HSC 1504

0.04 UTI

0.0

C_N

0.12

C_dens

0.5

C_C3

0.06

C_lit

0.28

C_dup

N_m (P>50%) 21

Core radius and density 1.4 [pc], 0.6 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.12 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.06 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 1504 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (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.

Relatively close Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G118, along with NGC_2175, Pismis_27, UBC_1303 and FSR_0902.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Data

🔍 Search references for HSC 1504 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–	93.576	21.116	0.496	0.157	-2.195	35.586
Zhang et al.	2024	93.57	21.096	–	–	–	–
Hunt & Reffert	2024	93.57	21.096	0.498	0.152	-2.19	35.56
Cavallo et al.	2024	93.62	21.117	0.499	–	–	–
Hunt & Reffert	2023	93.57	21.096	0.498	0.152	-2.19	35.56

💡 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–	1.85	1.45	1.34	26	0.194	204	–	–
Zhang et al.	2024	–	–	–	–	-0.223⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.85	1.44	1.34	26	–	204⁽¹⁾	–	–
Cavallo et al.	2024	2.41	1.90	–	19	0.610	–	–	–
Hunt & Reffert	2023	1.85	1.45	1.34	26	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Cmg 46	72.0	93.61	21.19	0.5	0.16	-2.2	–	0.16

💡 Note: The % column shows the percentage of members that HSC 1504 shares with each listed object.

Visualization

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