HSC 845

0.14 UTI

0.0

C_N

0.13

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 1.6 [pc], 0.7 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.13 Very loose
C_C3 0.5 Intermediate 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

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HSC 845 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

⚠️ 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.

Relatively close High extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.92 (50th percentile), true positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.92 (50th percentile), true positive? (human-assigned).

Data

🔍 Search references for HSC 845 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–	343.183	59.157	0.331	-3.321	-2.741	-69.923
Hunt & Reffert	2024	343.186	59.157	0.328	-3.327	-2.732	-13.728
Cavallo et al.	2024	343.198	59.182	0.324	–	–	–
Hunt & Reffert	2023	343.186	59.157	0.328	-3.327	-2.732	-13.728

💡 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–	2.99	3.42	1.78	20	-0.260	259	–	–
Hunt & Reffert	2024	2.99	3.42	1.78	20	–	259⁽¹⁾	–	–
Cavallo et al.	2024	3.84	4.33	–	15	-0.260	–	–	–
Hunt & Reffert	2023	2.99	3.42	1.78	20	–	–	–	–

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

Visualization

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