HSC 2885

0.25 UTI

0.0

C_N

0.38

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 1.5 [pc], 1.9 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.38 Loose
C_C3 0.75 High quality
C_lit 0.06 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 2885 is a sparse, loose object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low 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.

Relatively close Low extinction Metal-poor Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 251 along with Theia_290.

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for HSC 2885 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–	260.229	-38.222	1.133	-1.195	-1.756	-15.693
Hunt & Reffert	2024	260.221	-38.225	1.126	-1.225	-1.748	-13.076
Cavallo et al.	2024	260.251	-38.182	1.129	–	–	–
Hunt & Reffert	2023	260.221	-38.225	1.126	-1.225	-1.748	-13.076

💡 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–	1.015	0.585	0.7	83	-0.930	83	–	–
Liu et al.	2025	1.32	0.32	–	68	–	–	–	–
Hunt & Reffert	2024	0.85	0.70	0.70	83	–	83⁽¹⁾	–	–
Cavallo et al.	2024	1.18	0.47	–	813	-0.930	–	–	–
Hunt & Reffert	2023	0.85	0.70	0.70	83	–	–	–	–

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

Visualization

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