NGC 4439

(MWSC 2035)

0.88 UTI

0.67

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 84

Stellar density (N₅₀/rad) 12.3 [N/pc²]

C3 classification AB

C_N 0.67 Moderately populated
C_dens 1.0 Very 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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NGC 4439 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is very well-studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for NGC 4439 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–	187.115	-60.096	0.501	-7.124	-0.432	-24.978
Li et al.	2025	187.119	-60.097	0.474	-7.089	-0.413	–
Almeida et al.	2025	187.121	-60.098	–	–	–	–
Hunt & Reffert	2024	187.111	-60.097	0.499	-7.175	-0.434	-19.882
Cavallo et al.	2024	187.102	-60.092	0.501	–	–	–
Hunt & Reffert	2023	187.111	-60.097	0.499	-7.175	-0.434	-19.882
Almeida et al.	2023	187.121	-60.102	–	–	–	–
Just et al.	2023	187.108	-60.107	–	–	–	–
Jaehnig et al.	2021	187.105	-60.109	0.512	-7.116	-0.461	–
Rain et al.	2021	187.119	-60.097	0.474	-7.089	-0.413	–
Dias et al.	2021	187.121	-60.098	0.473	-7.054	-0.374	–
Cantat-Gaudin et al.	2020	187.119	-60.097	0.474	-7.089	-0.413	–
Cantat-Gaudin & Anders	2020	187.119	-60.097	0.474	-7.089	-0.413	–
Bossini et al.	2019	187.119	-60.097	–	–	–	–
Cantat-Gaudin et al.	2018	187.119	-60.097	0.474	-7.089	-0.413	–
Loktin & Popova	2017	187.11	-60.105	–	-12.942	-5.335	–
Kharchenko et al.	2016	187.108	-60.107	–	–	–	–
Dias et al.	2014	187.112	-60.105	–	-4.92	-2.78	–
Kharchenko et al.	2013	187.117	-60.11	–	-11.4	-4.73	–
Piskunov et al.	2008	187.098	-60.093	–	–	–	–
van den Bergh	2006	187.1	-60.1	–	–	–	–
Kharchenko et al.	2005	187.11	-60.1	–	-10.8	-5.04	–
Kharchenko et al.	2003	187.11	-60.1	–	-12.18	-6.63	–
Dias et al.	2002	187.113	-60.105	–	-10.49	-0.85	–
Dambis	1999	187.1	-60.1	–	–	–	–

💡 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–	1.78	1.08	0.7	52	0.000	290	0.53	0.0
Li et al.	2025	1.67	1.14	–	58	-0.049	–	–	–
Almeida et al.	2025	1.79	1.25	–	51	–	297	–	–
Hunt & Reffert	2024	–	–	–	–	–	473⁽¹⁾	–	–
Cavallo et al.	2024	1.76	1.40	–	39	-0.130	–	–	–
Hunt & Reffert	2023	1.82	0.97	0.70	94	–	–	–	–
Almeida et al.	2023	1.78	1.23	–	53	0.055	282⁽¹⁾	0.53	–
Just et al.	2023	–	–	–	51	–	203	–	–
Jaehnig et al.	2021	1.98⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	1.99	1.05	–	59	–	–	–	0
Dias et al.	2021	1.79	1.25	–	51	0.019	–	–	–
Cantat-Gaudin et al.	2020	2.01	0.99	–	52	–	–	–	–
Cantat-Gaudin & Anders	2020	1.99	–	–	–	–	–	–	–
Bossini et al.	2019	2.05	1.06	–	60	0.000	–	–	–
Cantat-Gaudin et al.	2018	1.99	–	–	–	–	–	–	–
Loktin & Popova	2017	1.81	1.09	–	74	–	–	–	–
Kharchenko et al.	2016	1.66	0.97	–	51	–	–	–	–
Kharchenko et al.	2013	1.66	0.97	–	51	–	–	–	–
Piskunov et al.	2008	1.78	1.08	–	51	–	–	–	–
van den Bergh	2006	1.78	1.08	–	81	–	–	–	–
Kharchenko et al.	2005	1.78	1.08	–	51	–	–	–	–
Kharchenko et al.	2003	1.78	1.08	–	–	–	–	–	–
Dias et al.	2002	1.78	1.08	–	81	–	–	–	–
Dambis	1999	1.56	1.04	–	63	–	–	–	–

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

Visualization

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