OC 0027

0.17 UTI

0.5

C_N

1.0

C_dens

0.5

C_C3

0.25

C_lit

0.33

C_dup

N₅₀ (P>50% members) 51

Stellar density (N₅₀/rad) 21.9 [N/pc²]

C3 classification DA

C_N 0.5 Moderately populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 0.33 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0027 is a moderately populated, very dense 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 near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly 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 High extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for OC 0027 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–	274.949	-15.711	0.438	-0.131	-2.038	24.321
Hunt & Reffert	2024	274.96	-15.702	0.424	-0.138	-2.048	15.306
Cavallo et al.	2024	274.95	-15.703	0.423	–	–	–
Hunt & Reffert	2023	274.96	-15.702	0.424	-0.138	-2.048	15.306
Hao et al.	2022	274.947	-15.709	0.436	-0.099	-2.056	–

💡 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–	2.17	3.04	2.68	74	0.220	753	–	–
Hunt & Reffert	2024	–	–	–	–	–	753⁽¹⁾	–	–
Cavallo et al.	2024	2.18	3.04	–	275	0.270	–	–	–
Hunt & Reffert	2023	2.16	3.04	2.68	74	–	–	–	–
Hao et al.	2022	–	4.30	–	25	0.169	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
VVVX CL104	66.7	274.97	-15.72	0.42	-0.14	-2.03	24.32	0.49

💡 Note: The % column shows the percentage of members that OC 0027 shares with each listed object.

Visualization

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