Turner 4
0.08
UTI
0.0
CN
0.02
Cdens
0.12
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
19
Core radius and density
4.7 [pc], 0.1 [pc-2]
- CN 0.0 Sparse
- Cdens 0.02 Very loose
- CC3 0.12 Very low quality
- Clit 0.13 Rarely 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
Turner 4 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate* distance, below the mid-plane, affected by low extinction. It is catalogued as a very young cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 8 years.
(*): The parallax distance estimate (~3.46 kpc) differs significantly from the median photometric distance (~2.33 kpc).
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 | 274.255 | -18.658 | 0.289 | -1.279 | -2.087 | â |
| Dias et al. | 2018 | â | â | â | -0.2 | -1.64 | â |
| Loktin & Popova | 2017 | 274.26 | -18.721 | â | 4.429 | -2.053 | â |
| Sampedro et al. | 2017 | 274.283 | -18.7 | â | 0.18 | -1.18 | â |
| Dias et al. | 2014 | 274.283 | -18.7 | â | 0.44 | -1.08 | â |
| Morales et al. | 2013 | 274.283 | -18.7 | â | â | â | â |
| Dias et al. | 2002 | 274.283 | -18.7 | â | 0.44 | -1.08 | 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 | 2.33 | 0.97 | â | 10 | â | â | â | â |
| Loktin & Popova | 2017 | 1.00 | 0.97 | â | 513 | â | â | â | â |
| Morales et al. | 2013 | 2.33 | â | â | 10 | â | â | â | â |
| Dias et al. | 2002 | 2.33 | â | â | 10 | â | â | â | â |
Bica et al. (2019)
Asterisms and cluster alikes by B. Alessi reported in DAML02.
Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.