PHOC 1

0.50 UTI

0.39

C_N

1.0

C_dens

0.5

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 39

Stellar density (N₅₀/rad) 5.3 [N/pc²]

C3 classification BB

C_N 0.39 Poorly populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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PHOC 1 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low 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 poorly studied in the literature.

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

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for PHOC 1 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–	126.997	-42.77	0.695	-5.713	4.801	19.756
Hu & Soubiran	2025	126.952	-42.766	–	–	–	–
Hunt & Reffert	2024	126.978	-42.762	0.699	-5.707	4.814	26.118
Cavallo et al.	2024	126.952	-42.766	0.697	–	–	–
Hunt & Reffert	2023	126.978	-42.762	0.699	-5.707	4.814	26.118
Hunt & Reffert	2021	126.992	-42.772	0.672	-5.74	4.795	–

💡 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–	1.425	0.935	0.89	338	-0.115	144	–	–
Hu & Soubiran	2025	–	–	–	–	-0.220⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	144⁽¹⁾	–	–
Cavallo et al.	2024	1.48	1.08	–	550	-0.010	–	–	–
Hunt & Reffert	2023	1.37	0.79	0.89	127	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14127	74.4	126.97	-42.72	0.69	-5.68	4.79	19.76	0.13

💡 Note: The % column shows the percentage of members that PHOC 1 shares with each listed object.

Visualization

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