HSC 2034

0.19 UTI

0.0

C_N

0.18

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DB

Number of members (P>50%) 20

Radius (P>50% members) 2.4 [arcmin]

C_N 0.0 Sparse
C_dens 0.18 Very loose
C_C3 0.25 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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HSC 2034 is a sparse, very loose object of low 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, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~6.78 kpc) differs significantly from the median photometric distance (~4.95 kpc).

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

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant Moderate extinction Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 2034 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	–	122.148	-36.227	0.148	-1.78	2.977	–
Hu & Soubiran	2025	122.161	-36.248	–	–	–	–
Hunt & Reffert	2024	122.159	-36.225	0.136	-1.777	2.965	–
Cavallo et al.	2024	122.161	-36.248	0.142	–	–	–
Hunt & Reffert	2023	122.159	-36.225	0.136	-1.777	2.965	–

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.070*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	278*	–	–
Cavallo et al.	2024	3.98	1.83	–	1950	-0.590	–	–	–
Hunt & Reffert	2023	5.91	2.32	1.64	319	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 2944	100.0	122.16	-36.23	0.15	-1.79	2.99	–	0.09

💡 Note: The % column shows the percentage of members that HSC 2034 shares with each listed object.

Visualization

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