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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: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cetus » 


Altitude: -50.4°   Azimuth: 331.9°   Direction: North-North-West

HR9090 is a variable star in the constellation of Cetus.

HR9090 visual magnitude is 7.1. Because of its reltive faintness, HR9090 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 HR9090:


HR9090 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -50.4°
Azimuth: 331.9°
Direction: North-North-West

Celestial coordinates and finder chart of HR9090

HR9090 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 HR9090 are provided in the following table:

00h 02m 07s
-14° 40’ 33”

The simplified sky map below shows the position of HR9090 in the sky:

Finder chart HR9090 star
Simplified finder chart for HR9090.

Visibility of HR9090 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 HR9090 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: 104.7°
Max altitude: 23.8°
Azimuth: 255.3°

Digitized Sky Survey image of HR9090

The image below is a photograph of HR9090 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 HR9090 is -0.01 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR9090 star
DSS2 image of HR9090. The red arrow shows the motion of HR9090 during the next 10000 years (-1.67 arcmin in Right Ascension and -3.17 arcmin in declination);

Spectral properties of HR9090

HR9090 belongs to spectral class S7


Alternative designations of HR9090