ι Serpentis (iota Serpentis)

Above the horizon. Rise: 14:49 | Tran: 22:33 | Set: 6:21

Alt: 5.70° Az: 65.44° Direction: South-West

ι Serpentis is a multiple main-sequence star of spectral class A1 in the constellation of Serpens.

ι Serpentis visual magnitude is 4.52. Because of its moderate brightness, ι Serpentis is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of ι Serpentis (iota Serpentis) star

DSS2 image of ι Serpentis. The red arrow shows the motion of ι Serpentis during the next 10000 years (-9.50 arcmin in Right Ascension and -7.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 42m 41s

Declination +19° 35’ 24”

Hour Angle 16h 55m 27s

Sidereal Time 08h 38m 09s

J2000

Right Ascension 15h 41m 33s

Declination +19° 40’ 13”

Galactic Coordinates

Galactic Longitude 31.42°

Galactic Latitude 50.45°

Finder Chart

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Finder chart for ι Serpentis (iota Serpentis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.52

Class Main-sequence

Absolute magnitude 0.67

Spectral Type A1V

Color Index (B-V) 0.04

Temperature 9652K

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

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

Star System Properties

ι Serpentis 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 ι Serpentis double sysyem:

Main star magnitude 4.52

Secondary star magnitude 4.62

Magnitude difference 0.1

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

ι Serpentis is distant 192.10 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

Distance (parsec) 58.93

Distance (light year) 192.10

Radial Speed -17 km/s

Proper Motion RA -0.057 arcsec/y

Proper Motion Dec -0.046"/y

Alternative Designations

Bayer designation ι Serpentis
(iota Serpentis)

Flamsteed designation 21 Serpentis

Henry Draper Catalogue HD140159

SAO Catalogue SAO101682

Hipparcos Catalogue HIP76852

Durchmusterung Catalogue BD+20 3138

Aitken Double Star Catalogue ADS9744

Visibility from Your Location

Today's ι Serpentis (iota Serpentis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.4° RISE 14:49

Max altitude: 58.1° TRANSIT 22:33

Azimuth: 289.6° SET 6:21

Set Location

Other stars in Serpens