HR499

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:

Color of HR499 ⬤

Magnitude of HR499 6.21

Class Main-sequence

VISIBILITY RIGHT NOW 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:

Right Ascension J2000 01h 44m 17s

Declination J2000 +57° 32’ 11”

Galactic Longitude 130°

Galactic Latitude -4.61°

Constellation Cassiopeia

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

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.

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.

Distance (parsec) 79.18 pc

Distance (light year) 258.12 ly

Heliocentric radial velocity 5 km/s

Proper Motion RA 0.039 arcsec/year

Proper Motion Dec -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.

Absolute magnitude 1.72

Spectral Type A3V

Color Index (B-V) 0.1

Temperature of HR499 9028K

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

Main star magnitude 6.21

Secondary star magnitude 7.61

Magnitude difference 1.4

Separation 1.2 arcsec

Alternative designations of HR499

Henry Draper Catalogue HD10543

SAO Catalogue SAO22566

Hipparcos Catalogue HIP8115

Durchmusterung Catalogue BD+56 330

Aitken Double Star Catalogue ADS1359

In Evidence

Other stars in Cassiopeia