HSC 2039

0.32 UTI

0.0

C_N

0.73

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 3.6 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.73 Moderately dense
C_C3 0.75 High quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

HSC 2039 is a sparse, moderately dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.

Relatively close Low extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as primordial binary cluster 156 along with Gulliver_2.

Palma et al. (2025)
Classified as optical pair P456, along with HSC_2030.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Data

🔍 Search references for HSC 2039 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	123.566	-36.143	0.693	-4.628	5.139	–
Hunt & Reffert	2024	123.465	-36.139	0.703	-4.615	5.153	–
Cavallo et al.	2024	123.684	-36.151	0.702	–	–	–
Hunt & Reffert	2023	123.465	-36.139	0.703	-4.615	5.153	–

💡 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–	1.63	0.6	1.07	6	-0.240	80	–	–
Liu et al.	2025	1.80	0.25	–	6	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	80⁽¹⁾	–	–
Cavallo et al.	2024	1.63	0.88	–	5	-0.240	–	–	–
Hunt & Reffert	2023	1.33	0.60	1.07	7	–	–	–	–

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

Visualization

ℹ️

1 2