HSC 1629

0.08 UTI

0.37

C_N

1.0

C_dens

0.25

C_C3

0.25

C_lit

0.19

C_dup

N₅₀ (P>50% members) 37

Stellar density (N₅₀/rad) 6.5 [N/pc²]

C3 classification CC

C_N 0.37 Poorly populated
C_dens 1.0 Very dense
C_C3 0.25 Low quality
C_lit 0.25 Poorly studied
C_dup 0.19 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

HSC 1629 is a poorly populated, very dense object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as primordial binary cluster 124 along with Collinder_106, and as primordial binary cluster 125 along with Collinder_107, and as primordial binary cluster 281 along with NGC_2244, and of multiple system 42 along with NGC_2244, Collinder_106 and Collinder_107.

Palma et al. (2025)
Part of multiple system G20, along with Desvoivres_2, NGC_2244, Collinder_107 and Collinder_106.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1629 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	98.999	5.506	0.645	-1.217	0.564	71.11
Liu et al.	2025	99.02	5.51	0.65	-1.21	0.58	71.12
Hunt & Reffert	2024	99.019	5.515	0.65	-1.205	0.583	71.121
Cavallo et al.	2024	98.936	5.456	0.65	–	–	–
Hunt & Reffert	2023	99.019	5.515	0.65	-1.205	0.583	71.121

💡 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–	1.46	0.68	1.08	21	0.140	146	–	–
Liu et al.	2025	2.14	0.33	–	17	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	146⁽¹⁾	–	–
Cavallo et al.	2024	1.46	1.06	–	21	0.140	–	–	–
Hunt & Reffert	2023	1.41	0.68	1.08	29	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 13379	81.1	99.01	5.52	0.65	-1.15	0.52	71.11	0.34

💡 Note: The % column shows the percentage of members that HSC 1629 shares with each listed object.

Visualization

ℹ️

1 2