HSC 1389

0.40 UTI

0.26

C_N

1.0

C_dens

0.12

C_C3

0.31

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 26

Radius (P>50% members) 1.6 [arcmin]

C_N 0.26 Poorly populated
C_dens 1.0 Very dense
C_C3 0.12 Very low quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

HSC 1389 is a poorly populated, very dense object of very low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~4.56 kpc) differs significantly from the median photometric distance (~3.48 kpc).

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 Old

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1389 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	82.414	30.04	0.219	0.878	0.566	-4.002
Hu & Soubiran	2025	82.418	30.054	–	–	–	–
Zhang et al.	2024	82.41	30.038	–	–	–	–
Hunt & Reffert	2024	82.41	30.038	0.233	0.896	0.609	-3.996
Cavallo et al.	2024	82.418	30.054	0.234	–	–	–
Hunt & Reffert	2023	82.41	30.038	0.233	0.896	0.609	-3.996

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.160*	–	–	–
Zhang et al.	2024	–	–	–	–	-0.448*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	467*	–	–
Cavallo et al.	2024	2.87	1.97	–	2089	0.220	–	–	–
Hunt & Reffert	2023	4.09	2.19	1.65	1312	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3491	92.3	82.41	30.04	0.23	0.89	0.55	-4.0	0.02

💡 Note: The % column shows the percentage of members that HSC 1389 shares with each listed object.

Visualization

ℹ️

1 2