IC 1805
(MWSC 209)
- CN 0.79 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
Overview
IC 1805 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is very well-studied in the literature. Note: This object shares a small percentage of members with 2 later reported entries. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 38.197 | 61.47 | 0.455 | -0.729 | -0.717 | -38.438 |
| Almeida et al. | 2025 | 38.255 | 61.484 | – | – | – | – |
| Hunt & Reffert | 2024 | 38.194 | 61.47 | 0.449 | -0.716 | -0.591 | -9.639 |
| Celli et al. | 2024 | 38.21 | 61.471 | – | – | – | – |
| Cavallo et al. | 2024 | 38.303 | 61.565 | 0.456 | – | – | – |
| Hunt & Reffert | 2023 | 38.194 | 61.47 | 0.449 | -0.716 | -0.591 | -9.639 |
| Just et al. | 2023 | 38.17 | 61.453 | – | – | – | – |
| Jaehnig et al. | 2021 | 38.211 | 61.494 | 0.48 | -0.751 | -0.446 | – |
| Rain et al. | 2021 | 38.21 | 61.471 | 0.449 | -0.702 | -0.669 | – |
| Dias et al. | 2021 | 38.255 | 61.484 | 0.445 | -0.704 | -0.71 | – |
| Cantat-Gaudin et al. | 2020 | 38.21 | 61.471 | 0.449 | -0.702 | -0.669 | – |
| Dias et al. | 2019 | 38.208 | 61.638 | 0.449 | -0.702 | -0.669 | -40.93 |
| Soubiran et al. | 2018 | 38.21 | 61.471 | – | – | – | -42.39 |
| Cantat-Gaudin et al. | 2018 | 38.21 | 61.471 | 0.449 | -0.702 | -0.669 | – |
| Loktin & Popova | 2017 | 38.175 | 61.451 | – | -1.613 | -2.383 | -48.5 |
| Kharchenko et al. | 2016 | 38.17 | 61.453 | – | – | – | – |
| Kharchenko et al. | 2013 | 38.182 | 61.455 | – | -1.4 | -2.23 | -48.5 |
| Kharchenko et al. | 2012 | 38.182 | 61.455 | – | -1.65 | -2.11 | -48.5 |
| Piskunov et al. | 2008 | 38.157 | 61.444 | – | – | – | – |
| Kharchenko et al. | 2007 | 38.17 | 61.45 | – | 0.22 | – | -47.88 |
| Piskunov et al. | 2007 | 38.157 | 61.444 | – | – | – | – |
| Kharchenko et al. | 2005 | 38.17 | 61.45 | – | -1.34 | -1.15 | -47.64 |
| Kharchenko et al. | 2003 | 38.17 | 61.47 | – | -1.36 | -0.12 | – |
| Chen et al. | 2003 | 38.19 | 61.535 | – | -1.1 | -1.92 | -26.0 |
| Dias et al. | 2002 | 38.175 | 61.45 | – | -2.1 | -1.57 | -45.0 |
| Dambis | 1999 | 38.175 | 61.45 | – | – | – | – |
💡 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 |
|---|---|---|---|---|---|---|---|---|---|
| Almeida et al. | 2025 | 2.19 | 2.33 | – | 7 | – | 814 | – | – |
| Hunt & Reffert | 2024 | – | – | – | – | – | 1637* | – | – |
| Celli et al. | 2024 | – | – | – | 8 | – | 891 | – | – |
| Cavallo et al. | 2024 | 1.65 | 2.41 | – | 9 | -0.060 | – | – | – |
| Hunt & Reffert | 2023 | 2.02 | 2.40 | 2.46 | 4 | – | – | – | – |
| Just et al. | 2023 | – | – | – | 18 | – | 546 | – | – |
| Jaehnig et al. | 2021 | 2.08* | – | – | – | – | – | – | – |
| Rain et al. | 2021 | 2.09 | 2.70 | – | 3 | – | – | – | 0 |
| Dias et al. | 2021 | 2.19 | 2.33 | – | 7 | 0.310 | – | – | – |
| Cantat-Gaudin et al. | 2020 | 1.97 | 2.22 | – | 8 | – | – | – | – |
| Dias et al. | 2019 | 2.16 | 2.26 | – | 8 | 0.223 | – | – | – |
| Soubiran et al. | 2018 | 2.09 | – | – | – | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 2.09 | – | – | – | – | – | – | – |
| Loktin & Popova | 2017 | 1.86 | 2.52 | – | 7 | – | – | – | – |
| Kharchenko et al. | 2016 | 1.70 | 2.48 | – | 18 | – | – | – | – |
| Kharchenko et al. | 2013 | 1.70 | 2.48 | – | 18 | – | – | – | – |
| Kharchenko et al. | 2012 | 1.70 | 2.48 | – | 18 | – | – | – | – |
| Piskunov et al. | 2008 | 1.89 | 2.02 | – | 5 | – | 1016* | – | – |
| Piskunov et al. | 2007 | 1.89 | 2.02 | – | 5 | – | 161 | – | – |
| Kharchenko et al. | 2005 | 1.89 | 2.02 | – | 5 | – | – | – | – |
| Kharchenko et al. | 2003 | 1.89 | 2.20 | – | – | – | – | – | – |
| Chen et al. | 2003 | 1.89 | – | – | 0 | – | – | – | – |
| Dias et al. | 2002 | 2.34 | 2.70 | – | 3 | – | – | – | – |
| Dambis | 1999 | 1.93 | 2.40 | – | 3 | – | – | – | – |
💡 Note: The parameters are sometimes
transformed from their original values to match the format of the
columns shown here, see FAQ.
The columns DAv, Bfr, BSS correspond to differential
extinction, binary fraction, and blue stragglers, respectively.
BSS values can be listed as fractions or integers.
(*): indicates that this parameter is
assigned more than one value in the corresponding reference.
