HSC 1845

0.45 UTI

0.27

C_N

0.97

C_dens

0.5

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 27

Stellar density (N₅₀/rad) 4.8 [N/pc²]

C3 classification BB

C_N 0.27 Poorly populated
C_dens 0.97 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 1845 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

Distant Moderate extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 210 along with UBC_1375.

Palma et al. (2025)
Classified as optical pair P30, along with UBC_1375.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1845 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–	111.672	-18.759	0.283	-1.599	2.198	–
Hunt & Reffert	2024	111.679	-18.755	0.29	-1.59	2.181	–
Cavallo et al.	2024	111.671	-18.769	0.288	–	–	–
Hunt & Reffert	2023	111.679	-18.755	0.29	-1.59	2.181	–

💡 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–	3.56	1.75	1.2	42	0.200	342	–	–
Liu et al.	2025	8.02	0.67	–	42	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	342⁽¹⁾	–	–
Cavallo et al.	2024	3.56	2.04	–	37	0.200	–	–	–
Hunt & Reffert	2023	3.19	1.75	1.20	93	–	–	–	–

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

Visualization

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