HSC 2686

0.17 UTI

0.0

C_N

0.03

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 15

Core radius and density 3.8 [pc], 0.2 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.75 High quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

HSC 2686 is a sparse, very loose object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very distant Very high extinction Massive Near-solar metallicity Very young

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.49 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.49 (50th percentile).

Data

🔍 Search references for HSC 2686 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	229.212	-58.374	0.161	-5.07	-3.514	–
Hunt & Reffert	2024	229.171	-58.374	0.155	-5.093	-3.526	-56.427
Cavallo et al.	2024	229.197	-58.338	0.155	–	–	–
Hunt & Reffert	2023	229.171	-58.374	0.155	-5.093	-3.526	-56.427

💡 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]	B_frac	BSS
UCC	99999–	6.12	6.18	2.15	11	0.480	1332	–	–
Hunt & Reffert	2024	6.12	6.18	2.15	11	–	1332⁽¹⁾	–	–
Cavallo et al.	2024	4.79	5.47	–	6	0.480	–	–	–
Hunt & Reffert	2023	6.12	6.18	2.15	11	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

ℹ️

1 2