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

θ2 Microscopii (theta2 Microscopii)

θ2 Microscopii is a multiple hypergiant star in the constellation of Microscopium.

θ2 Microscopii visual magnitude is 5.77. Because of its reltive faintness, θ2 Microscopii 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 θ2 Microscopii:

5.77
Hypergiant
θ2 Microscopii (theta2 Microscopii) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of θ2 Microscopii

θ2 Microscopii is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ2 Microscopii are provided in the following table:

21h 24m 24s
-41° 00’ 24”
0.89°
-45.64°
Microscopium

The simplified sky map below shows the position of θ2 Microscopii in the sky:

Finder chart θ2 Microscopii (theta2 Microscopii) star
Simplified finder chart for θ2 Microscopii (theta2 Microscopii).

Visibility of θ2 Microscopii from your location

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

θ2 Microscopii (theta2 Microscopii) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of θ2 Microscopii

The image below is a photograph of θ2 Microscopii 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 θ2 Microscopii is 0.031 arcsec per year in Right Ascension and 0 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of θ2 Microscopii (theta2 Microscopii) star
DSS2 image of θ2 Microscopii. The red arrow shows the motion of θ2 Microscopii during the next 10000 years (5.17 arcmin in Right Ascension and 0.00 arcmin in declination);

Distance of θ2 Microscopii from the Sun and relative movement

θ2 Microscopii is distant 463.07 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

142.05 pc
463.07 ly
11 km/s
0.031 arcsec/year

Spectral properties of θ2 Microscopii

θ2 Microscopii belongs to spectral class A0 and has a luminosity class of III corresponding to a hypergiant star. θ2 Microscopii is also a Si chemically peculiar star.

0.01
A0III
10795K

The red dot in the diagram below shows where θ2 Microscopii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of θ2 Microscopii. Attribution: Richard Powell / CC BY-SA

θ2 Microscopii star system properties

θ2 Microscopii 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 θ2 Microscopii double sysyem:

5.77
6.37
0.6
0.5 arcsec

Alternative designations of θ2 Microscopii

θ2 Microscopii
(theta2 Microscopii)
SAO230667
SAO230667