σ1 Cancri (sigma1 Cancri)

Above the horizon. Rise: 6:25 | Tran: 15:53 | Set: 1:25

Alt: 63.84° Az: 127.41° Direction: South-West

σ1 Cancri is a multiple main-sequence star of spectral class A8 in the constellation of Cancer.

σ1 Cancri visual magnitude is 5.66. Because of its faintness, σ1 Cancri is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of σ1 Cancri. The red arrow shows the motion of σ1 Cancri during the next 10000 years (-0.50 arcmin in Right Ascension and 2.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 08h 54m 08s

Declination +32° 22’ 36”

Hour Angle 22h 22m 01s

Sidereal Time 07h 16m 09s

J2000

Right Ascension 08h 52m 34s

Declination +32° 28’ 27”

Galactic Coordinates

Galactic Longitude 191.64°

Galactic Latitude 38.57°

Finder Chart

Loading map...

Finder chart for σ1 Cancri (sigma1 Cancri).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.66

Class Main-sequence

Absolute magnitude 1.68

Spectral Type A8V

Color Index (B-V) 0.22

Temperature 8011K

The red dot in the diagram below shows where σ1 Cancri is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of σ1 Cancri. Attribution: Richard Powell / CC BY-SA

Star System Properties

σ1 Cancri is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the σ1 Cancri double sysyem:

Main star magnitude 5.66

Secondary star magnitude 10.06

Magnitude difference 4.4

Separation 79 arcsec

Distance, Radial Speed, Proper Motion

σ1 Cancri is distant 203.62 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

Distance (parsec) 62.46

Distance (light year) 203.62

Radial Speed -14 km/s

Proper Motion RA -0.003 arcsec/y

Proper Motion Dec 0.016"/y

Alternative Designations

Bayer designation σ1 Cancri
(sigma1 Cancri)

Flamsteed designation 51 Cancri

Henry Draper Catalogue HD75698

SAO Catalogue SAO61102

Hipparcos Catalogue HIP43584

Durchmusterung Catalogue BD+33 1770

Aitken Double Star Catalogue ADS7057

Visibility from Your Location

Today's σ1 Cancri (sigma1 Cancri) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 57.6° RISE 6:25

Max altitude: 70.9° TRANSIT 15:53

Azimuth: 302.4° SET 1:25

Set Location

Other stars in Cancer