ASCC 30

(MWSC 1028; Alessi 35)

0.81 UTI

0.51

C_N

0.78

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 52

Stellar density (N₅₀/rad) 3.9 [N/pc²]

C3 classification AB

C_N 0.51 Moderately populated
C_dens 0.78 Dense
C_C3 0.75 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

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ASCC 30 is a moderately populated, 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, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively 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 30 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–	104.254	-6.205	0.902	-1.587	-0.159	20.203
Li et al.	2025	104.271	-6.23	0.897	-1.595	-0.171	–
Almeida et al.	2025	104.318	-6.3	–	–	–	–
Hunt & Reffert	2024	104.237	-6.212	0.888	-1.579	-0.157	15.534
Cavallo et al.	2024	104.283	-6.194	0.894	–	–	–
Hunt & Reffert	2023	104.237	-6.212	0.888	-1.579	-0.157	15.534
Almeida et al.	2023	104.3	-6.304	–	–	–	–
Just et al.	2023	104.251	-6.213	–	–	–	–
He et al.	2022	104.267	-6.241	0.907	-1.583	-0.14	–
Tarricq et al.	2022	104.243	-6.167	0.892	-1.57	-0.179	–
Dias et al.	2021	104.318	-6.3	0.898	-1.582	-0.166	–
Cantat-Gaudin et al.	2020	104.271	-6.23	0.897	-1.595	-0.171	–
Cantat-Gaudin & Anders	2020	104.271	-6.23	0.897	-1.595	-0.171	–
Soubiran et al.	2018	104.271	-6.23	–	–	–	36.34
Bica et al.	2019	104.245	-6.21	–	–	–	–
Cantat-Gaudin et al.	2018	104.271	-6.23	0.897	-1.595	-0.171	–
Kharchenko et al.	2016	104.251	-6.213	–	–	–	–
Dias et al.	2014	104.25	-6.21	–	-0.35	-1.54	–
Kharchenko et al.	2013	104.257	-6.215	–	-2.4	-0.01	–
Piskunov et al.	2008	104.245	-6.21	–	–	–	–
Kharchenko et al.	2005	104.25	-6.21	–	-2.89	0.6	–
Dias et al.	2002	104.25	-6.21	–	-2.89	0.6	–

💡 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–	1.06	0.46	0.9	176	-0.033	182	0.42	–
Li et al.	2025	1.21	0.63	–	178	-0.234	–	–	–
Almeida et al.	2025	1.07	0.64	–	316	–	142	–	–
Hunt & Reffert	2024	–	–	–	–	–	221⁽¹⁾	–	–
Cavallo et al.	2024	1.09	0.47	–	288	0.250	–	–	–
Hunt & Reffert	2023	1.05	0.34	0.90	160	–	–	–	–
Almeida et al.	2023	1.05	0.66	–	192	-0.115	325⁽¹⁾	0.42	–
Just et al.	2023	–	–	–	176	–	25	–	–
He et al.	2022	–	0.65	–	79	–	–	–	–
Tarricq et al.	2022	1.04	–	–	174	–	–	–	–
Dias et al.	2021	1.07	0.64	–	316	0.049	–	–	–
Cantat-Gaudin et al.	2020	1.07	0.35	–	174	–	–	–	–
Cantat-Gaudin & Anders	2020	1.08	–	–	–	–	–	–	–
Soubiran et al.	2018	1.08	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.08	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.81	0.45	–	176	–	–	–	–
Kharchenko et al.	2013	0.81	0.45	–	176	–	–	–	–
Piskunov et al.	2008	0.80	0.46	–	158	–	–	–	–
Kharchenko et al.	2005	0.80	0.46	–	158	–	–	–	–
Dias et al.	2002	0.80	0.46	–	158	–	–	–	–

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

Visualization

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