Messier 35
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| The open star cluster Messier 35 . The denser, but weaker and 5 × more distant cluster NGC 2158 can also be seen at the bottom right . SDSS recording, angle of view 54 '× 54' |
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| AladinLite | |
| Constellation | Twins |
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Position equinox : J2000.0 |
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| Right ascension | 06 h 09 m 05 s |
| declination | + 24 ° 20 ′ 19 ″ |
| Appearance
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| classification | III, 3, r (Trumpler), e (Shapley) |
| Brightness (visual) | 5.1 mag |
| Brightness (B-band) | 5.31 mag |
| Angular expansion | 28 ' |
| Number of stars | 513 |
| Physical data
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| Redshift | (-24 ± 16) · 10 -6 |
| Radial velocity | (−7 ± 5) km / s |
| distance | 2800 ly (850 pc ) |
| diameter | 24 ly |
| Age | 100 million years |
| history | |
| Discovered by |
J.-P. de Chéseaux , 1745/1746 J. Bevis , before 1750 |
| Catalog names | |
| M 35 • NGC 2168 • C 0605-243 • OCl 466 • Mel 41 • Cr 82 • Lund 207 • | |
Messier 35 (also known as NGC 2168 ) is a close and very bright open star cluster in the constellation Gemini , near the summer point. With an angular extent of 28 arc minutes and an apparent magnitude of 5.1 like he can already in particularly clear skies freiäugig be recognized. He stands at the foot of the right twin (stars μ, η and 1 Gem).
Recognizable in binoculars as a delicate cloud of stars , M35 shows at 30x magnification in a small telescope how clearly it stands out from its surroundings. The brightest stars are reddish, three form a striking triangle. Experienced observers can see over 200 stars in a 20 cm mirror telescope.
An attractive contrast in size and star density is shown to the cluster NGC 2158 , which is only 0.4 ° southwest and therefore in the same field of view. NGC 2158 is five times farther away, but has at least 10 times more stars and is much older.
Web links
- High-resolution image of M35 and NGC 2158 with semi-professional optics
- Open Star Clusters M35 and NGC 2158 - Astronomy Picture of the Day from November 29, 2002 (English).
- Spektrum.de : Amateur recording [1]
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e f Messier 35 at SEDS
- ↑ a b c SIMBAD
- ↑ Bernd Koch, Stefan Korth: The Messier objects. The 110 classic destinations for sky watchers. Kosmos-Verlag, 213p., ISBN 9783440117439 , Stuttgart 2010
