OC 0373

0.14 UTI

0.44

C_N

0.07

C_dens

0.25

C_C3

0.06

C_lit

0.8

C_dup

N_m (P>50%) 44

Core radius and density 3.9 [pc], 0.4 [pc^-2]

C3 classification DB

C_N 0.44 Poorly populated
C_dens 0.07 Very loose
C_C3 0.25 Low quality
C_lit 0.06 Rarely studied
C_dup 0.8 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0373 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is rarely studied in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.8) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.61 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.61 (50th percentile).

Data

🔍 Search references for OC 0373 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–	105.905	-9.393	0.335	-1.22	0.851	–
Hunt & Reffert	2024	105.911	-9.445	0.348	-1.204	0.876	–
Cavallo et al.	2024	106.108	-9.294	0.348	–	–	–
Hunt & Reffert	2023	105.911	-9.445	0.348	-1.204	0.876	–
Hao et al.	2022	105.901	-9.406	0.321	-1.269	0.857	–

💡 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–	3.46	1.9	2.07	20	0.010	244	–	–
Hunt & Reffert	2024	3.46	1.99	2.07	29	–	244⁽¹⁾	–	–
Cavallo et al.	2024	2.68	1.81	–	10	-0.230	–	–	–
Hunt & Reffert	2023	3.46	1.99	2.07	29	–	–	–	–
Hao et al.	2022	–	0.51	–	6	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
CWWDL 623	95.5	105.89	-9.37	0.34	-1.24	0.86	-181.4	0.09
FSR 1169	20.5	105.75	-9.28	0.36	-1.27	0.9	–	0.12

💡 Note: The % column shows the percentage of members that OC 0373 shares with each listed object.

Visualization

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