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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:38  
clear_day Transit: 11:46  
SunsetSet: 15:54 south
sunny DaytimeWhat's Visible Now?
All Constellations » Crater » 

θ Crateris (theta Crateris)

Altitude: 0.2°   Azimuth: 253.8°   Direction: West-South-West

θ Crateris is a main-sequence star in the constellation of Crater.

θ Crateris visual magnitude is 4.7. Because of its moderate brightness, θ Crateris 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 θ Crateris:


θ Crateris (theta Crateris) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 0.2°
Azimuth: 253.8°
Direction: West-South-West

Celestial coordinates and finder chart of θ Crateris

θ Crateris is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ Crateris are provided in the following table:

11h 36m 40s
-09° 48’ 07”

The simplified sky map below shows the position of θ Crateris in the sky:

Finder chart θ Crateris (theta Crateris) star
Simplified finder chart for θ Crateris (theta Crateris).

Visibility of θ Crateris from your location

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

Today's θ Crateris (theta Crateris) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.8°
Max altitude: 28.7°
Azimuth: 260.2°

Digitized Sky Survey image of θ Crateris

The image below is a photograph of θ Crateris 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 θ Crateris is -0.061 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of θ Crateris (theta Crateris) star
DSS2 image of θ Crateris. The red arrow shows the motion of θ Crateris during the next 10000 years (-10.17 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of θ Crateris from the Sun and relative movement

θ Crateris is distant 304.67 light years from the Sun and it is moving far from the Sun at the speed of 1 kilometers per second.

93.46 pc
304.67 ly
1 km/s
-0.061 arcsec/year
0.008 arcsec/year

Spectral properties of θ Crateris

θ Crateris belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of θ Crateris

θ Crateris
(theta Crateris)
21 Crateris