OC 0684

0.07 UTI

0.0

C_N

0.18

C_dens

0.75

C_C3

0.06

C_lit

0.32

C_dup

N_m (P>50%) 22

Core radius and density 0.8 [pc], 0.9 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.18 Very loose
C_C3 0.75 High quality
C_lit 0.06 Rarely studied
C_dup 0.32 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0684 is a sparse, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It is rarely studied in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Very young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.87 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.87 (50th percentile).

Data

🔍 Search references for OC 0684 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–	256.794	-35.731	0.906	1.242	-2.354	-1.291
Hunt & Reffert	2024	256.773	-35.804	0.897	1.253	-2.272	13.018
Cavallo et al.	2024	256.629	-35.392	0.898	–	–	–
Hunt & Reffert	2023	256.773	-35.804	0.897	1.253	-2.272	13.018
Hao et al.	2022	256.809	-35.796	0.901	1.254	-2.399	–

💡 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–	1.05	1.76	2.65	6	0.045	1304	–	–
Hunt & Reffert	2024	1.05	1.68	2.65	6	–	1304⁽¹⁾	–	–
Cavallo et al.	2024	1.05	1.84	–	9	-0.090	–	–	–
Hunt & Reffert	2023	1.05	1.68	2.65	6	–	–	–	–
Hao et al.	2022	–	2.46	–	5	0.180	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Gulliver 29	68.0	256.67	-35.26	0.9	1.28	-2.2	5.0	0.5

💡 Note: The % column shows the percentage of members that OC 0684 shares with each listed object.

Visualization

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