HR7499

HR7499 is a double main-sequence star in the constellation of Cygnus.

HR7499 visual magnitude is 6.23. Because of its reltive faintness, HR7499 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 HR7499:

Color of HR7499 ⬤

Magnitude of HR7499 6.23

Class Main-sequence

VISIBILITY RIGHT NOW HR7499 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 78°.

Celestial coordinates and finder chart of HR7499

HR7499 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 HR7499 are provided in the following table:

Right Ascension J2000 19h 41m 57s

Declination J2000 +40° 15’ 14”

Galactic Longitude 74.1°

Galactic Latitude 8.4°

Constellation Cygnus

The simplified sky map below shows the position of HR7499 in the sky:

Simplified finder chart for HR7499.

Visibility of HR7499 from your location

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

HR7499 is circumpolar and transits at 03:04 UTC (altitude: 78.8°)

Digitized Sky Survey image of HR7499

The image below is a photograph of HR7499 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 HR7499 is -0.025 arcsec per year in Right Ascension and 0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7499. The red arrow shows the motion of HR7499 during the next 10000 years (-4.17 arcmin in Right Ascension and 4.33 arcmin in declination);

Distance of HR7499 from the Sun and relative movement

HR7499 is distant 271.67 light years from the Sun and it is moving towards the Sun at the speed of 32 kilometers per second.

Distance (parsec) 83.33 pc

Distance (light year) 271.67 ly

Heliocentric radial velocity -32 km/s

Proper Motion RA -0.025 arcsec/year

Proper Motion Dec 0.026 arcsec/year

Spectral properties of HR7499

HR7499 belongs to spectral class A6 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 1.63

Spectral Type A6V

Color Index (B-V) 0.18

Temperature of HR7499 8321K

The red dot in the diagram below shows where HR7499 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7499. Attribution: Richard Powell / CC BY-SA

HR7499 star system properties

HR7499 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR7499 double sysyem:

Main star magnitude 6.23

Secondary star magnitude 7.53

Magnitude difference 1.3

Separation 0.2 arcsec

Alternative designations of HR7499

Henry Draper Catalogue HD186307

SAO Catalogue SAO48737

Hipparcos Catalogue HIP96907

Durchmusterung Catalogue BD+39 3878

In Evidence

Other stars in Cygnus