Mamajek 3
0.37
UTI
0.41
CN
0.24
Cdens
0.75
CC3
0.23
Clit
1.0
Cdup
Nm (P>50%)
41
Core radius and density
1.6 [pc], 1.2 [pc-2]
- CN 0.41 Poorly populated
- Cdens 0.24 Very loose
- CC3 0.75 High quality
- Clit 0.23 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
Mamajek 3 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 80.508 | 6.866 | 9.995 | 9.665 | -32.288 | 17.901 |
| Liu et al. | 2025 | 81.55 | 6.74 | 10.05 | 9.71 | -32.74 | 16.11 |
| Swiggum et al. | 2024 | 81.552 | 6.736 | 10.052 | 9.714 | -32.736 | 16.923 |
| Cavallo et al. | 2024 | 80.888 | 7.107 | 10.018 | â | â | â |
| Hunt & Reffert | 2023 | 81.552 | 6.736 | 10.052 | 9.714 | -32.736 | 16.108 |
| Joshi et al. | 2016 | 81.502 | 6.33 | â | â | â | â |
| Dias et al. | 2014 | 81.796 | 6.267 | â | 0.55 | -2.75 | â |
| Gozha et al. | 2012 | 81.796 | 6.267 | â | â | â | â |
| Kharchenko et al. | 2007 | 81.79 | 6.27 | â | 2.08 | â | â |
| Dias et al. | 2002 | 81.796 | 6.267 | â | 8.4 | -32.3 | 18.0 |
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 | 0.1 | 0.1 | 0.31 | 20 | 0.360 | 15 | â | â |
| Liu et al. | 2025 | 0.11 | 0.07 | â | 25 | â | â | â | â |
| Swiggum et al. | 2024 | 0.10 | â | â | 17 | â | 15 | â | â |
| Cavallo et al. | 2024 | 0.09 | 0.38 | â | 28 | 0.360 | â | â | â |
| Hunt & Reffert | 2023 | 0.10 | 0.10 | 0.31 | 17 | â | â | â | â |
| Joshi et al. | 2016 | 0.10 | 0.00 | â | 32 | â | â | â | â |
| Gozha et al. | 2012 | 0.09 | â | â | 20 | â | â | â | â |
| Dias et al. | 2002 | 0.09 | 0.19 | â | 20 | â | â | â | â |
Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 272 along with HSC_1580, and of multiple system 56 along with HSC_1566 and HSC_1580.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010).