NGC 6204
(MWSC 2457; FoF 1186)
0.95
UTI
1.0
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
Radius (P>50% members)
6.4 [arcmin]
- CN 1.0 Very rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
Overview
NGC 6204 is a very rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.
Relatively close
Moderate 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 | β | 251.542 | -47.024 | 0.811 | -0.711 | -0.615 | 4.736 |
| Li et al. | 2025 | 251.538 | -47.027 | 0.805 | -0.69 | -0.596 | β |
| Wei et al. | 2025 | 251.537 | -47.023 | 0.834 | -0.737 | -0.609 | β |
| Almeida et al. | 2025 | 251.534 | -47.027 | β | β | β | β |
| Hunt & Reffert | 2024 | 251.536 | -47.026 | 0.826 | -0.71 | -0.614 | 9.26 |
| Cavallo et al. | 2024 | 251.538 | -47.015 | 0.829 | β | β | β |
| Hunt & Reffert | 2023 | 251.536 | -47.026 | 0.826 | -0.71 | -0.614 | 9.26 |
| Almeida et al. | 2023 | 251.527 | -47.029 | β | β | β | β |
| Just et al. | 2023 | 251.524 | -47.02 | β | β | β | β |
| He et al. | 2022 | 251.538 | -47.024 | 0.831 | -0.736 | -0.619 | β |
| Tarricq et al. | 2022 | 251.545 | -47.028 | 0.834 | -0.719 | -0.628 | β |
| Jaehnig et al. | 2021 | 251.538 | -47.028 | 0.837 | -0.717 | -0.571 | β |
| Rain et al. | 2021 | 251.538 | -47.027 | 0.805 | -0.69 | -0.596 | β |
| Dias et al. | 2021 | 251.534 | -47.027 | 0.809 | -0.687 | -0.57 | β |
| Cantat-Gaudin et al. | 2020 | 251.538 | -47.027 | 0.805 | -0.69 | -0.596 | β |
| SΓ‘nchez et al. | 2020 | 251.537 | -47.017 | β | -0.802 | -0.687 | β |
| Cantat-Gaudin & Anders | 2020 | 251.538 | -47.027 | 0.805 | -0.69 | -0.596 | β |
| Liu & Pang | 2019 | 251.535 | -47.025 | 0.826 | -0.682 | -0.588 | β |
| Bossini et al. | 2019 | 251.538 | -47.027 | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 251.538 | -47.027 | 0.805 | -0.69 | -0.596 | β |
| Loktin & Popova | 2017 | 251.535 | -47.018 | β | -3.326 | -5.501 | -34.9 |
| Kharchenko et al. | 2016 | 251.524 | -47.02 | β | β | β | β |
| Dias et al. | 2014 | 251.538 | -47.017 | β | -1.58 | -0.04 | β |
| Kharchenko et al. | 2013 | 251.535 | -47.02 | β | -2.8 | -1.41 | -34.9 |
| Gozha et al. | 2012 | 251.537 | -47.017 | β | β | β | β |
| Piskunov et al. | 2008 | 251.518 | -47.018 | β | β | β | β |
| Kharchenko et al. | 2007 | 251.53 | -47.02 | β | 0.08 | β | β |
| van den Bergh | 2006 | 251.533 | -47.012 | β | β | β | β |
| Kharchenko et al. | 2005 | 251.53 | -47.02 | β | 0.04 | -1.45 | β |
| Kharchenko et al. | 2003 | 251.62 | -47.02 | β | -1.04 | -3.06 | β |
| Chen et al. | 2003 | 251.643 | -47.025 | β | -0.02 | -0.01 | -53.0 |
| Dias et al. | 2002 | 251.537 | -47.017 | β | -1.61 | -0.05 | 53.0 |
| Dambis | 1999 | 251.533 | -47.012 | β | β | β | 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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Li et al. | 2025 | 1.17 | 1.24 | β | 189 | 0.246 | β | β | β |
| Wei et al. | 2025 | 1.91 | 1.72 | β | 135 | -0.250 | 798 | 0.45 | β |
| Almeida et al. | 2025 | 1.14 | 1.50 | β | 115 | β | 753 | β | β |
| Hunt & Reffert | 2024 | β | β | β | β | β | 1294* | β | β |
| Cavallo et al. | 2024 | 1.10 | 1.87 | β | 55 | -0.310 | β | β | β |
| Hunt & Reffert | 2023 | 1.13 | 1.41 | 1.50 | 80 | β | β | β | β |
| Almeida et al. | 2023 | 1.13 | 1.52 | β | 103 | 0.070 | 628* | 0.55 | β |
| Just et al. | 2023 | β | β | β | 100 | β | 53 | β | β |
| He et al. | 2022 | β | 1.70 | β | 40 | β | β | β | β |
| Tarricq et al. | 2022 | 1.20 | β | β | 115 | β | β | β | β |
| Jaehnig et al. | 2021 | 1.19* | β | β | β | β | β | β | β |
| Rain et al. | 2021 | 1.20 | 1.27 | β | 37 | β | β | β | 0 |
| Dias et al. | 2021 | 1.14 | 1.50 | β | 115 | 0.096 | β | β | β |
| Cantat-Gaudin et al. | 2020 | 1.24 | 1.13 | β | 93 | β | β | β | β |
| Cantat-Gaudin & Anders | 2020 | 1.20 | β | β | β | β | β | β | β |
| Liu & Pang | 2019 | β | β | β | 135 | -0.250 | β | β | β |
| Bossini et al. | 2019 | 1.26 | 1.29 | β | 38 | 0.020 | β | β | β |
| Cantat-Gaudin et al. | 2018 | 1.20 | β | β | β | β | β | β | β |
| Loktin & Popova | 2017 | 1.09 | 1.34 | β | 37 | β | β | β | β |
| Kharchenko et al. | 2016 | 1.08 | 1.34 | β | 100 | β | β | β | β |
| Kharchenko et al. | 2013 | 1.08 | 1.34 | β | 100 | -1.053 | β | β | β |
| Gozha et al. | 2012 | 1.20 | β | β | 79 | -0.140 | 29 | β | β |
| Piskunov et al. | 2008 | 1.08 | 1.33 | β | 191 | β | β | β | β |
| van den Bergh | 2006 | 1.08 | 1.33 | β | 36 | β | β | β | β |
| Kharchenko et al. | 2005 | 1.08 | 1.33 | β | 191 | β | β | β | β |
| Kharchenko et al. | 2003 | 1.08 | 1.33 | β | β | β | β | β | β |
| Chen et al. | 2003 | 1.08 | β | β | 30 | β | β | β | β |
| Dias et al. | 2002 | 1.20 | 1.43 | β | 79 | -1.053 | β | β | β |
| Dambis | 1999 | 0.86 | 1.16 | β | 126 | β | β | β | β |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit.
Cavallo et al. (2024)
Gold sample.