NGC 869

(MWSC 175)

1.0 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 678

Stellar density (N₅₀/rad) 46.4 [N/pc²]

C3 classification AA

C_N 1.0 Very 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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NGC 869 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It is very well-studied in the literature.

Note: This object shares a very small percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Very young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for NGC 869 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–	34.751	57.138	0.403	-0.664	-1.13	-50.337
Li et al.	2025	34.741	57.134	0.399	-0.689	-1.082	–
Almeida et al.	2025	34.744	57.136	–	–	–	–
Zhang et al.	2024	34.766	57.14	–	–	–	–
Hunt & Reffert	2024	34.766	57.14	0.404	-0.654	-1.143	-67.639
Celli et al.	2024	34.741	57.134	–	–	–	–
Cavallo et al.	2024	34.735	57.132	0.403	–	–	–
Hunt & Reffert	2023	34.766	57.14	0.404	-0.654	-1.143	-67.639
Just et al.	2023	34.728	57.143	–	–	–	–
Jaehnig et al.	2021	35.09	57.142	0.424	-0.652	-1.079	–
Rain et al.	2021	34.741	57.134	0.399	-0.689	-1.082	–
Dias et al.	2021	34.744	57.136	0.4	-0.682	-1.077	–
Cantat-Gaudin et al.	2020	34.741	57.134	0.399	-0.689	-1.082	–
Cantat-Gaudin & Anders	2020	34.741	57.134	0.399	-0.689	-1.082	–
Soubiran et al.	2018	34.741	57.134	–	–	–	-62.82
Cantat-Gaudin et al.	2018	34.741	57.134	0.399	-0.689	-1.082	–
Loktin & Popova	2017	34.755	57.129	–	-0.738	-0.15	-41.8
Kharchenko et al.	2016	34.728	57.143	–	–	–	–
Dias et al.	2014	34.75	57.128	–	-1.42	-0.95	–
Kharchenko et al.	2013	34.74	57.145	–	-2.81	0.05	-41.8
Gozha et al.	2012	34.75	57.128	–	–	–	–
Kharchenko et al.	2012	34.74	57.145	–	-2.81	0.05	-41.77
Piskunov et al.	2008	34.759	57.149	–	–	–	–
Kharchenko et al.	2007	34.75	57.13	–	1.75	–	-39.84
van den Bergh	2006	34.775	57.15	–	–	–	–
Kharchenko et al.	2005	34.77	57.15	–	-0.49	-0.9	-39.82
Kharchenko et al.	2003	34.77	57.15	–	-0.56	1.46	–
Chen et al.	2003	34.719	57.178	–	-0.92	-1.66	-53.0
Dias et al.	2002	34.75	57.128	–	-0.92	-1.66	-42.84
Dambis	1999	34.75	57.128	–	–	–	–

💡 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–	2.25	1.75	0.81	15	-0.200	4596	–	0.0
Li et al.	2025	2.26	1.68	–	17	0.051	–	–	–
Almeida et al.	2025	2.25	1.75	–	13	–	4596	–	–
Zhang et al.	2024	–	–	–	–	-0.074⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	2402⁽¹⁾	–	–
Celli et al.	2024	–	–	–	15	–	3679	–	–
Cavallo et al.	2024	2.65	1.77	–	15	0.080	–	–	–
Hunt & Reffert	2023	2.36	1.58	0.81	18	–	–	–	–
Just et al.	2023	–	–	–	19	–	7816	–	–
Jaehnig et al.	2021	2.39⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.34	1.77	–	11	–	–	–	0
Dias et al.	2021	2.25	1.75	–	13	-0.100	–	–	–
Cantat-Gaudin et al.	2020	2.20	1.69	–	15	–	–	–	–
Cantat-Gaudin & Anders	2020	2.34	–	–	–	–	–	–	–
Soubiran et al.	2018	2.34	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.34	–	–	–	–	–	–	–
Loktin & Popova	2017	2.09	1.77	–	12	–	–	–	–
Kharchenko et al.	2016	2.30	1.62	–	19	–	–	–	–
Kharchenko et al.	2013	2.30	1.62	–	19	-0.300	–	–	–
Gozha et al.	2012	2.08	–	–	12	-0.300	1047129	–	–
Kharchenko et al.	2012	2.30	1.62	–	19	-0.300	–	–	–
Piskunov et al.	2008	2.08	1.49	–	19	–	–	–	–
van den Bergh	2006	2.08	1.80	–	12	–	–	–	–
Kharchenko et al.	2005	2.08	1.49	–	19	–	–	–	–
Kharchenko et al.	2003	2.08	1.80	–	–	–	–	–	–
Chen et al.	2003	2.08	–	–	10	–	–	–	–
Dias et al.	2002	2.08	1.78	–	12	-0.300	–	–	–
Dambis	1999	1.87	1.75	–	3	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0247	0.6	34.61	56.85	0.38	-0.62	-1.18	–	0.16

💡 Note: The % column shows the percentage of members that NGC 869 shares with each listed object.

Visualization

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