HSC 2869

0.27 UTI

0.25

C_N

0.46

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 25

Stellar density (N₅₀/rad) 2.3 [N/pc²]

C3 classification AC

C_N 0.25 Poorly populated
C_dens 0.46 Loose
C_C3 0.62 Intermediate quality
C_lit 0.0 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 2869 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near 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 age parameter (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.

Relatively close Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 2869 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–	258.408	-39.845	0.771	2.435	-2.593	0.318
Hunt & Reffert	2024	258.405	-39.841	0.723	2.44	-2.527	16.03
Cavallo et al.	2024	258.381	-39.809	0.738	–	–	–
Hunt & Reffert	2023	258.405	-39.841	0.723	2.44	-2.527	16.03

💡 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–	1.175	2.665	1.91	79	-0.350	433	–	–
Hunt & Reffert	2024	–	–	–	–	–	433⁽¹⁾	–	–
Cavallo et al.	2024	1.05	2.83	–	138	-0.350	–	–	–
Hunt & Reffert	2023	1.30	2.50	1.91	20	–	–	–	–

(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 3698	100.0	258.35	-39.81	0.77	2.43	-2.63	-7.82	0.17

💡 Note: The % column shows the percentage of members that HSC 2869 shares with each listed object.

Visualization

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