FoF 1375

0.23 UTI

0.43

C_N

0.1

C_dens

0.38

C_C3

0.13

C_lit

1.0

C_dup

N_m (P>50%) 43

Core radius and density 2.5 [pc], 0.5 [pc^-2]

C3 classification BC

C_N 0.43 Poorly populated
C_dens 0.1 Very loose
C_C3 0.38 Low quality
C_lit 0.13 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FoF 1375 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a significant percentage of members with 2 later reported entries. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for FoF 1375 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–	91.036	28.046	0.218	0.385	-1.086	33.919
Hu & Soubiran	2025	91.052	28.054	–	–	–	–
Zhang et al.	2024	91.038	28.047	–	–	–	–
Hunt & Reffert	2024	91.038	28.047	0.207	0.402	-1.012	28.661
Cavallo et al.	2024	91.052	28.054	0.205	–	–	–
Hunt & Reffert	2023	91.038	28.047	0.207	0.402	-1.012	28.661
Liu & Pang	2019	91.042	28.045	0.259	0.264	-1.593	–

💡 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–	4.49	0.55	1.67	534	-0.165	532	–	–
Hu & Soubiran	2025	–	–	–	–	-0.270⁽⁵⁾	–	–	–
Zhang et al.	2024	–	–	–	–	-0.305⁽¹⁾	–	–	–
Hunt & Reffert	2024	4.49	0.55	1.67	507	–	532⁽¹⁾	–	–
Cavallo et al.	2024	3.55	0.57	–	851	-0.060	–	–	–
Hunt & Reffert	2023	4.49	0.55	1.67	507	–	–	–	–
Liu & Pang	2019	–	–	–	562	0.500	–	–	–

(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 434	51.2	91.04	28.06	0.19	0.41	-1.0	34.56	0.14
CWWDL 11962	2.3	90.8	28.41	0.27	0.38	-1.39	51.7	0.01

💡 Note: The % column shows the percentage of members that FoF 1375 shares with each listed object.

Visualization

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