OC 0549

0.26 UTI

0.28

C_N

0.16

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 28

Core radius and density 1.4 [pc], 0.8 [pc^-2]

C3 classification AB

C_N 0.28 Poorly populated
C_dens 0.16 Very loose
C_C3 0.75 High 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 0549 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is rarely studied in the literature.

Relatively close Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

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

Data

🔍 Search references for OC 0549 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–	158.315	-62.013	0.581	-5.605	5.337	60.53
Hunt & Reffert	2024	158.263	-62.006	0.572	-5.631	5.314	6.544
Cavallo et al.	2024	158.33	-62.019	0.573	–	–	–
Hunt & Reffert	2023	158.263	-62.006	0.572	-5.631	5.314	6.544
Hao et al.	2022	158.302	-62.031	0.584	-5.657	5.364	–

💡 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–	1.65	0.665	0.36	84	0.070	192	–	–
Hunt & Reffert	2024	1.65	0.57	0.36	118	–	192⁽¹⁾	–	–
Cavallo et al.	2024	1.54	0.76	–	51	0.000	–	–	–
Hunt & Reffert	2023	1.65	0.57	0.36	118	–	–	–	–
Hao et al.	2022	–	4.18	–	50	0.140	–	–	–

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

Visualization

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