HSC 2639

0.44 UTI

0.76

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

0.8

C_dup

N₅₀ (P>50% members) 128

Stellar density (N₅₀/rad) 7.2 [N/pc²]

C3 classification AA

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 0.8 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 2639 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, very young cluster (see Parameters). It was recently reported in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

Distant High extinction Massive Metal-rich Very young

Cavallo et al. (2024)
Bronze sample.

Data

🔍 Search references for HSC 2639 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–	213.026	-62.036	0.241	-6.05	-2.369	-39.078
Hunt & Reffert	2024	213.062	-62.041	0.241	-6.042	-2.357	-47.287
Cavallo et al.	2024	212.892	-62.047	0.242	–	–	–
Hunt & Reffert	2023	213.062	-62.041	0.241	-6.042	-2.357	-47.287

💡 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–	3.785	4.515	2.89	14	0.770	4867	–	–
Hunt & Reffert	2024	–	–	–	–	–	4867⁽¹⁾	–	–
Cavallo et al.	2024	3.84	4.40	–	14	0.770	–	–	–
Hunt & Reffert	2023	3.73	4.63	2.89	15	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0607	19.5	213.03	-62.02	0.2	-6.05	-2.37	–	0.26

💡 Note: The % column shows the percentage of members that HSC 2639 shares with each listed object.

Visualization

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