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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:04  
clear_day Transit: 12:47  
SunsetSet: 18:30 south
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All Constellations » Microscopium » 

θ1 Microscopii (theta1 Microscopii)

Altitude: -63.0°   Azimuth: 81.2°   Direction: East

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

θ1 Microscopii visual magnitude is 4.82. Because of its moderate brightness, θ1 Microscopii should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about θ1 Microscopii:


θ1 Microscopii (theta1 Microscopii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -63.0°
Azimuth: 81.2°
Direction: East

Celestial coordinates and finder chart of θ1 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”

The simplified sky map below shows the position of θ1 Microscopii in the sky:

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

Visibility of θ1 Microscopii from your location

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

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

Digitized Sky Survey image of θ1 Microscopii

The image below is a photograph of θ1 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 θ1 Microscopii is 0.069 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

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);

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

Spectral properties of θ1 Microscopii

θ1 Microscopii belongs to spectral class A 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

Alternative designations of θ1 Microscopii

θ1 Microscopii
(theta1 Microscopii)