NGC 1252
0.19
UTI
0.25
CN
0.52
Cdens
0.0
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
25
Core radius and density
0.6 [pc], 2.6 [pc-2]
- CN 0.25 Poorly populated
- Cdens 0.52 Moderately dense
- CC3 0.0 Very low quality
- Clit 0.1 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
NGC 1252 is a poorly populated, moderately dense object of very low C3 quality. Its parallax locates it at a close distance, well below the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 9 years.
Note: This object contains blue stragglers according to at least one source.
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 | 47.747 | -57.776 | 1.28 | 1.594 | 5.479 | 22.271 |
| Loktin & Popova | 2017 | 47.7 | -57.767 | â | 5.522 | -1.31 | 12.3 |
| Joshi et al. | 2016 | 47.7 | -57.76 | â | â | â | â |
| Ahumada & Lapasset | 2007 | 47.7 | -57.767 | â | â | â | â |
| van den Bergh | 2006 | 47.704 | -57.767 | â | â | â | â |
| Lynga | 1987 | 47.626 | -58.143 | 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 | 0.72 | 0.06 | â | 3020 | â | â | â | 1 |
| Loktin & Popova | 2017 | 0.80 | 2.09 | â | 168 | â | â | â | â |
| Joshi et al. | 2016 | 0.94 | 0.00 | â | 3162 | â | â | â | â |
| Ahumada & Lapasset | 2007 | â | 0.06 | â | 3020 | â | â | â | 1 |
| van den Bergh | 2006 | 0.64 | 0.06 | â | 3020 | â | â | â | â |
| Lynga | 1987 | 0.47 | 0.00 | â | 5012 | â | â | â | â |
Cantat-Gaudin & Anders (2020)
Long debated object; multiple studies disagree on its reality. Gaia DR2 and spectroscopic data show no coherent kinematic group. Currently considered an asterism or non-physical object. More details in Appendix A of the article.
Ahumada & Lapasset (2007)
Adopted cluster centre: star 10 in ref. (1983PASP...95..474B). Star 4=HD 20286 (sp. B9.5V) is a cluster member according to the same reference, where the cluster is given an age of 0.5 Gyr.