Moffat 1

(MWSC 2346; C1557-540)

0.80 UTI

0.38

C_N

1.0

C_dens

1.0

C_C3

0.81

C_lit

1.0

C_dup

N₅₀ (P>50% members) 38

Stellar density (N₅₀/rad) 11.6 [N/pc²]

C3 classification AA

C_N 0.38 Poorly populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.81 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Moffat 1 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, very young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is well-studied in the literature.

Relatively close Moderate extinction Metal-rich Very young

Palma et al. (2025)
Classified as optical pair P541, along with Teutsch_246.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Cavallo et al. (2024)
Silver sample.

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Data

🔍 Search references for Moffat 1 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–	240.403	-54.144	0.402	-2.294	-3.029	-49.562
Almeida et al.	2025	240.41	-54.151	–	–	–	–
Hunt & Reffert	2024	240.399	-54.146	0.396	-2.318	-3.019	-51.7
Cavallo et al.	2024	240.403	-54.146	0.401	–	–	–
Hunt & Reffert	2023	240.399	-54.146	0.396	-2.318	-3.019	-51.7
Just et al.	2023	240.363	-54.116	–	–	–	–
Dias et al.	2021	240.41	-54.151	0.404	-2.225	-3.018	–
Cantat-Gaudin et al.	2020	240.397	-54.149	0.402	-2.211	-3.037	–
Cantat-Gaudin & Anders	2020	240.397	-54.149	0.402	-2.211	-3.037	–
Bica et al.	2019	240.399	-54.143	–	–	–	–
Cantat-Gaudin et al.	2018	240.397	-54.149	0.402	-2.211	-3.037	–
Kharchenko et al.	2016	240.363	-54.116	–	–	–	–
Dias et al.	2014	240.375	-54.117	–	-3.8	-4.41	-42.0
Kharchenko et al.	2013	240.375	-54.117	–	0.52	-0.76	-42.0
Morales et al.	2013	240.375	-54.117	–	–	–	–
van den Bergh	2006	240.375	-54.133	–	–	–	–
Dias et al.	2002	240.375	-54.117	–	-3.8	-4.41	-42.0

💡 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–	2.275	2.9	2.61	6	0.510	112	–	–
Almeida et al.	2025	2.51	2.41	–	6	–	112	–	–
Hunt & Reffert	2024	–	–	–	–	–	941⁽¹⁾	–	–
Cavallo et al.	2024	1.76	2.00	–	32	0.520	–	–	–
Hunt & Reffert	2023	2.27	2.99	2.61	16	–	–	–	–
Just et al.	2023	–	–	–	6	–	90	–	–
Dias et al.	2021	2.51	2.41	–	6	0.500	–	–	–
Cantat-Gaudin et al.	2020	2.28	2.02	–	78	–	–	–	–
Cantat-Gaudin & Anders	2020	2.32	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.32	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.12	2.90	–	6	–	–	–	–
Kharchenko et al.	2013	2.12	2.90	–	6	–	–	–	–
Morales et al.	2013	2.10	–	–	10	–	–	–	–
van den Bergh	2006	3.30	5.70	–	4	–	–	–	–
Dias et al.	2002	2.10	3.10	–	10	–	–	–	–

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

Visualization

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