ASCC 128

(MWSC 3720)

0.87 UTI

0.7

C_N

0.68

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 89

Stellar density (N₅₀/rad) 3.4 [N/pc²]

C3 classification AA

C_N 0.7 Moderately populated
C_dens 0.68 Moderately dense
C_C3 1.0 Very high quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

ASCC 128 is a moderately populated, moderately dense object of very high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.

Close Low extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for ASCC 128 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	349.968	54.439	1.523	1.236	0.155	-14.835
Li et al.	2025	349.949	54.435	1.509	1.236	0.186	–
Almeida et al.	2025	349.937	54.402	–	–	–	–
Alfonso et al.	2024	-10.197	54.406	1.494	1.236	0.151	–
Zhang et al.	2024	350.161	54.573	–	–	–	–
Hunt & Reffert	2024	350.161	54.573	1.503	1.185	0.113	-14.485
Cavallo et al.	2024	349.281	54.169	1.504	–	–	–
Hunt & Reffert	2023	350.161	54.573	1.503	1.185	0.113	-14.485
Almeida et al.	2023	349.796	54.399	–	–	–	–
Just et al.	2023	350.273	54.666	–	–	–	–
He et al.	2022	350.001	54.571	1.522	1.255	0.081	–
Tarricq et al.	2022	350.123	54.389	1.518	1.236	0.14	–
Dias et al.	2021	349.937	54.402	1.507	1.213	0.188	–
Cantat-Gaudin et al.	2020	349.949	54.435	1.509	1.236	0.186	–
Cantat-Gaudin & Anders	2020	349.949	54.435	1.509	1.236	0.186	–
Bossini et al.	2019	349.949	54.435	–	–	–	–
Soubiran et al.	2018	349.949	54.435	–	–	–	-14.91
Bica et al.	2019	350.135	54.601	–	–	–	–
Cantat-Gaudin et al.	2018	349.949	54.435	1.509	1.236	0.186	–
Kharchenko et al.	2016	350.273	54.666	–	–	–	–
Dias et al.	2014	350.146	54.6	–	-1.79	-0.18	–
Kharchenko et al.	2013	350.28	54.67	–	-1.58	-1.68	–
Kharchenko et al.	2012	350.28	54.67	–	-1.58	-1.68	–
Piskunov et al.	2008	350.135	54.601	–	–	–	–
Piskunov et al.	2007	350.135	54.601	–	–	–	–
Kharchenko et al.	2005	350.14	54.6	–	-1.08	-1.57	–
Dias et al.	2002	350.146	54.6	–	-1.79	-0.18	–

💡 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–	0.67	0.45	0.56	275	0.000	152	0.52	–
Li et al.	2025	0.68	0.62	–	105	-0.052	–	–	–
Almeida et al.	2025	0.65	0.61	–	175	–	141	–	–
Alfonso et al.	2024	0.67	0.41	–	307	0.025	–	–	–
Zhang et al.	2024	–	–	–	–	-0.131⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	103⁽¹⁾	–	–
Cavallo et al.	2024	0.68	0.45	–	155	0.480	–	–	–
Hunt & Reffert	2023	0.64	0.33	0.56	111	–	–	–	–
Almeida et al.	2023	0.64	0.68	–	244	-0.052	241⁽¹⁾	0.52	–
Just et al.	2023	–	–	–	284	–	47	–	–
He et al.	2022	–	0.75	–	71	–	–	–	–
Tarricq et al.	2022	0.66	–	–	263	–	–	–	–
Dias et al.	2021	0.65	0.61	–	175	0.025	–	–	–
Cantat-Gaudin et al.	2020	0.67	0.41	–	251	–	–	–	–
Cantat-Gaudin & Anders	2020	0.65	–	–	–	–	–	–	–
Bossini et al.	2019	0.64	0.45	–	306	0.000	–	–	–
Soubiran et al.	2018	0.65	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.65	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.90	0.62	–	284	–	–	–	–
Kharchenko et al.	2013	0.90	0.62	–	284	–	–	–	–
Kharchenko et al.	2012	0.90	0.62	–	284	–	–	–	–
Piskunov et al.	2008	0.90	0.40	–	275	–	531⁽¹⁾	–	–
Piskunov et al.	2007	0.90	0.40	–	275	–	164	–	–
Kharchenko et al.	2005	0.90	0.40	–	275	–	–	–	–
Dias et al.	2002	0.90	0.40	–	275	–	–	–	–

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

Visualization

ℹ️

1 2 3