HSC 399

0.33 UTI

0.25

C_N

0.85

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 0.9 [pc], 4.3 [pc^-2]

C3 classification BB

C_N 0.25 Poorly populated
C_dens 0.85 Dense
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 399 is a poorly populated, dense 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, intermediate-age cluster (see Parameters). It was recently reported in the literature.

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

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.75 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.75 (50th percentile).

Data

🔍 Search references for HSC 399 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–	287.781	13.871	0.301	-1.958	-4.713	4.316
Hunt & Reffert	2024	287.779	13.87	0.3	-1.976	-4.704	18.01
Cavallo et al.	2024	287.774	13.859	0.303	–	–	–
Hunt & Reffert	2023	287.779	13.87	0.3	-1.976	-4.704	18.01

💡 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–	3.0	2.98	1.1	261	-0.020	223	–	–
Hunt & Reffert	2024	3.00	2.98	1.10	261	–	223⁽¹⁾	–	–
Cavallo et al.	2024	2.70	3.31	–	224	-0.020	–	–	–
Hunt & Reffert	2023	3.00	2.98	1.10	261	–	–	–	–

(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 3260	100.0	287.78	13.87	0.3	-1.96	-4.71	13.57	0.15

💡 Note: The % column shows the percentage of members that HSC 399 shares with each listed object.

Visualization

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