HSC 2157

0.26 UTI

0.25

C_N

0.37

C_dens

0.62

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 25

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

C3 classification CA

C_N 0.25 Poorly populated
C_dens 0.37 Loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

HSC 2157 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Very distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.52 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.52 (50th percentile).

Data

🔍 Search references for HSC 2157 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	132.595	-47.46	0.19	-3.592	3.924	61.3
Hunt & Reffert	2024	132.584	-47.457	0.189	-3.616	3.931	61.401
Cavallo et al.	2024	132.587	-47.467	0.188	–	–	–
Hunt & Reffert	2023	132.584	-47.457	0.189	-3.616	3.931	61.401

💡 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–	5.83	2.67	1.02	185	0.420	236	–	–
Hunt & Reffert	2024	5.83	2.67	1.02	185	–	236⁽¹⁾	–	–
Cavallo et al.	2024	5.45	2.82	–	135	0.420	–	–	–
Hunt & Reffert	2023	5.83	2.67	1.02	185	–	–	–	–

(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 3372	100.0	132.58	-47.46	0.19	-3.58	3.92	60.51	0.21

💡 Note: The % column shows the percentage of members that HSC 2157 shares with each listed object.

Visualization

ℹ️

1 2