NGC 2220
(ESO 255 04; MWSC 841)
0.29
UTI
0.31
CN
0.12
Cdens
0.38
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
49.5 [arcmin]
- CN 0.31 Poorly populated
- Cdens 0.12 Very loose
- CC3 0.38 Low quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
NGC 2220 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a close* distance, below the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.
(*): The parallax distance estimate (~0.51 kpc) differs significantly from the median photometric distance (~1.17 kpc).
Relatively close
Low extinction
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 95.397 | -44.716 | 1.972 | -7.017 | 9.6 | 20.664 |
| Hunt & Reffert | 2023 | 95.229 | -44.745 | 1.985 | -6.916 | 9.592 | 13.167 |
| Bica et al. | 2019 | 95.279 | -44.7 | â | â | â | â |
| Loktin & Popova | 2017 | 95.22 | -44.7 | â | 1.05 | 6.11 | 5.28 |
| Dias et al. | 2014 | 95.146 | -44.678 | â | 1.05 | 6.11 | 5.28 |
| Dias et al. | 2002 | 95.146 | -44.678 | â | 1.05 | 6.11 | 5.28 |
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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2023 | 0.48 | 0.15 | 0.39 | 1009 | â | â | â | â |
| Loktin & Popova | 2017 | 2.21 | 0.78 | â | 2239 | â | â | â | â |
| Dias et al. | 2002 | 1.17 | 0.19 | â | 3020 | â | â | â | â |
Hunt & Reffert (2024)
Classified as a moving group.
Cantat-Gaudin et al. (2020)
Described as poor and scattered; flagged as non-existent in the Revised NGC. Included in some catalogues but generally regarded as a remnant candidate. More details in Appendix A of the article.