OC 0508
0.34
UTI
0.43
CN
0.41
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
43
Core radius and density
1.1 [pc], 2.0 [pc-2]
- CN 0.43 Poorly populated
- Cdens 0.41 Loose
- CC3 0.75 High quality
- Clit 0.06 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
OC 0508 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption, age, and metallicity parameters (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 137.546 | -49.79 | 0.399 | -5.586 | 5.602 | â |
| Hunt & Reffert | 2024 | 137.546 | -49.793 | 0.385 | -5.567 | 5.578 | â |
| Cavallo et al. | 2024 | 137.576 | -49.833 | 0.386 | â | â | â |
| Hunt & Reffert | 2023 | 137.546 | -49.793 | 0.385 | -5.567 | 5.578 | â |
| Hao et al. | 2022 | 137.506 | -49.801 | 0.401 | -5.594 | 5.517 | â |
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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 2.32 | 4.36 | 2.74 | 17 | 0.270 | 756 | â | â |
| Hunt & Reffert | 2024 | 2.32 | 4.36 | 2.74 | 17 | â | 756(1) | â | â |
| Cavallo et al. | 2024 | 2.50 | 4.66 | â | 47 | 0.420 | â | â | â |
| Hunt & Reffert | 2023 | 2.32 | 4.36 | 2.74 | 17 | â | â | â | â |
| Hao et al. | 2022 | â | 1.32 | â | 1 | 0.119 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P36, along with HSC_2204.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.31 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.31 (50th percentile).