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: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Taurus » 

99 Tauri

Altitude: 61.2°   Azimuth: 158.8°   Direction: South-South-East

99 Tauri is a multiple giant star in the constellation of Taurus.

99 Tauri visual magnitude is 5.79. Because of its reltive faintness, 99 Tauri 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 99 Tauri:


99 Tauri is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 61.2°
Azimuth: 158.8°
Direction: South-South-East

Celestial coordinates and finder chart of 99 Tauri

99 Tauri 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 99 Tauri are provided in the following table:

04h 57m 48s
+23° 56’ 54”

The simplified sky map below shows the position of 99 Tauri in the sky:

Finder chart 99 Tauri star
Simplified finder chart for 99 Tauri.

Visibility of 99 Tauri 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 99 Tauri 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: 66.1°
Max altitude: 62.5°
Azimuth: 293.9°
99 Tauri is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 99 Tauri

The image below is a photograph of 99 Tauri 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 99 Tauri is 0.008 arcsec per year in Right Ascension and -0.007 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of 99 Tauri star
DSS2 image of 99 Tauri. The red arrow shows the motion of 99 Tauri during the next 100000 years (13.33 arcmin in Right Ascension and -11.67 arcmin in declination);

Distance of 99 Tauri from the Sun and relative movement

99 Tauri is distant 471.10 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

144.51 pc
471.10 ly
4 km/s
0.008 arcsec/year
-0.007 arcsec/year

Spectral properties of 99 Tauri

99 Tauri belongs to spectral class G8


The red dot in the diagram below shows where 99 Tauri is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 99 Tauri. Attribution: Richard Powell / CC BY-SA

99 Tauri star system properties

99 Tauri 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 99 Tauri double sysyem:

103.5 arcsec

Alternative designations of 99 Tauri