IOTA (ι) CANCRI
CONTRAST MULTIPLE STAR
Right Ascension:
8h 46m 41s
Best Seen:
1/15 - 5/15
Declination:
28º 45' 36"
Combined
Magnitude:
3.93
Computer File:
iotacnc
Constellation:
Cancer
Apparent
Separation:
30.4"
Actual
Compared to Sun
Distance
298 / 188 l.y
--
Actual Brightness
--
161 / 6.1
Magnitude
4.03 / 6.58
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Mass
--
--
Surface Gravity
--
--
Surface Composition (by mass)
74% hydrogen 24% helium 2% everything else
same
Spectral Type
G8 Iab: / A3V
G2 V
Density (gram/cubic cm)
--
--
WHAT TO LOOK FOR THROUGH THE TELESCOPE:
-
Recommended eyepiece: 24mm or 40 mm.
-
When people look through the telescope they should see two stars next to each other. The brighter star should appear yellow and the dimmer star blue.
IOTA CANCRI INFORMATION:
-
The stars are far apart from each other, some 2800 times the distance from the Earth to the Sun.
-
A planet near the brighter star would see the fainter star shining as bright as the full Moon does in our sky. A planet near the fainter star would see the brighter star as 10 times as bright as the full Moon.
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With such a large separation, the stars may get ripped away from each other by chance gravitational encounters with passing stars.
Item
Updated
Notes
Coordinates
07-24-2002
SIMBAD
Combined Magnitude
07-24-2002
with Scott’s The Flamsteed Collection
Apparent Separation
07-24-2002
http://www.astronomical.org/constellations/cnc.html
Distance
07-24-2002
SIMBAD
Actual Brightness
Magnitude
Mass
Surface Gravity
Surface Composition
01-06-2003
OK for all stars
Spectral Type
07-24-2002
SIMBAD