Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

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:

5.93
Hypergiant
HR135 is above the horizon from Greenwich, United Kingdom [change]. 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:

00h 33m 10s
+54° 53’ 42”
120.28°
-7.88°
Cassiopeia

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

Finder chart HR135 star
Simplified finder chart for HR135.

Visibility of HR135 from your location

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

HR135 is circumpolar and transits at 15:23 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.

Image of HR135 star
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.

115.21 pc
375.58 ly
-35 km/s
0.071 arcsec/year
-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.

0.62
K0III
4649K

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

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

Alternative designations of HR135

SAO21512
SAO21512