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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
SunriseRise: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
sunny DaytimeWhat's Visible Now?
All Constellations » Lynx » 


Altitude: 24.8°   Azimuth: 64.9°   Direction: East-North-East

HR3664 is a double giant star in the constellation of Lynx.

HR3664 visual magnitude is 5.97. Because of its reltive faintness, HR3664 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR3664 is -0.148 arcsec per year in Right Ascension and 0.053 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR3664 star
DSS2 image of HR3664. The red arrow shows the motion of HR3664 during the next 1000 years (-2.47 arcmin in Right Ascension and 0.88 arcmin in declination);

Key facts about HR3664


HR3664 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 24.8°
Azimuth: 64.9°
Direction: East-North-East

Celestial coordinates and finder chart of HR3664

HR3664 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3664 are provided in the following table:

09h 15m 14s
+34° 38’ 00”

The simplified sky map below shows the position of HR3664 in the sky:

Finder chart HR3664 star
Simplified finder chart for HR3664.

Visibility of HR3664 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 HR3664 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: 55.4°
Max altitude: 73.2°
Azimuth: 304.6°

Distance of HR3664 from the Sun and relative movement

HR3664 is distant 454.67 light years from the Sun and it is moving far from the Sun at the speed of 56 kilometers per second.

139.47 pc
454.67 ly
56 km/s
-0.148 arcsec/year
0.053 arcsec/year

Spectral properties of HR3664

HR3664 belongs to spectral class G6 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3664 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3664. Attribution: Richard Powell / CC BY-SA

HR3664 star system properties

HR3664 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR3664 double sysyem:

150.6 arcsec

Alternative designations of HR3664