HSC 79

0.24 UTI

0.0

C_N

1.0

C_dens

0.25

C_C3

0.0

C_lit

0.96

C_dup

N₅₀ (P>50% members) 22

Stellar density (N₅₀/rad) 10.3 [N/pc²]

C3 classification DB

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 0.96 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

HSC 79 is a sparse, very dense object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a very metal-poor, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It was recently reported in the literature.

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

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.96) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Very metal-poor Young

Cavallo et al. (2024)
Bronze sample.

Data

🔍 Search references for HSC 79 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	270.06	-24.291	0.478	0.092	-1.179	92.364
Hunt & Reffert	2024	270.068	-24.288	0.476	0.078	-1.168	92.365
Cavallo et al.	2024	270.122	-24.308	0.475	–	–	–
Hunt & Reffert	2023	270.068	-24.288	0.476	0.078	-1.168	92.365

💡 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–	2.425	2.715	2.1	74	-1.260	332	–	–
Hunt & Reffert	2024	–	–	–	–	–	332⁽¹⁾	–	–
Cavallo et al.	2024	2.91	2.88	–	141	-1.260	–	–	–
Hunt & Reffert	2023	1.94	2.55	2.10	7	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 4102	76.0	270.06	-24.29	0.47	0.09	-1.15	37.84	0.07
Ryu 596	4.0	270.22	-24.23	0.39	0.06	-1.42	25.14	0.22

💡 Note: The % column shows the percentage of members that HSC 79 shares with each listed object.

Visualization

ℹ️

1 2