υ2 Hydrae (upsilon2 Hydrae)

Below the horizon. Rise: 6:13 | Tran: 11:03 | Set: 15:53

Alt: -26.16° Az: 77.93° Direction: East-North-East

υ2 Hydrae is a variable giant star of spectral class B9 in the constellation of Hydra.

υ2 Hydrae visual magnitude is 4.6. Because of its moderate brightness, υ2 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.

Image of υ2 Hydrae (upsilon2 Hydrae) star

DSS2 image of υ2 Hydrae. The red arrow shows the motion of υ2 Hydrae during the next 10000 years (-6.17 arcmin in Right Ascension and 3.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 06m 19s

Declination -13° 11’ 08”

Hour Angle 16h 17m 24s

Sideral Time 02h 23m 44s

J2000

Right Ascension 10h 05m 07s

Declination -13° 03’ 52”

Galactic Coordinates

Galactic Longitude 252.46°

Galactic Latitude 33.06°

Finder Chart

Simplified finder chart for υ2 Hydrae (upsilon2 Hydrae).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.6

Class Giant

Absolute magnitude -0.05

Spectral Type B9III

Color Index (B-V) -0.09

Temperature 11407K

The red dot in the diagram below shows where υ2 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of υ2 Hydrae. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

υ2 Hydrae is distant 276.98 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

Distance (parsec) 84.96

Distance (light year) 276.98

Radial Speed 28 km/s

Proper Motion RA -0.037 arcsec/y

Proper Motion Dec 0.018"/y

Alternative Designations

Bayer designation υ2 Hydrae
(upsilon2 Hydrae)

Flamsteed designation 40 Hydrae

Henry Draper Catalogue HD87504

SAO Catalogue SAO155713

Hipparcos Catalogue HIP49402

Durchmusterung Catalogue BD-12 3073

FK5 Catalogue 1261

General Catalogue of Variable Stars 4725

Visibility from Your Location

Today's υ2 Hydrae (upsilon2 Hydrae) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 103.2° RISE 6:13

Max altitude: 25.3° TRANSIT 11:03

Azimuth: 256.8° SET 15:53

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

Location

Other stars in Hydra