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: 6:43  
clear_day Transit: 12:51  
SunsetSet: 18:59 south
sunny DaytimeWhat's Visible Now
All Constellations » Hydra » 


Altitude: -26.0°   Azimuth: 279.4°   Direction: West

HR3687 is a giant star in the constellation of Hydra.

HR3687 visual magnitude is 5.84. Because of its reltive faintness, HR3687 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 HR3687:


HR3687 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -26.0°
Azimuth: 279.4°
Direction: West

Celestial coordinates and finder chart of HR3687

HR3687 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 HR3687 are provided in the following table:

09h 17m 07s
-14° 34’ 24”

The simplified sky map below shows the position of HR3687 in the sky:

Finder chart HR3687 star
Simplified finder chart for HR3687.

Visibility of HR3687 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 HR3687 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: 104.6°
Max altitude: 23.9°
Azimuth: 255.4°

Digitized Sky Survey image of HR3687

The image below is a photograph of HR3687 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 HR3687 is -0.048 arcsec per year in Right Ascension and 0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3687 star
DSS2 image of HR3687. The red arrow shows the motion of HR3687 during the next 10000 years (-8.00 arcmin in Right Ascension and 2.00 arcmin in declination);

Distance of HR3687 from the Sun and relative movement

HR3687 is distant 389.49 light years from the Sun and it is moving towards the Sun at the speed of 37 kilometers per second.

119.47 pc
389.49 ly
-37 km/s
-0.048 arcsec/year
0.012 arcsec/year

Spectral properties of HR3687

HR3687 belongs to spectral class K0


The red dot in the diagram below shows where HR3687 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3687. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3687