FoF 947

(LP 947)

0.70 UTI

0.75

C_N

1.0

C_dens

0.75

C_C3

0.5

C_lit

1.0

C_dup

N₅₀ (P>50% members) 108

Stellar density (N₅₀/rad) 12.1 [N/pc²]

C3 classification AB

C_N 0.75 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 947 is a rich, very 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, old cluster, but with a large variance across recent sources for the metallicity 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 Old

Palma et al. (2025)
Classified as optical pair P255, along with ESO_494-09.

Cavallo et al. (2024)
Gold sample.

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Data

🔍 Search references for FoF 947 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–	118.609	-27.516	0.331	-4.249	3.716	52.768
Li et al.	2025	118.61	-27.518	0.333	-4.264	3.683	–
Hu & Soubiran	2025	118.62	-27.518	–	–	–	–
Almeida et al.	2025	118.618	-27.529	–	–	–	–
Hunt & Reffert	2024	118.61	-27.512	0.33	-4.25	3.697	55.145
Cavallo et al.	2024	118.62	-27.518	0.329	–	–	–
Hunt & Reffert	2023	118.61	-27.512	0.33	-4.25	3.697	55.145
Dias et al.	2021	118.618	-27.529	0.333	-4.27	3.693	52.771
Cantat-Gaudin et al.	2020	118.61	-27.518	0.333	-4.264	3.683	–
Liu & Pang	2019	118.604	-27.529	0.34	-4.259	3.725	–

💡 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–	2.7	1.37	1.18	1455	-0.090	554	–	–
Li et al.	2025	2.79	1.44	–	1503	-0.146	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.090⁽⁵⁾	–	–	–
Almeida et al.	2025	2.62	1.50	–	1455	–	396	–	–
Hunt & Reffert	2024	–	–	–	–	–	712⁽¹⁾	–	–
Cavallo et al.	2024	2.70	1.15	–	1585	0.290	–	–	–
Hunt & Reffert	2023	2.70	1.30	1.18	1197	–	–	–	–
Dias et al.	2021	2.62	1.50	–	1455	-0.056	–	–	–
Cantat-Gaudin et al.	2020	2.88	1.22	–	1349	–	–	–	–
Liu & Pang	2019	–	–	–	2510	-0.750	–	–	–

(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 234	100.0	118.61	-27.52	0.33	-4.23	3.71	53.03	0.2

💡 Note: The % column shows the percentage of members that FoF 947 shares with each listed object.

Visualization

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