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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Hydra » 

HR3758

Altitude: 7.3°   Azimuth: 258.7°   Direction: West-South-West

HR3758 is a double hypergiant star in the constellation of Hydra.

HR3758 visual magnitude is 6.27. Because of its reltive faintness, HR3758 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 HR3758:

6.27
Hypergiant

HR3758 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 7.3°
Azimuth: 258.7°
Direction: West-South-West

Celestial coordinates and finder chart of HR3758

HR3758 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 HR3758 are provided in the following table:

09h 29m 02s
-01° 15’ 24”
234.73°
33.7°
Hydra

The simplified sky map below shows the position of HR3758 in the sky:

Finder chart HR3758 star
Simplified finder chart for HR3758.

Visibility of HR3758 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 HR3758 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: 91.3°
Max altitude: 37.3°
Azimuth: 268.7°

Digitized Sky Survey image of HR3758

The image below is a photograph of HR3758 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 HR3758 is -0.073 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3758 star
DSS2 image of HR3758. The red arrow shows the motion of HR3758 during the next 10000 years (-12.17 arcmin in Right Ascension and 0.17 arcmin in declination);

Distance of HR3758 from the Sun and relative movement

HR3758 is distant 297.45 light years from the Sun

91.24 pc
297.45 ly
-0.073 arcsec/year
0.001 arcsec/year

Spectral properties of HR3758

HR3758 belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.

1.47
F0V
7658K

The red dot in the diagram below shows where HR3758 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3758. Attribution: Richard Powell / CC BY-SA

HR3758 star system properties

HR3758 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR3758 double sysyem:

6.27
11.27
5
1.3 arcsec

Alternative designations of HR3758

SAO136894
SAO136894