Czernik 27

(OCL 526; MWSC 1078)

0.73 UTI

0.72

C_N

0.57

C_dens

0.75

C_C3

0.81

C_lit

1.0

C_dup

N_m (P>50%) 93

Core radius and density 1.9 [pc], 2.8 [pc^-2]

C3 classification AB

C_N 0.72 Moderately populated
C_dens 0.57 Moderately dense
C_C3 0.75 High quality
C_lit 0.81 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Czernik 27 is a moderately populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Distant Low extinction Near-solar metallicity Old Contains BSS

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2039, e_all=0.1825.

Data

🔍 Search references for Czernik 27 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–	105.832	6.384	0.202	-0.49	-1.421	57.059
Li et al.	2025	105.83	6.382	0.221	-0.505	-1.395	–
Hu & Soubiran	2025	105.838	6.375	–	–	–	–
Almeida et al.	2025	105.827	6.386	–	–	–	–
Zhang et al.	2024	105.833	6.383	–	–	–	–
Hunt & Reffert	2024	105.833	6.383	0.209	-0.475	-1.427	58.966
Cavallo et al.	2024	105.838	6.375	0.208	–	–	–
Hunt & Reffert	2023	105.833	6.383	0.209	-0.475	-1.427	58.966
Almeida et al.	2023	105.828	6.387	–	–	–	–
Jadhav & Subramaniam	2021	105.83	6.382	–	–	–	–
Dias et al.	2021	105.827	6.386	0.209	-0.547	-1.393	–
Cantat-Gaudin et al.	2020	105.83	6.382	0.221	-0.505	-1.395	–
Sánchez et al.	2020	105.8	6.417	–	-0.61	-1.587	–
Zhong et al.	2020	105.83	6.382	–	-0.505	-1.395	56.534
Cantat-Gaudin & Anders	2020	105.83	6.382	0.221	-0.505	-1.395	–
Bossini et al.	2019	105.83	6.382	–	–	–	–
Soubiran et al.	2018	105.83	6.382	–	–	–	41.33
Bica et al.	2019	105.82	6.382	–	–	–	–
Cantat-Gaudin et al.	2018	105.83	6.382	0.221	-0.505	-1.395	–
Loktin & Popova	2017	105.825	6.413	–	-2.177	-0.59	–
Sampedro et al.	2017	105.8	6.417	–	–	–	–
Dias et al.	2014	105.8	6.417	–	-2.32	-1.94	–
Gozha et al.	2012	105.8	6.417	–	–	–	–
Bukowiecki et al.	2011	105.825	6.391	–	–	–	–
Dias et al.	2002	105.8	6.417	–	-2.32	-1.94	–
Lynga	1987	105.797	6.404	–	–	–	–

💡 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–	4.06	0.44	0.36	1074	-0.266	572	0.64	1
Li et al.	2025	4.63	0.42	–	1026	-0.018	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.250⁽⁵⁾	–	–	–
Almeida et al.	2025	3.97	0.60	–	1159	–	322	–	–
Zhang et al.	2024	–	–	–	–	-0.220⁽¹⁾	–	–	–
Hunt & Reffert	2024	4.06	0.12	0.36	934	–	572⁽¹⁾	–	–
Cavallo et al.	2024	3.21	1.14	–	977	-0.730	–	–	–
Hunt & Reffert	2023	4.06	0.12	0.36	933	–	–	–	–
Almeida et al.	2023	4.06	0.39	–	1268	-0.162	595⁽¹⁾	0.64	–
Jadhav & Subramaniam	2021	4.31	0.44	–	871	–	466	–	1⁽¹⁾
Dias et al.	2021	3.97	0.60	–	1159	-0.281	–	–	–
Cantat-Gaudin et al.	2020	4.31	0.44	–	871	–	–	–	–
Kounkel et al.	2020	4.33	0.68	–	794	–	–	–	–
Zhong et al.	2020	4.00⁽¹⁾	0.54	–	9065	-0.188	–	–	–
Cantat-Gaudin & Anders	2020	4.00	–	–	–	–	–	–	–
Bossini et al.	2019	3.92	0.54	–	1161	-0.380	–	–	–
Soubiran et al.	2018	4.00	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.00	–	–	–	–	–	–	–
Loktin & Popova	2017	6.08	0.60	–	575	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	713	–	–
Gozha et al.	2012	4.29	–	–	1122	-0.380	–	–	–
Bukowiecki et al.	2011	3.84⁽¹⁾	0.00	–	1122	–	–	–	–
Dias et al.	2002	4.29	0.22	–	1122	-0.380	–	–	–

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

Visualization

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