Melotte 139

(Collinder 296; VDBH 181; NGC 6025; OCL 939; vdBergh-Hagen 181; ESO 136 14; MWSC 2347; FoF 2278)

0.97 UTI

0.86

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 386

Stellar density (N₅₀/rad) 38.5 [N/pc²]

C3 classification AA

C_N 0.86 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

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

Overview

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Melotte 139 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is very well-studied in the literature.

Close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 139 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–	240.783	-60.427	1.285	-2.965	-3.055	7.532
Li et al.	2025	240.779	-60.43	1.269	-2.901	-3.035	–
Almeida et al.	2025	240.751	-60.435	–	–	–	–
Alfonso et al.	2024	240.776	-60.445	1.251	-2.955	-3.034	–
Hunt & Reffert	2024	240.793	-60.432	1.284	-2.951	-3.034	7.733
Cavallo et al.	2024	240.726	-60.473	1.287	–	–	–
Hunt & Reffert	2023	240.793	-60.432	1.284	-2.951	-3.034	7.733
Almeida et al.	2023	240.734	-60.425	–	–	–	–
Cordoni et al.	2023	240.751	-60.435	1.27	-2.91	-3.026	–
He et al.	2022	240.774	-60.438	1.291	-2.962	-3.046	–
Tarricq et al.	2022	240.815	-60.422	1.291	-2.965	-3.042	–
Jaehnig et al.	2021	240.784	-60.424	1.301	-2.923	-3.034	–
Rain et al.	2021	240.779	-60.43	1.269	-2.901	-3.035	–
Dias et al.	2021	240.751	-60.435	1.27	-2.91	-3.026	15.101
Cantat-Gaudin et al.	2020	240.779	-60.43	1.269	-2.901	-3.035	–
Cantat-Gaudin & Anders	2020	240.779	-60.43	1.269	-2.901	-3.035	–
Liu & Pang	2019	240.798	-60.45	1.267	-2.879	-3.021	–
Bossini et al.	2019	240.779	-60.43	–	–	–	–
Soubiran et al.	2018	240.779	-60.43	–	–	–	15.53
Bica et al.	2019	240.816	-60.415	–	–	–	–
Cantat-Gaudin et al.	2018	240.779	-60.43	1.269	-2.901	-3.035	–
Loktin & Popova	2017	240.825	-60.433	–	-5.23	-3.19	-3.4
Dias et al.	2014	240.821	-60.432	–	-5.23	-3.53	–
Gozha et al.	2012	240.821	-60.432	–	–	–	–
Piskunov et al.	2008	240.814	-60.429	–	–	–	–
Kharchenko et al.	2007	240.82	-60.43	–	0.38	–	-3.4
Piskunov et al.	2007	240.814	-60.429	–	–	–	–
van den Bergh	2006	240.825	-60.433	–	–	–	–
Kharchenko et al.	2005	240.82	-60.43	–	-4.09	-2.5	-3.4
Kharchenko et al.	2003	240.82	-60.43	–	-3.65	-2.47	–
Chen et al.	2003	240.799	-60.436	–	–	–	–
Dias et al.	2002	240.821	-60.432	–	-5.23	-3.53	-16.1
Dambis	1999	240.821	-60.432	–	–	–	–

💡 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–	0.76	0.5	0.81	91	0.180	575	0.36	0.0
Li et al.	2025	0.79	0.56	–	107	0.148	–	–	–
Almeida et al.	2025	0.76	0.61	–	173	–	755	–	–
Alfonso et al.	2024	0.75	0.43	–	169	0.146	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1201⁽¹⁾	–	–
Cavallo et al.	2024	0.74	0.62	–	166	0.180	–	–	–
Hunt & Reffert	2023	0.74	0.38	0.81	115	–	–	–	–
Almeida et al.	2023	0.75	0.69	–	149	-0.001	575⁽¹⁾	0.42	–
Cordoni et al.	2023	0.76	0.61	–	173	0.147	1053	0.30	0.00
He et al.	2022	–	0.70	–	79	–	–	–	–
Tarricq et al.	2022	0.74	–	–	112	–	–	–	–
Jaehnig et al.	2021	0.77⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	0.77	0.46	–	76	–	–	–	1
Dias et al.	2021	0.76	0.61	–	173	0.147	–	–	–
Cantat-Gaudin et al.	2020	0.75	0.43	–	105	–	–	–	–
Cantat-Gaudin & Anders	2020	0.77	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	66	0.250	–	–	–
Bossini et al.	2019	0.78	0.41	–	125	0.190	–	–	–
Soubiran et al.	2018	0.77	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.77	–	–	–	–	–	–	–
Loktin & Popova	2017	0.77	0.49	–	78	–	–	–	–
Gozha et al.	2012	0.76	–	–	77	0.190	417	–	–
Piskunov et al.	2008	0.77	0.50	–	91	–	457⁽¹⁾	–	–
Piskunov et al.	2007	0.77	0.50	–	91	–	142	–	–
van den Bergh	2006	0.76	0.50	–	78	–	–	–	–
Kharchenko et al.	2005	0.77	0.50	–	91	–	–	–	–
Kharchenko et al.	2003	0.76	0.50	–	–	–	–	–	–
Chen et al.	2003	0.76	0.49	–	70	0.190⁽¹⁾	–	–	–
Dias et al.	2002	0.76	0.49	–	77	0.190	–	–	–
Dambis	1999	0.56	0.50	–	35	–	–	–	–

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

Visualization

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