ASCC 101

(MWSC 3070; LeDrew 6; Alessi J1913.6+3619; OCSN 133)

0.96 UTI

0.79

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 196

Radius (P>50% members) 32.0 [arcmin]

C3 classification AA

C_N 0.79 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

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

Overview

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ASCC 101 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a low-mass, 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.

Very close Low extinction Low mass 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 101 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–	288.399	36.356	2.514	0.978	1.231	-18.989
Li et al.	2025	288.399	36.369	2.488	0.934	1.288	–
Wei et al.	2025	288.378	36.335	2.524	0.973	1.222	–
Almeida et al.	2025	288.419	36.365	–	–	–	–
Alfonso et al.	2024	288.412	36.347	2.483	0.978	1.234	–
Zhang et al.	2024	288.345	36.36	–	–	–	–
Hunt & Reffert	2024	288.345	36.36	2.51	0.967	1.281	-18.116
Cavallo et al.	2024	288.415	36.284	2.506	–	–	–
Hunt & Reffert	2023	288.345	36.36	2.51	0.967	1.281	-18.116
Qin et al.	2023	288.35	36.34	2.52	0.92	1.23	-18.46
Just et al.	2023	288.348	36.333	–	–	–	–
He et al.	2022	288.361	36.362	2.52	0.936	1.262	–
Tarricq et al.	2022	288.408	36.377	2.525	0.944	1.199	–
Dias et al.	2021	288.419	36.365	2.502	0.924	1.364	-19.198
Cantat-Gaudin et al.	2020	288.399	36.369	2.488	0.934	1.288	–
Cantat-Gaudin & Anders	2020	288.399	36.369	2.488	0.934	1.288	–
Bossini et al.	2019	288.399	36.369	–	–	–	–
Soubiran et al.	2018	288.399	36.369	–	–	–	-20.17
Bica et al.	2019	288.433	36.315	–	–	–	–
Cantat-Gaudin et al.	2018	288.399	36.369	2.488	0.934	1.288	–
Kharchenko et al.	2016	288.348	36.333	–	–	–	–
Dias et al.	2014	288.404	36.33	–	-0.17	-2.76	–
Kharchenko et al.	2013	288.352	36.335	–	0.81	3.4	-32.0
Gozha et al.	2012	288.404	36.33	–	–	–	–
Piskunov et al.	2008	288.399	36.328	–	–	–	–
Kharchenko et al.	2007	288.4	36.33	–	0.36	–	-32.0
Piskunov et al.	2007	288.399	36.328	–	–	–	–
Kharchenko et al.	2005	288.4	36.33	–	0.81	1.87	–
Dias et al.	2002	288.404	36.33	–	0.81	1.87	-32.0

💡 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–	0.4	0.1	0.38	331	0.004	40	0.27	–
Li et al.	2025	0.40	0.06	–	413	0.154	–	–	–
Wei et al.	2025	0.41	0.45	–	158	0.250	182	0.27	–
Almeida et al.	2025	0.40	0.15	–	332	–	97	–	–
Alfonso et al.	2024	0.41	0.19	–	277	0.004	–	–	–
Zhang et al.	2024	–	–	–	–	-0.061⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	148⁽¹⁾	–	–
Cavallo et al.	2024	0.41	0.40	–	138	0.390	–	–	–
Hunt & Reffert	2023	0.38	0.10	0.38	189	–	–	–	–
Qin et al.	2023	0.42	0.25	–	112	–	–	–	–
Just et al.	2023	–	–	–	417	–	39	–	–
He et al.	2022	–	0.25	–	126	–	–	–	–
Tarricq et al.	2022	0.41	–	–	501	–	–	–	–
Dias et al.	2021	0.40	0.15	–	332	0.004	–	–	–
Cantat-Gaudin et al.	2020	0.41	0.19	–	490	–	–	–	–
Cantat-Gaudin & Anders	2020	0.40	–	–	–	–	–	–	–
Bossini et al.	2019	0.38	0.05	–	494	0.000	–	–	–
Soubiran et al.	2018	0.40	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.40	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.36	0.00	–	417	–	–	–	–
Kharchenko et al.	2013	0.36	0.00	–	417	–	–	–	–
Gozha et al.	2012	0.35	–	–	331	–	29	–	–
Piskunov et al.	2008	0.35	0.00	–	331	–	40⁽¹⁾	–	–
Piskunov et al.	2007	0.35	0.00	–	331	–	12	–	–
Kharchenko et al.	2005	0.35	0.00	–	331	–	–	–	–
Dias et al.	2002	0.35	0.00	–	331	–	–	–	–

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

Visualization

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