HSC 627

0.48 UTI

0.27

C_N

1.0

C_dens

0.62

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 27

Stellar density (N₅₀/rad) 7.4 [N/pc²]

C3 classification AC

C_N 0.27 Poorly populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 627 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a close^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~0.95 kpc) differs significantly from the median photometric distance (~1.68 kpc).

Relatively close Moderate extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as primordial binary cluster 102 along with CWNU_1243.

Palma et al. (2025)
Classified as optical pair P511, along with Theia_48.

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for HSC 627 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	310.483	39.643	1.051	-1.579	-3.117	-14.154
Hunt & Reffert	2024	310.502	39.67	1.068	-1.533	-3.114	-15.123
Cavallo et al.	2024	310.459	39.665	1.041	–	–	–
Hunt & Reffert	2023	310.502	39.67	1.068	-1.533	-3.114	-15.123

💡 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–	1.68	2.8	1.76	8	-0.230	104	–	–
Liu et al.	2025	3.06	0.94	–	8	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	104⁽¹⁾	–	–
Cavallo et al.	2024	1.68	2.85	–	14	-0.230	–	–	–
Hunt & Reffert	2023	0.94	2.80	1.76	8	–	–	–	–

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

Visualization

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