Mayer 1

(MWSC 34)

0.86 UTI

0.68

C_N

0.87

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 86

Radius (P>50% members) 5.3 [arcmin]

C_N 0.68 Moderately populated
C_dens 0.87 Dense
C_C3 0.75 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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Mayer 1 is a moderately populated, dense object of high C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~2.88 kpc) differs significantly from the median photometric distance (~2.14 kpc).

Relatively close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Mayer 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	–	5.498	61.76	0.347	-3.459	-1.481	-10.431
Li et al.	2025	5.502	61.751	0.353	-3.341	-1.426	–
Almeida et al.	2025	5.519	61.761	–	–	–	–
Hunt & Reffert	2024	5.487	61.75	0.346	-3.466	-1.469	–
Celli et al.	2024	5.475	61.759	–	–	–	–
Cavallo et al.	2024	5.524	61.769	0.349	–	–	–
Hunt & Reffert	2023	5.487	61.75	0.346	-3.466	-1.469	–
Just et al.	2023	5.504	61.738	–	–	–	–
Dias et al.	2021	5.519	61.761	0.354	-3.398	-1.487	–
Cantat-Gaudin et al.	2020	5.502	61.751	0.353	-3.341	-1.426	–
Sánchez et al.	2020	5.475	61.75	–	-3.213	-1.482	–
Cantat-Gaudin & Anders	2020	5.502	61.751	0.353	-3.341	-1.426	–
Cantat-Gaudin et al.	2018	5.502	61.751	0.353	-3.341	-1.426	–
Loktin & Popova	2017	5.475	61.75	–	-2.412	-3.28	-20.9
Kharchenko et al.	2016	5.504	61.738	–	–	–	–
Dias et al.	2014	5.475	61.75	–	-1.68	-1.18	–
Kharchenko et al.	2013	5.514	61.741	–	-3.87	-3.27	-20.9
Gozha et al.	2012	5.475	61.75	–	–	–	–
Kharchenko et al.	2012	5.514	61.741	–	-3.96	-3.21	-20.9
Piskunov et al.	2008	5.469	61.741	–	–	–	–
Kharchenko et al.	2007	5.47	61.75	–	0.2	–	-20.9
Kharchenko et al.	2005	5.47	61.74	–	-5.27	-5.87	-20.9
Kharchenko et al.	2003	5.47	61.75	–	-4.46	-6.66	–
Dias et al.	2002	5.475	61.75	–	-1.68	-1.18	-20.9

💡 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
Li et al.	2025	2.14	1.39	–	81	-0.151	–	–	–
Almeida et al.	2025	2.38	1.58	–	14	–	140	–	–
Hunt & Reffert	2024	–	–	–	–	–	500*	–	–
Celli et al.	2024	–	–	–	29	–	230	–	–
Cavallo et al.	2024	2.62	1.55	–	15	0.430	–	–	–
Hunt & Reffert	2023	2.74	1.66	2.12	22	–	–	–	–
Just et al.	2023	–	–	–	55	–	91	–	–
Dias et al.	2021	2.38	1.58	–	14	0.012	–	–	–
Cantat-Gaudin et al.	2020	2.62	1.29	–	29	–	–	–	–
Cantat-Gaudin & Anders	2020	2.62	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.62	–	–	–	–	–	–	–
Loktin & Popova	2017	3.36	1.36	–	69	–	–	–	–
Kharchenko et al.	2016	1.43	1.55	–	55	–	–	–	–
Kharchenko et al.	2013	1.43	1.55	–	55	–	–	–	–
Gozha et al.	2012	1.43	–	–	–	–	1413	–	–
Kharchenko et al.	2012	1.43	1.55	–	55	–	–	–	–
Piskunov et al.	2008	1.43	1.24	–	55	–	–	–	–
Kharchenko et al.	2005	1.43	1.24	–	55	–	–	–	–
Kharchenko et al.	2003	1.43	1.24	–	–	–	–	–	–
Dias et al.	2002	1.43	1.55	–	55	–	–	–	–

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

Visualization

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