NGC 5749
Open cluster in the constellation Lupus
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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]
| NGC 5749 | |
|---|---|
NGC 5749 with DECaPS | |
| 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 |
