Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:45  
clear_day Transit: 12:57  
SunsetSet: 21:10 south
sunny DaytimeWhat's Visible Now
All Constellations » Hydra » 


Altitude: -28.1°   Azimuth: 44.3°   Direction: North-East

HR3618 is a giant star in the constellation of Hydra.

HR3618 visual magnitude is 6.17. Because of its reltive faintness, HR3618 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 HR3618:


HR3618 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -28.1°
Azimuth: 44.3°
Direction: North-East

Celestial coordinates and finder chart of HR3618

HR3618 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 HR3618 are provided in the following table:

09h 06m 59s
+01° 27’ 46”

The simplified sky map below shows the position of HR3618 in the sky:

Finder chart HR3618 star
Simplified finder chart for HR3618.

Visibility of HR3618 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 HR3618 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: 88.5°
Max altitude: 40.0°
Azimuth: 271.5°
HR3618 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3618

The image below is a photograph of HR3618 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 HR3618 is -0.011 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3618 star
DSS2 image of HR3618. The red arrow shows the motion of HR3618 during the next 10000 years (-1.83 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR3618 from the Sun and relative movement

HR3618 is distant 990.88 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

303.95 pc
990.88 ly
3 km/s
-0.011 arcsec/year
-0.015 arcsec/year

Spectral properties of HR3618

HR3618 belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3618 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3618. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3618