HSC 245

0.08 UTI

0.0

C_N

1.0

C_dens

0.38

C_C3

0.0

C_lit

0.28

C_dup

N₅₀ (P>50% members) 19

Stellar density (N₅₀/rad) 5.7 [N/pc²]

C3 classification CB

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 0.28 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 245 is a sparse, very dense object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by very high extinction. It is catalogued as a very young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

(*): The parallax distance estimate (~2.86 kpc) differs significantly from the median photometric distance (~2.15 kpc).

Relatively close Very high extinction Very young

Palma et al. (2025)
Part of multiple system G156, along with UBC_1033, HSC_250 and HSC_249.

Data

🔍 Search references for HSC 245 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–	279.897	-7.054	0.35	0.006	-1.955	26.091
Hunt & Reffert	2024	279.885	-7.06	0.437	-0.001	-1.923	-6.42
Hunt & Reffert	2023	279.885	-7.06	0.437	-0.001	-1.923	-6.42

💡 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–	2.15	5.15	1.55	7	–	398	–	–
Hunt & Reffert	2024	–	–	–	–	–	398⁽¹⁾	–	–
Hunt & Reffert	2023	2.15	5.15	1.55	7	–	–	–	–

(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 2543	72.0	279.9	-7.04	0.29	0.02	-1.98	28.71	0.65

💡 Note: The % column shows the percentage of members that HSC 245 shares with each listed object.

Visualization

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