OC 0037

0.28 UTI

0.29

C_N

0.37

C_dens

0.62

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 29

Core radius and density 0.4 [pc], 1.9 [pc^-2]

C3 classification CA

C_N 0.29 Poorly populated
C_dens 0.37 Loose
C_C3 0.62 Intermediate quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0037 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.

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

Relatively close High extinction Massive Metal-rich Young

Palma et al. (2025)
Classified as optical pair (not dynamically associated) P558, along with UBC_1026.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.81 (50th percentile), true positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.81 (50th percentile), true positive? (human-assigned).

Data

🔍 Search references for OC 0037 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–	278.105	-10.584	0.491	0.59	-0.214	31.982
Hunt & Reffert	2024	278.09	-10.594	0.489	0.592	-0.201	80.907
Cavallo et al.	2024	278.089	-10.593	0.489	–	–	–
Hunt & Reffert	2023	278.09	-10.594	0.489	0.592	-0.201	80.907
Hao et al.	2022	278.09	-10.57	0.522	0.646	-0.205	-10.361

💡 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–	1.92	4.95	2.53	43	0.598	1103	–	–
Hunt & Reffert	2024	1.92	4.95	2.53	36	–	1103⁽¹⁾	–	–
Cavallo et al.	2024	1.97	4.40	–	85	0.930	–	–	–
Hunt & Reffert	2023	1.92	4.95	2.53	36	–	–	–	–
Hao et al.	2022	–	5.12	–	50	0.265	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 43	48.3	278.09	-10.59	0.49	0.53	-0.17	167.41	0.05

💡 Note: The % column shows the percentage of members that OC 0037 shares with each listed object.

Visualization

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