VDBH 197
(van den Bergh-Hagen 197; BH 197; vdBergh-Hagen 197; MWSC 2458)
0.20
UTI
0.0
CN
0.11
Cdens
0.38
CC3
0.26
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
2.4 [pc], 0.6 [pc-2]
- CN 0.0 Sparse
- Cdens 0.11 Very loose
- CC3 0.38 Low quality
- Clit 0.26 Poorly 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
VDBH 197 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.
â ī¸ 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 | 99999â | 251.576 | -45.877 | 0.339 | -3.436 | -4.626 | -48.56 |
| Just et al. | 2023 | 251.614 | -45.849 | â | â | â | â |
| Sampedro et al. | 2017 | 251.625 | -45.86 | â | 0.95 | -3.01 | â |
| Kharchenko et al. | 2016 | 251.614 | -45.849 | â | â | â | â |
| Dias et al. | 2014 | 251.625 | -45.86 | â | 2.09 | -2.0 | â |
| Kharchenko et al. | 2013 | 251.625 | -45.85 | â | -5.53 | -1.88 | â |
| Morales et al. | 2013 | 251.625 | -45.86 | â | â | â | â |
| Bukowiecki et al. | 2011 | 251.646 | -45.843 | â | â | â | â |
| Dias et al. | 2002 | 251.625 | -45.86 | â | 1.63 | -2.3 | â |
| Lynga | 1987 | 251.719 | -45.822 | â | â | â | â |
| van den Bergh & Hagen | 1975 | 250.8 | -45.733 | â | â | â | 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 | 2.07 | 3.15 | â | 871 | â | 67 | â | â |
| Just et al. | 2023 | â | â | â | 871 | â | 67 | â | â |
| Kharchenko et al. | 2016 | 2.07 | 3.15 | â | 871 | â | â | â | â |
| Kharchenko et al. | 2013 | 2.07 | 3.15 | â | 871 | â | â | â | â |
| Dias et al. | 2002 | 1.63 | 3.28 | â | 32 | â | â | â | â |
Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010).
Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.