3 Hydrae

Altitude: -13.2° Azimuth: 86.3° Direction: East

3 Hydrae is a variable star in the constellation of Hydra.

3 Hydrae visual magnitude is 5.72. Because of its reltive faintness, 3 Hydrae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 3 Hydrae:

Color of 3 Hydrae ⬤

Magnitude of 3 Hydrae 5.72

Class

VISIBILITY RIGHT NOW

3 Hydrae is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -13.2°
Azimuth: 86.3°
Direction: East

Celestial coordinates and finder chart of 3 Hydrae

3 Hydrae is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 3 Hydrae are provided in the following table:

Right Ascension J2000 08h 35m 28s

Declination J2000 -07° 58’ 55”

Galactic Longitude 232.8°

Galactic Latitude 18.85°

Constellation Hydra

The simplified sky map below shows the position of 3 Hydrae in the sky:

Simplified finder chart for 3 Hydrae.

Visibility of 3 Hydrae from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 3 Hydrae rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 98.0° RISE 21:59

Max altitude: 30.5° TRANSIT 3:21

Azimuth: 262.0° SET 8:38

Digitized Sky Survey image of 3 Hydrae

The image below is a photograph of 3 Hydrae from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 3 Hydrae is -0.02 arcsec per year in Right Ascension and 0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 3 Hydrae. The red arrow shows the motion of 3 Hydrae during the next 10000 years (-3.33 arcmin in Right Ascension and 2.17 arcmin in declination);

Distance of 3 Hydrae from the Sun and relative movement

3 Hydrae is distant 268.31 light years from the Sun and it is moving far from the Sun at the speed of 24 kilometers per second.

Distance (parsec) 82.30 pc

Distance (light year) 268.31 ly

Heliocentric radial velocity 24 km/s

Proper Motion RA -0.02 arcsec/year

Proper Motion Dec 0.013 arcsec/year

Spectral properties of 3 Hydrae

3 Hydrae belongs to spectral class A1 3 Hydrae is also a SrCrEu chemically peculiar star.

Absolute magnitude 1.14

Spectral Type A1

Color Index (B-V) -0.03

Temperature of 3 Hydrae 10516K

The red dot in the diagram below shows where 3 Hydrae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 3 Hydrae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 3 Hydrae

Flamsteed designation 3 Hydrae

Henry Draper Catalogue HD72968

SAO Catalogue SAO136076

Hipparcos Catalogue HIP42146

Durchmusterung Catalogue BD-07 2540

FK5 Catalogue 2672

General Catalogue of Variable Stars HV Hya

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