HSC 438

0.25 UTI

0.45

C_N

0.36

C_dens

0.38

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 45

Core radius and density 1.7 [pc], 1.8 [pc^-2]

C3 classification BC

C_N 0.45 Poorly populated
C_dens 0.36 Loose
C_C3 0.38 Low 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 438 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by very high extinction. It is catalogued as a massive, 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.

Distant Very high extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.57 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.57 (50th percentile).

Data

🔍 Search references for HSC 438 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	290.491	19.252	0.184	-1.292	-4.676	0.757
Hunt & Reffert	2024	290.488	19.269	0.169	-1.279	-4.663	30.158
Cavallo et al.	2024	290.485	19.266	0.169	–	–	–
Hunt & Reffert	2023	290.488	19.269	0.169	-1.279	-4.663	30.158

💡 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–	4.53	5.36	2.21	580	0.160	2355	–	–
Hunt & Reffert	2024	4.53	5.36	2.21	580	–	2355⁽¹⁾	–	–
Cavallo et al.	2024	5.89	5.21	–	195	0.160	–	–	–
Hunt & Reffert	2023	4.53	5.36	2.21	581	–	–	–	–

(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 3412	100.0	290.49	19.26	0.18	-1.3	-4.7	0.76	0.07

💡 Note: The % column shows the percentage of members that HSC 438 shares with each listed object.

Visualization

ℹ️

1 2