Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:59  
clear_day Transit: 12:48  
SunsetSet: 18:36 south
sunny DaytimeWhat's Visible Now
All Constellations » Cetus » 


Altitude: -27.2°   Azimuth: 287.0°   Direction: West-North-West

HR492 is a double main-sequence star in the constellation of Cetus.

HR492 visual magnitude is 5.75. Because of its reltive faintness, HR492 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 HR492:


HR492 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -27.2°
Azimuth: 287.0°
Direction: West-North-West

Celestial coordinates and finder chart of HR492

HR492 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 HR492 are provided in the following table:

01h 41m 44s
-11° 19’ 28”

The simplified sky map below shows the position of HR492 in the sky:

Finder chart HR492 star
Simplified finder chart for HR492.

Visibility of HR492 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 HR492 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: 101.3°
Max altitude: 27.2°
Azimuth: 258.7°

Digitized Sky Survey image of HR492

The image below is a photograph of HR492 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 HR492 is 0.043 arcsec per year in Right Ascension and -0.412 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR492 star
DSS2 image of HR492. The red arrow shows the motion of HR492 during the next 1000 years (0.72 arcmin in Right Ascension and -6.87 arcmin in declination);

Distance of HR492 from the Sun and relative movement

HR492 is distant 121.51 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

37.27 pc
121.51 ly
-10 km/s
0.043 arcsec/year
-0.412 arcsec/year

Spectral properties of HR492

HR492 belongs to spectral class F5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR492 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR492. Attribution: Richard Powell / CC BY-SA

HR492 star system properties

HR492 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR492 double sysyem:

1.8 arcsec

Alternative designations of HR492