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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: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Hydra » 


Altitude: 18.3°   Azimuth: 148.7°   Direction: South-South-East

HR3675 is a variable hypergiant star in the constellation of Hydra.

HR3675 visual magnitude is 6.35. Because of its reltive faintness, HR3675 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 HR3675:


HR3675 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 18.3°
Azimuth: 148.7°
Direction: South-South-East

Celestial coordinates and finder chart of HR3675

HR3675 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 HR3675 are provided in the following table:

09h 15m 24s
-15° 01’ 28”

The simplified sky map below shows the position of HR3675 in the sky:

Finder chart HR3675 star
Simplified finder chart for HR3675.

Visibility of HR3675 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 HR3675 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: 105.0°
Max altitude: 23.5°
Azimuth: 255.0°

Digitized Sky Survey image of HR3675

The image below is a photograph of HR3675 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 HR3675 is -0.026 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3675 star
DSS2 image of HR3675. The red arrow shows the motion of HR3675 during the next 10000 years (-4.33 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of HR3675 from the Sun and relative movement

HR3675 is distant 347.55 light years from the Sun and it is moving far from the Sun at the speed of 32 kilometers per second.

106.61 pc
347.55 ly
32 km/s
-0.026 arcsec/year
-0.014 arcsec/year

Spectral properties of HR3675

HR3675 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3675 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3675. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3675