HR135

HR135 is a hypergiant star in the constellation of Cassiopeia.

HR135 visual magnitude is 5.93. Because of its reltive faintness, HR135 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 HR135:

Color of HR135 ⬤

Magnitude of HR135 5.93

Class Hypergiant

VISIBILITY RIGHT NOW HR135 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 19°.

Celestial coordinates and finder chart of HR135

HR135 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 HR135 are provided in the following table:

Right Ascension J2000 00h 33m 10s

Declination J2000 +54° 53’ 42”

Galactic Longitude 120.28°

Galactic Latitude -7.88°

Constellation Cassiopeia

The simplified sky map below shows the position of HR135 in the sky:

Simplified finder chart for HR135.

Visibility of HR135 from your location

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

HR135 is circumpolar and transits at 07:51 UTC (altitude: 86.6°)

Digitized Sky Survey image of HR135

The image below is a photograph of HR135 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 HR135 is 0.071 arcsec per year in Right Ascension and -0.042 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR135. The red arrow shows the motion of HR135 during the next 10000 years (11.83 arcmin in Right Ascension and -7.00 arcmin in declination);

Distance of HR135 from the Sun and relative movement

HR135 is distant 375.58 light years from the Sun and it is moving towards the Sun at the speed of 35 kilometers per second.

Distance (parsec) 115.21 pc

Distance (light year) 375.58 ly

Heliocentric radial velocity -35 km/s

Proper Motion RA 0.071 arcsec/year

Proper Motion Dec -0.042 arcsec/year

Spectral properties of HR135

HR135 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.62

Spectral Type K0III

Color Index (B-V) 1.04

Temperature of HR135 4649K

The red dot in the diagram below shows where HR135 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR135. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR135

Henry Draper Catalogue HD2952

SAO Catalogue SAO21512

Hipparcos Catalogue HIP2611

Durchmusterung Catalogue BD+54 101

In Evidence

Other stars in Cassiopeia