Alessi 36
0.28
UTI
0.8
CN
1.0
Cdens
1.0
CC3
0.13
Clit
0.46
Cdup
Nm (P>50%)
230
Core radius and density
0.9 [pc], 9.5 [pc-2]
- CN 0.8 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.13 Rarely studied
- Cdup 0.46 Possibly duplicate
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
Alessi 36 is a rich, very dense object of very 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 near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is rarely studied in the literature.
â ī¸ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 106.61 | -37.644 | 3.605 | -9.662 | 7.082 | 15.355 |
| Swiggum et al. | 2024 | 106.565 | -37.596 | 3.598 | -9.669 | 7.046 | 15.57 |
| Hunt & Reffert | 2024 | 106.565 | -37.596 | 3.598 | -9.669 | 7.046 | 14.546 |
| Cavallo et al. | 2024 | 106.763 | -37.723 | 3.601 | â | â | â |
| Hunt & Reffert | 2023 | 106.565 | -37.596 | 3.598 | -9.669 | 7.046 | 14.546 |
| Bica et al. | 2019 | 106.588 | -37.487 | 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 | 0.28 | 0.14 | 0.58 | 29 | -0.030 | 152 | â | â |
| Liu et al. | 2025 | 0.32 | 0.09 | â | 35 | â | â | â | â |
| Swiggum et al. | 2024 | 0.28 | â | â | 29 | â | 204 | â | â |
| Hunt & Reffert | 2024 | 0.28 | 0.14 | 0.58 | 29 | â | 100(1) | â | â |
| Cavallo et al. | 2024 | 0.28 | 0.62 | â | 21 | -0.030 | â | â | â |
| Hunt & Reffert | 2023 | 0.28 | 0.14 | 0.58 | 29 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 22 along with Collinder_135.
Palma et al. (2025)
Part of multiple system G3, along with Collinder_135 and HSC_1949.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Bica et al. (2019)
List of clusters and alike reported by B. Alessi.