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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:16
wb_twilight   (Astronomical Twilight)   What's Visible Now?

θ1 Microscopii (theta1 Microscopii)

Below the horizon.  Never rises today
Altitude: -21.9°   Azimuth: 128.8°   Direction: South-East

θ1 Microscopii is a variable star of spectral class A in the constellation of Microscopium.

θ1 Microscopii visual magnitude is 4.82. Because of its moderate brightness, θ1 Microscopii is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Celestial coordinates and finder chart of θ1 Microscopii

Finder chart θ1 Microscopii (theta1 Microscopii) star
Simplified finder chart for θ1 Microscopii (theta1 Microscopii).

θ1 Microscopii 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 θ1 Microscopii are provided in the following table:

21h 20m 45s
-40° 48’ 34”
Image of θ1 Microscopii (theta1 Microscopii) star
DSS2 image of θ1 Microscopii. The red arrow shows the motion of θ1 Microscopii during the next 10000 years (11.50 arcmin in Right Ascension and -0.83 arcmin in declination);

Key facts about θ1 Microscopii


θ1 Microscopii is also a CrEuSr chemically peculiar star.


The red dot in the diagram below shows where θ1 Microscopii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of θ1 Microscopii. Attribution: Richard Powell / CC BY-SA

Distance of θ1 Microscopii from the Sun and relative movement

θ1 Microscopii is distant 186.39 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

57.18 pc
186.39 ly
2 km/s
0.069 arcsec/year
-0.005 arcsec/year

Alternative designations of θ1 Microscopii

θ1 Microscopii
(theta1 Microscopii)

Visibility of θ1 Microscopii from your location

θ1 Microscopii (theta1 Microscopii) is currently not visible from Greenwich, United Kingdom