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Gamma (γ) Leonis
Multiple Star System
| Right Ascension | 10h 19m 58s | Best Seen | 2/15 - 6/1 |
| Declination | 19° 50' 27" | Combined Magnitude | 2.01 |
| Apparent Separation | 4.50" | Constellation | Leo |
Actual |
Compared to Sun |
|
| Distance | 126 ly | -- |
| Separation | 16 billion miles | 170 au |
| Orbital Period | 600 - 700 years | -- |
| Actual Brightness | -- | 118 / 41 |
| Magnitude | 2.49 / 3.64 | -- |
| Mass | -- | -- |
| Surface Gravity | -- | -- |
| Surface Composition (by mass) | 74% hydrogen 24% helium 2% everything else |
same |
| Spectral Type | K1 IIIb / G7 III | G2 V |
| Density (gram/cubic cm) | -- | -- |
What To Look For Through The Telescope
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Recommended eyepiece: 24mm or 40 mm.
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When people look through the telescope they should see two stars next to each other. One star should be slightly brighter than the other.
Gamma Leonis Information:
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Both of these stars are yellow.
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The name of this object is “Algieba,” which means the Lion’s mane.
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References
| Item | Updated | Notes |
| Coordinates | 2002-08-30 | just “tweaked” a bit |
| Combined Magnitude | 2002-08-30 | OK w/ Scott’s The Flamsteed Collection |
| Apparent Separation | 2002-08-30 | with http://www.astronomical.org/constellations/leo.html |
| Distance | 2002-08-30 | OK w/ Flamsteed AND Hipparcos |
| Separation | 2002-08-30 | previous: 12 billion miles, 125 Earth/Sun – BUT found this site with this number: http://www.astronomy.org.nz/journal/2000/2000_may/LEO%20the%20LION.htm |
| Orbital Period | 2002-08-30 | OK, see separation: http://www.astronomy.org.nz/journal/2000/2000_may/LEO%20the%20LION.htm |
| Actual Brightness | 2002-08-30 | OK w/ Flamsteed |
| Magnitude | 2002-08-30 | OK w/ Flamsteed |
| Mass | -- | |
| Surface Gravity | -- | |
| Surface Composition | 2003-01-06 | OK for all stars |
| Spectral Type | 2002-08-30 | changed to match SIMBAD |
| Density | -- | |
| Other | 2002-08-30 | Item 2: http://www.seds.org/Maps/Stars_en/Fig/leo.html |