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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
SunriseRise: 6:08  
clear_day Transit: 12:59  
SunsetSet: 19:51
sunny DaytimeWhat's Visible Now?
All Constellations » Capricornus » 

HR7842

Altitude: 8.5°   Azimuth: 209.3°   Direction: South-South-West

HR7842 is a hypergiant star in the constellation of Capricornus.

HR7842 visual magnitude is 6.36. Because of its reltive faintness, HR7842 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR7842 is 0.01 arcsec per year in Right Ascension and -0.041 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7842 star
DSS2 image of HR7842. The red arrow shows the motion of HR7842 during the next 10000 years (1.67 arcmin in Right Ascension and -6.83 arcmin in declination);

Key facts about HR7842

6.36
Hypergiant

HR7842 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 8.5°
Azimuth: 209.3°
Direction: South-South-West

Celestial coordinates and finder chart of HR7842

HR7842 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 HR7842 are provided in the following table:

20h 32m 52s
-24° 56’ 38”
19.33°
-32.54°
Capricornus

The simplified sky map below shows the position of HR7842 in the sky:

Finder chart HR7842 star
Simplified finder chart for HR7842.

Visibility of HR7842 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 HR7842 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: 114.9°
Max altitude: 13.6°
Azimuth: 245.1°

Distance of HR7842 from the Sun and relative movement

HR7842 is distant 350.16 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

107.41 pc
350.16 ly
-11 km/s
0.01 arcsec/year
-0.041 arcsec/year

Spectral properties of HR7842

HR7842 belongs to spectral class A0

1.20
A0
10252K

The red dot in the diagram below shows where HR7842 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7842. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7842

SAO189416
SAO189416