Collinder 184
(VDBH 30; NGC 2587; MWSC 1482; OCL 706; vdBergh-Hagen 30; ESO 431 07; FoF 591)
0.91
UTI
0.79
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
Stellar density (N50/rad)
7.0 [N/pc2]
- CN 0.79 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
π₯ Members
π Colab
π¬ Bayestar19
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
Overview
Collinder 184 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low 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 is very well-studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999β | 125.859 | -29.501 | 0.309 | -4.219 | 3.618 | 54.452 |
| Li et al. | 2025 | 125.861 | -29.503 | 0.295 | -4.248 | 3.586 | β |
| Hu & Soubiran | 2025 | 125.852 | -29.489 | β | β | β | β |
| Almeida et al. | 2025 | 125.837 | -29.498 | β | β | β | β |
| Hunt & Reffert | 2024 | 125.864 | -29.504 | 0.311 | -4.194 | 3.601 | 57.353 |
| Cavallo et al. | 2024 | 125.852 | -29.489 | 0.309 | β | β | β |
| Hunt & Reffert | 2023 | 125.864 | -29.504 | 0.311 | -4.194 | 3.601 | 57.353 |
| Almeida et al. | 2023 | 125.839 | -29.502 | β | β | β | β |
| Just et al. | 2023 | 125.852 | -29.491 | β | β | β | β |
| Dias et al. | 2021 | 125.837 | -29.498 | 0.303 | -4.259 | 3.58 | 68.734 |
| Cantat-Gaudin et al. | 2020 | 125.861 | -29.503 | 0.295 | -4.248 | 3.586 | β |
| SΓ‘nchez et al. | 2020 | 125.854 | -29.508 | β | -4.138 | 3.633 | β |
| Cantat-Gaudin & Anders | 2020 | 125.861 | -29.503 | 0.295 | -4.248 | 3.586 | β |
| Liu & Pang | 2019 | 125.876 | -29.502 | 0.297 | -4.217 | 3.605 | β |
| Soubiran et al. | 2018 | 125.861 | -29.503 | β | β | β | 48.72 |
| Bica et al. | 2019 | 125.852 | -29.475 | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 125.861 | -29.503 | 0.295 | -4.248 | 3.586 | β |
| Kharchenko et al. | 2016 | 125.852 | -29.491 | β | β | β | β |
| Dias et al. | 2014 | 125.854 | -29.508 | β | -0.93 | 2.04 | β |
| Kharchenko et al. | 2013 | 125.857 | -29.493 | β | -2.16 | 3.7 | β |
| Dias et al. | 2002 | 125.854 | -29.508 | β | -4.3 | -2.5 | β |
π‘ 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 | 99999β | 2.79 | 0.31 | 0.66 | 501 | -0.186 | 678 | 0.47 | β |
| Li et al. | 2025 | 2.80 | 0.29 | β | 658 | -0.052 | β | β | β |
| Hu & Soubiran | 2025 | β | β | β | β | -0.250(5) | β | β | β |
| Almeida et al. | 2025 | 2.79 | 0.64 | β | 367 | β | 707 | β | β |
| Hunt & Reffert | 2024 | β | β | β | β | β | 614(1) | β | β |
| Cavallo et al. | 2024 | 2.29 | 0.66 | β | 603 | -0.520 | β | β | β |
| Hunt & Reffert | 2023 | 2.80 | 0.18 | 0.66 | 679 | β | β | β | β |
| Almeida et al. | 2023 | 2.75 | 0.22 | β | 678 | -0.006 | 649(1) | 0.47 | β |
| Just et al. | 2023 | β | β | β | 501 | β | 1191 | β | β |
| Dias et al. | 2021 | 2.79 | 0.64 | β | 367 | -0.122 | β | β | β |
| Cantat-Gaudin et al. | 2020 | 3.21 | 0.45 | β | 316 | β | β | β | β |
| Cantat-Gaudin & Anders | 2020 | 3.09 | β | β | β | β | β | β | β |
| Liu & Pang | 2019 | β | β | β | 2000 | -2.000 | β | β | β |
| Soubiran et al. | 2018 | 3.09 | β | β | β | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 3.09 | β | β | β | β | β | β | β |
| Kharchenko et al. | 2016 | 2.70 | 0.31 | β | 501 | β | β | β | β |
| Kharchenko et al. | 2013 | 2.70 | 0.31 | β | 501 | β | β | β | β |
| Dias et al. | 2002 | 2.70 | 0.31 | β | 501 | β | β | β | β |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit.
Cavallo et al. (2024)
Gold sample.