HSC 869

0.32 UTI

0.0

C_N

1.0

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 18.2 [N/pc²]

C3 classification AC

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 869 is a sparse, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a 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.

(*): The parallax distance estimate (~1.17 kpc) differs significantly from the median photometric distance (~2.13 kpc).

Relatively close Moderate extinction Metal-poor Young

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for HSC 869 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–	345.185	61.323	0.855	-3.065	-2.952	–
Hunt & Reffert	2024	345.175	61.313	0.858	-3.08	-2.978	–
Cavallo et al.	2024	345.181	61.324	0.877	–	–	–
Hunt & Reffert	2023	345.175	61.313	0.858	-3.08	-2.978	–

💡 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–	2.135	2.95	1.47	74	-0.880	141	–	–
Hunt & Reffert	2024	–	–	–	–	–	141⁽¹⁾	–	–
Cavallo et al.	2024	3.15	2.62	–	145	-0.880	–	–	–
Hunt & Reffert	2023	1.12	3.28	1.47	4	–	–	–	–

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

Visualization

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