FoF 2139

(LP 2139)

0.72 UTI

0.84

C_N

1.0

C_dens

0.75

C_C3

0.5

C_lit

1.0

C_dup

N₅₀ (P>50% members) 346

Stellar density (N₅₀/rad) 28.8 [N/pc²]

C3 classification AB

C_N 0.84 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.5 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FoF 2139 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.

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

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for FoF 2139 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–	67.685	46.294	0.897	0.272	-4.263	14.554
Li et al.	2025	67.683	46.302	0.87	0.308	-4.233	–
Zhang et al.	2024	67.691	46.316	–	–	–	–
Hunt & Reffert	2024	67.691	46.316	0.905	0.26	-4.271	19.58
Cavallo et al.	2024	67.601	46.331	0.906	–	–	–
Hunt & Reffert	2023	67.691	46.316	0.905	0.26	-4.271	19.58
He et al.	2022	67.686	46.304	0.906	0.27	-4.27	–
Tarricq et al.	2022	67.659	46.315	0.889	0.257	-4.263	–
Cantat-Gaudin et al.	2020	67.683	46.302	0.87	0.308	-4.233	–
Liu & Pang	2019	67.683	46.299	0.888	0.332	-4.22	–

💡 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–	1.06	1.98	2.55	269	-0.126	911	–	–
Li et al.	2025	0.84	0.94	–	772	-0.123	–	–	–
Zhang et al.	2024	–	–	–	–	-0.129⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	911⁽¹⁾	–	–
Cavallo et al.	2024	1.27	2.34	–	72	0.070	–	–	–
Hunt & Reffert	2023	1.05	1.98	2.55	135	–	–	–	–
He et al.	2022	–	2.50	–	40	–	–	–	–
Tarricq et al.	2022	1.06	–	–	288	–	–	–	–
Cantat-Gaudin et al.	2020	1.10	1.68	–	269	–	–	–	–
Liu & Pang	2019	–	–	–	331	-0.250	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 195	80.6	67.68	46.3	0.9	0.27	-4.26	11.47	0.0

💡 Note: The % column shows the percentage of members that FoF 2139 shares with each listed object.

Visualization

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