HSC 638
0.27
UTI
0.32
CN
0.15
Cdens
0.38
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
21.5 [arcmin]
- CN 0.32 Poorly populated
- Cdens 0.15 Very loose
- CC3 0.38 Low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
HSC 638 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
Relatively close
High extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 310.422 | 41.707 | 0.968 | 2.528 | -2.582 | -11.22 |
| Zhang et al. | 2024 | 310.356 | 41.665 | â | â | â | â |
| Hunt & Reffert | 2024 | 310.357 | 41.665 | 0.979 | 2.499 | -2.567 | -19.113 |
| Cavallo et al. | 2024 | 310.346 | 41.792 | 0.971 | â | â | â |
| Hunt & Reffert | 2023 | 310.357 | 41.665 | 0.979 | 2.499 | -2.567 | -19.113 |
đĄ Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.035* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 54* | â | â |
| Cavallo et al. | 2024 | 1.05 | 3.25 | â | 105 | -0.360 | â | â | â |
| Hunt & Reffert | 2023 | 1.00 | 3.11 | 1.91 | 136 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.