HR2704

Altitude: -52.8° Azimuth: 301.5° Direction: West-North-West

HR2704 is a variable and double sub-giant star in the constellation of Canis Major.

HR2704 visual magnitude is 5.69. Because of its reltive faintness, HR2704 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 HR2704:

Color of HR2704 ⬤

Magnitude of HR2704 5.69

Class Sub-giant

VISIBILITY RIGHT NOW

HR2704 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -52.8°
Azimuth: 301.5°
Direction: West-North-West

Celestial coordinates and finder chart of HR2704

HR2704 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2704 are provided in the following table:

Right Ascension J2000 07h 09m 42s

Declination J2000 -25° 13’ 51”

Galactic Longitude 237.5°

Galactic Latitude -7.48°

Constellation Canis Major

The simplified sky map below shows the position of HR2704 in the sky:

Simplified finder chart for HR2704.

Visibility of HR2704 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 HR2704 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: 115.2° RISE 4:12

Max altitude: 13.3° TRANSIT 7:46

Azimuth: 244.8° SET 11:20

Digitized Sky Survey image of HR2704

The image below is a photograph of HR2704 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 HR2704 is -0.012 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR2704. The red arrow shows the motion of HR2704 during the next 10000 years (-2.00 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR2704 from the Sun and relative movement

HR2704 is distant 1,831.46 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

Distance (parsec) 561.80 pc

Distance (light year) 1,831.46 ly

Heliocentric radial velocity 27 km/s

Proper Motion RA -0.012 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR2704

HR2704 belongs to spectral class B2 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -3.06

Spectral Type B2IV

Color Index (B-V) -0.16

Temperature of HR2704 12692K

The red dot in the diagram below shows where HR2704 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2704. Attribution: Richard Powell / CC BY-SA

HR2704 star system properties

HR2704 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 HR2704 double sysyem:

Main star magnitude 5.69

Secondary star magnitude 12.59

Magnitude difference 6.9

Separation 9.2 arcsec

Alternative designations of HR2704

Henry Draper Catalogue HD54912

SAO Catalogue SAO173101

Hipparcos Catalogue HIP34579

Durchmusterung Catalogue CD-25 4120

General Catalogue of Variable Stars Var?

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In Evidence

Other stars in Canis Major