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: 4:43  
clear_day Transit: 12:58  
SunsetSet: 21:13 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Camelopardalis » 


Altitude: 20.9°   Azimuth: 0.8°   Direction: North

HR1688 is a giant star in the constellation of Camelopardalis.

HR1688 visual magnitude is 6.15. Because of its reltive faintness, HR1688 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 HR1688:


HR1688 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 20.9°
Azimuth: 0.8°
Direction: North

Celestial coordinates and finder chart of HR1688

HR1688 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 HR1688 are provided in the following table:

05h 15m 11s
+59° 24’ 20”

The simplified sky map below shows the position of HR1688 in the sky:

Finder chart HR1688 star
Simplified finder chart for HR1688.

Visibility of HR1688 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR1688 is circumpolar and transits at 11:56 UTC (altitude: 82.1°)

Digitized Sky Survey image of HR1688

The image below is a photograph of HR1688 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 HR1688 is 0.012 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 HR1688 star
DSS2 image of HR1688. The red arrow shows the motion of HR1688 during the next 10000 years (2.00 arcmin in Right Ascension and -2.33 arcmin in declination);

Distance of HR1688 from the Sun and relative movement

HR1688 is distant 307.26 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

94.25 pc
307.26 ly
3 km/s
0.012 arcsec/year
-0.014 arcsec/year

Spectral properties of HR1688

HR1688 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR1688 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR1688. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1688