HR2640

Altitude: -35.2° Azimuth: 272.8° Direction: West

HR2640 is a main-sequence star in the constellation of Canis Major.

HR2640 visual magnitude is 5.63. Because of its reltive faintness, HR2640 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 HR2640:

Color of HR2640 ⬤

Magnitude of HR2640 5.63

Class Main-sequence

VISIBILITY RIGHT NOW

HR2640 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -35.2°
Azimuth: 272.8°
Direction: West

Celestial coordinates and finder chart of HR2640

HR2640 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 HR2640 are provided in the following table:

Right Ascension J2000 07h 01m 05s

Declination J2000 -25° 12’ 55”

Galactic Longitude 236.62°

Galactic Latitude -9.23°

Constellation Canis Major

The simplified sky map below shows the position of HR2640 in the sky:

Simplified finder chart for HR2640.

Visibility of HR2640 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 HR2640 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 4:00

Max altitude: 13.3° TRANSIT 7:33

Azimuth: 244.8° SET 11:07

Digitized Sky Survey image of HR2640

The image below is a photograph of HR2640 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 HR2640 is -0.008 arcsec per year in Right Ascension and 0.021 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR2640. The red arrow shows the motion of HR2640 during the next 10000 years (-1.33 arcmin in Right Ascension and 3.50 arcmin in declination);

Distance of HR2640 from the Sun and relative movement

HR2640 is distant 1,028.39 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 315.46 pc

Distance (light year) 1,028.39 ly

Heliocentric radial velocity 6 km/s

Proper Motion RA -0.008 arcsec/year

Proper Motion Dec 0.021 arcsec/year

Spectral properties of HR2640

HR2640 belongs to spectral class B2 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -1.86

Spectral Type B2V

Color Index (B-V) -0.17

Temperature of HR2640 12902K

The red dot in the diagram below shows where HR2640 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2640. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2640

Henry Draper Catalogue HD52670

SAO Catalogue SAO172763

Hipparcos Catalogue HIP33804

Durchmusterung Catalogue CD-25 3911

Support us

In Evidence

Other stars in Canis Major