NGC 5749 | |
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Observation data ( J2000 epoch) | |
Right ascension | 14h 48m 49.(0)s [1] |
Declination | −54° 30′ 0(7)″ [2] |
Distance | 3,548 ly (1,087.9 pc) [1] |
Apparent magnitude (V) | 11.23 |
Apparent dimensions (V) | 16.7 ′ [1] |
Physical characteristics | |
Mass | 20.8+24.0 −11.2 M☉ [3] M☉ |
Radius | 11.7 ± 2.9 ly (3.6 ± 0.9 pc) [3] (tidal) |
Estimated age | 27.0 Myr [4] |
Other designations | NGC 5749, Cr 287, ESO 176-SC 004 [5] |
Associations | |
Constellation | Lupus |
NGC 5749 is an open cluster of stars positioned near the southwest border of the southern constellation of Lupus. It is located at a distance of 3,548 light years from the Sun. [1] This is a poorly populated cluster that shows a low level of concentration; [6] the Trumpler class is IV1p. [7] There are 112 stars brighter than magnitude 14.4 within an angular radius of ~15′ of the cluster center, but only about 30% of these are members. [7] NGC 5749 is 27 [4] million years old with a tidal radius of 11.7 light years and a mass of ~21 M☉. [3] Polarization measurements suggest there is a dust cloud within the cluster. [1]