χ1 Hydrae (chi1 Hydrae)

Below the horizon. Rise: 16:33 | Tran: 18:27 | Set: 20:20

Alt: -1.52° Az: 149.48° Direction: South

χ1 Hydrae is a double sub-giant star of spectral class F3 in the constellation of Hydra.

χ1 Hydrae visual magnitude is 4.94. Because of its moderate brightness, χ1 Hydrae is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of χ1 Hydrae. The red arrow shows the motion of χ1 Hydrae during the next 1000 years (-3.13 arcmin in Right Ascension and -0.07 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 11h 06m 34s

Declination -27° 25’ 53”

Hour Angle 21h 40m 27s

Sidereal Time 08h 47m 01s

J2000

Right Ascension 11h 05m 19s

Declination -27° 17’ 36”

Galactic Coordinates

Galactic Longitude 275.69°

Galactic Latitude 29.91°

Finder Chart

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Finder chart for χ1 Hydrae (chi1 Hydrae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.94

Class Sub-giant

Absolute magnitude 1.75

Spectral Type F3IV

Color Index (B-V) 0.36

Temperature 7101K

The red dot in the diagram below shows where χ1 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of χ1 Hydrae. Attribution: Richard Powell / CC BY-SA

Star System Properties

χ1 Hydrae is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the χ1 Hydrae double sysyem:

Main star magnitude 4.94

Secondary star magnitude 5.04

Magnitude difference 0.1

Separation 0.2 arcsec

Distance, Radial Speed, Proper Motion

χ1 Hydrae is distant 141.86 light years from the Sun and it is moving far from the Sun at the speed of 17 kilometers per second.

Distance (parsec) 43.52

Distance (light year) 141.86

Radial Speed 17 km/s

Proper Motion RA -0.188 arcsec/y

Proper Motion Dec -0.004"/y

Alternative Designations

Bayer designation χ1 Hydrae
(chi1 Hydrae)

Henry Draper Catalogue HD96202

SAO Catalogue SAO179514

Hipparcos Catalogue HIP54204

Durchmusterung Catalogue CD-26 8338

Gliese Catalogue NN 3642 A

FK5 Catalogue 419

Visibility from Your Location

Today's χ1 Hydrae (chi1 Hydrae) rise, transit and set times from Tallinn, Estonia are the following (all times relative to the local timezone Europe/Tallinn):

Azimuth: 117.4° RISE 16:33

Max altitude: 3.1° TRANSIT 18:27

Azimuth: 242.6° SET 20:20

Name:	Tallinn, Estonia
Latitude:	59° 26' 13.2" N
Longitude:	24° 45' 12.6" E
Timezone:	Europe/Tallinn

Set Location

Other stars in Hydra