Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

Tianyi - 7 Draconis

Tianyi, also designated as 7 Draconis , is a giant star in the constellation of Draco.

Tianyi visual magnitude is 5.43. Because of its reltive faintness, Tianyi 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 Tianyi:

5.43
Giant
Tianyi - 7 Draconis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 47°.

Celestial coordinates and finder chart of Tianyi

Tianyi is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Tianyi are provided in the following table:

12h 47m 34s
+66° 47’ 25”
123.53°
50.33°
Draco

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

Finder chart Tianyi - 7 Draconis star
Simplified finder chart for Tianyi - 7 Draconis.

Visibility of Tianyi from your location

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

Tianyi - 7 Draconis is circumpolar and transits at 03:39 UTC (altitude: 74.7°)

Digitized Sky Survey image of Tianyi

The image below is a photograph of Tianyi 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 Tianyi is 0.01 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Tianyi - 7 Draconis star
DSS2 image of Tianyi. The red arrow shows the motion of Tianyi during the next 10000 years (1.67 arcmin in Right Ascension and -0.83 arcmin in declination);

Distance of Tianyi from the Sun and relative movement

Tianyi is distant 778.04 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

238.66 pc
778.04 ly
8 km/s
0.01 arcsec/year
-0.005 arcsec/year

Spectral properties of Tianyi

Tianyi belongs to spectral class K5

-1.46
K5
3705K

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

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

Alternative designations of Tianyi

Tianyi
SAO15902
SAO15902