HR1904

HR1904 is a hypergiant star in the constellation of Auriga.

HR1904 visual magnitude is 6.33. Because of its reltive faintness, HR1904 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 HR1904:

Color of HR1904 ⬤

Magnitude of HR1904 6.33

Class Hypergiant

VISIBILITY RIGHT NOW HR1904 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR1904

HR1904 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 HR1904 are provided in the following table:

Right Ascension J2000 05h 37m 45s

Declination J2000 +33° 33’ 33”

Galactic Longitude 175.19°

Galactic Latitude 1.02°

Constellation Auriga

The simplified sky map below shows the position of HR1904 in the sky:

Simplified finder chart for HR1904.

Visibility of HR1904 from your location

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

Today's HR1904 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 56.4° RISE 7:59

Max altitude: 72.1° TRANSIT 17:41

Azimuth: 303.6° SET 3:28

RIGHT NOW HR1904 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1904

The image below is a photograph of HR1904 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 HR1904 is 0.003 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR1904. The red arrow shows the motion of HR1904 during the next 100000 years (5.00 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of HR1904 from the Sun and relative movement

HR1904 is distant 498.47 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

Distance (parsec) 152.91 pc

Distance (light year) 498.47 ly

Heliocentric radial velocity 29 km/s

Proper Motion RA 0.003 arcsec/year

Spectral properties of HR1904

HR1904 belongs to spectral class K0

Absolute magnitude 0.41

Spectral Type K0

Color Index (B-V) 1.31

Temperature of HR1904 4104K

The red dot in the diagram below shows where HR1904 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1904. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1904

Henry Draper Catalogue HD37138

SAO Catalogue SAO58263

Hipparcos Catalogue HIP26463

Durchmusterung Catalogue BD+33 1102

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In Evidence

Other stars in Auriga