Bochum 9
(MWSC 1825)
- CN 0.0 Sparse
- Cdens 0.03 Very loose
- CC3 0.12 Very low quality
- Clit 0.44 Poorly studied
- Cdup 1.0 Unique
Overview
(*): The parallax distance estimate (~4.81 kpc) differs significantly from the median photometric distance (~0.82 kpc).
⚠️ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 158.872 | -60.15 | 0.208 | -5.421 | 2.569 | -0.826 |
| Just et al. | 2023 | 158.92 | -60.126 | – | – | – | – |
| Kharchenko et al. | 2016 | 158.92 | -60.126 | – | – | – | – |
| Kharchenko et al. | 2013 | 158.925 | -60.13 | – | -10.2 | -0.23 | – |
| Piskunov et al. | 2008 | 158.934 | -60.115 | – | – | – | – |
| Kharchenko et al. | 2005 | 158.94 | -60.12 | – | -10.46 | 1.34 | – |
| Kharchenko et al. | 2003 | 158.95 | -60.12 | – | -8.98 | 0.36 | – |
| Dias et al. | 2002 | 158.942 | -60.117 | – | -6.38 | -2.51 | -9.82 |
💡 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 |
|---|---|---|---|---|---|---|---|---|---|
| Just et al. | 2023 | – | – | – | 123 | – | 28 | – | – |
| Kharchenko et al. | 2016 | 0.94 | 0.34 | – | 123 | – | – | – | – |
| Kharchenko et al. | 2013 | 0.94 | 0.34 | – | 123 | – | – | – | – |
| Piskunov et al. | 2008 | 0.71 | 0.34 | – | 240 | – | – | – | – |
| Kharchenko et al. | 2005 | 0.71 | 0.34 | – | 240 | – | – | – | – |
| Kharchenko et al. | 2003 | 4.60 | 1.95 | – | – | – | – | – | – |
| Dias et al. | 2002 | 0.71 | 0.34 | – | 240 | – | – | – | – |
💡 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.
