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: 4:49  
clear_day Transit: 12:56  
SunsetSet: 21:04 south
wb_twilight Astronomical TwilightWhat's Visible Now
All Constellations » Cassiopeia » 


HR499 is a double main-sequence star in the constellation of Cassiopeia.

HR499 visual magnitude is 6.21. Because of its reltive faintness, HR499 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 HR499:

HR499 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 30°.

Celestial coordinates and finder chart of HR499

HR499 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 HR499 are provided in the following table:

01h 44m 17s
+57° 32’ 11”

The simplified sky map below shows the position of HR499 in the sky:

Finder chart HR499 star
Simplified finder chart for HR499.

Visibility of HR499 from your location

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

HR499 is circumpolar and transits at 09:05 UTC (altitude: 83.9°)

Digitized Sky Survey image of HR499

The image below is a photograph of HR499 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 HR499 is 0.039 arcsec per year in Right Ascension and -0.04 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR499 star
DSS2 image of HR499. The red arrow shows the motion of HR499 during the next 10000 years (6.50 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of HR499 from the Sun and relative movement

HR499 is distant 258.12 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

79.18 pc
258.12 ly
5 km/s
0.039 arcsec/year
-0.04 arcsec/year

Spectral properties of HR499

HR499 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR499 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR499. Attribution: Richard Powell / CC BY-SA

HR499 star system properties

HR499 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR499 double sysyem:

1.2 arcsec

Alternative designations of HR499