Proper Motion RA 0.1 arcsec/y

Proper Motion Dec -0.045"/y

Alternative Designations

Henry Draper Catalogue HD203

SAO Catalogue SAO166053

Hipparcos Catalogue HIP560

Durchmusterung Catalogue CD-23 4

FK5 Catalogue 1003

Visibility from Your Location

Today's HR9 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.0° RISE 21:16

Max altitude: 15.6° TRANSIT 1:10

Azimuth: 247.0° SET 5:00

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

Location

Other stars in Cetus

HR9