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🌎 Location: Greenwich, United Kingdom [change]

κ1 Sagittarii (kappa1 Sagittarii)

κ1 Sagittarii is a multiple hypergiant star in the constellation of Sagittarius.

κ1 Sagittarii visual magnitude is 5.59. Because of its reltive faintness, κ1 Sagittarii 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 κ1 Sagittarii:

5.59
Hypergiant
κ1 Sagittarii (kappa1 Sagittarii) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of κ1 Sagittarii

κ1 Sagittarii is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of κ1 Sagittarii are provided in the following table:

20h 22m 27s
-42° 02’ 58”
358.75°
-34.13°
Sagittarius

The simplified sky map below shows the position of κ1 Sagittarii in the sky:

Finder chart κ1 Sagittarii (kappa1 Sagittarii) star
Simplified finder chart for κ1 Sagittarii (kappa1 Sagittarii).

Visibility of κ1 Sagittarii from your location

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

κ1 Sagittarii (kappa1 Sagittarii) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of κ1 Sagittarii

The image below is a photograph of κ1 Sagittarii 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 κ1 Sagittarii is 0.036 arcsec per year in Right Ascension and -0.09 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of κ1 Sagittarii (kappa1 Sagittarii) star
DSS2 image of κ1 Sagittarii. The red arrow shows the motion of κ1 Sagittarii during the next 10000 years (6.00 arcmin in Right Ascension and -15.00 arcmin in declination);

Distance of κ1 Sagittarii from the Sun and relative movement

κ1 Sagittarii is distant 244.19 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

74.91 pc
244.19 ly
-12 km/s
0.036 arcsec/year
-0.09 arcsec/year

Spectral properties of κ1 Sagittarii

κ1 Sagittarii belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

1.22
A0V
10125K

The red dot in the diagram below shows where κ1 Sagittarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of κ1 Sagittarii. Attribution: Richard Powell / CC BY-SA

κ1 Sagittarii star system properties

κ1 Sagittarii is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the κ1 Sagittarii double sysyem:

5.59
11.59
6
52 arcsec

Alternative designations of κ1 Sagittarii

κ1 Sagittarii
(kappa1 Sagittarii)
SAO230177
SAO230177