NGC 6401

Short description: Globular cluster in the constellation Ophiuchus

NGC 6401

The NASA/ESA Hubble Space Telescope has used its powerful optics to separate the globular cluster NGC 6401 into its constituent stars. What was once only visible as a ghostly mist in the eyepieces of astronomical instruments has been transformed into a stellar landscape.

Observation data (J2000 epoch)
Constellation| Ophiuchus
Right ascension|  17h 38m 36.93s
Declination| −23° 54′ 31.5″
Distance| 24.450
Apparent magnitude (V)| 7.40
Apparent dimensions (V)| 4.8'
Physical characteristics
Other designations| ESO 520-SC011, GCL 73, H I-44, h 1982, h 3697, GC 4314
See also: Globular cluster, List of globular clusters

NGC 6401 is a globular cluster in the constellation Ophiuchus. William Herschel discovered this star cluster in 1784 with his 47 cm telescope, but mistakenly believed it to be a bright nebula. Later his son, John Herschel, was to make the same error because the technology of the day was insufficient to allow the individual stars to be resolved visually.

## External links

* NGC 6401 SEDS.org (Revised NGC)
* NGC 6401 NASA Extragalactic Database
* Enigmatic cluster targeted by Hubble

Coordinates:  17h 38m 36.93s, −23° 54′ 31.5″

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Astronomical catalogs

NGC|

* Astronomy:NGC 6396
* Astronomy:NGC 6397
* Astronomy:NGC 6398
* Astronomy:NGC 6399
* Astronomy:NGC 6400
* NGC 6401
* Astronomy:NGC 6402
* Astronomy:NGC 6403
* Astronomy:NGC 6404
* Astronomy:NGC 6405
* Astronomy:NGC 6406

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Original source: https://en.wikipedia.org/wiki/NGC 6401. Read more

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