Your guide to the Solar System and the night sky
Latest Perseverance Images received 2 hours 24 mins ago for Sol242, Sol240, Sol239, Sol238, Sol237, Sol225, Sol224, Sol219, Sol218, Sol217
Please help keep TheSkyLive ads-free, DONATE NOW via PayPal!. This site cannot run without your voluntary donations.
🌎  Greenwich, United Kingdom [change]

16 Serpentis

16 Serpentis is a hypergiant star in the constellation of Serpens.

16 Serpentis visual magnitude is 5.26. Because of its reltive faintness, 16 Serpentis 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 16 Serpentis:

5.26
Hypergiant
16 Serpentis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 20°.

Celestial coordinates and finder chart of 16 Serpentis

16 Serpentis 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 16 Serpentis are provided in the following table:

15h 36m 29s
+10° 00’ 35”
17.21°
47.57°
Serpens

The simplified sky map below shows the position of 16 Serpentis in the sky:

Finder chart 16 Serpentis star
Simplified finder chart for 16 Serpentis.

Visibility of 16 Serpentis from your location

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

Today's 16 Serpentis rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 80.0°
Max altitude: 48.5°
Azimuth: 280.0°
16 Serpentis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 16 Serpentis

The image below is a photograph of 16 Serpentis 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 16 Serpentis is 0.045 arcsec per year in Right Ascension and -0.129 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 16 Serpentis star
DSS2 image of 16 Serpentis. The red arrow shows the motion of 16 Serpentis during the next 1000 years (0.75 arcmin in Right Ascension and -2.15 arcmin in declination);

Distance of 16 Serpentis from the Sun and relative movement

16 Serpentis is distant 234.70 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

71.99 pc
234.70 ly
8 km/s
0.045 arcsec/year
-0.129 arcsec/year

Spectral properties of 16 Serpentis

16 Serpentis belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

0.97
K0III
4866K

The red dot in the diagram below shows where 16 Serpentis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 16 Serpentis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 16 Serpentis

16 Serpentis
SAO101640
SAO101640