Collinder 103

(NGC 2254; FSR 1001; MWSC 924; OCL 500; FoF 191)

0.91 UTI

0.8

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 240

Stellar density (N₅₀/rad) 69.7 [N/pc²]

C3 classification AB

C_N 0.8 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 103 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Collinder 103 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–	98.948	7.67	0.392	-0.186	-0.933	57.325
Li et al.	2025	98.949	7.671	0.364	-0.127	-0.944	–
Almeida et al.	2025	98.947	7.665	–	–	–	–
Hunt & Reffert	2024	98.949	7.672	0.387	-0.177	-0.937	52.489
Cavallo et al.	2024	98.951	7.672	0.391	–	–	–
Hunt & Reffert	2023	98.949	7.672	0.387	-0.177	-0.937	52.489
Just et al.	2023	98.934	7.671	–	–	–	–
Dias et al.	2021	98.947	7.665	0.362	-0.148	-0.948	–
Cantat-Gaudin et al.	2020	98.949	7.671	0.364	-0.127	-0.944	–
Sánchez et al.	2020	98.954	7.673	–	-0.065	-0.936	–
Cantat-Gaudin & Anders	2020	98.949	7.671	0.364	-0.127	-0.944	–
Liu & Pang	2019	98.948	7.663	0.351	-0.151	-0.928	–
Soubiran et al.	2018	98.949	7.671	–	–	–	52.64
Bica et al.	2019	98.945	7.677	–	–	–	–
Cantat-Gaudin et al.	2018	98.949	7.671	0.364	-0.127	-0.944	–
Loktin & Popova	2017	98.955	7.674	–	-2.116	-1.859	–
Kharchenko et al.	2016	98.934	7.671	–	–	–	–
Dias et al.	2014	98.954	7.673	–	0.53	1.78	–
Kharchenko et al.	2013	98.941	7.67	–	-2.09	-1.46	–
Froebrich et al.	2007	98.954	7.666	–	–	–	–
van den Bergh	2006	99.0	7.667	–	–	–	–
Dias et al.	2002	98.954	7.673	–	0.53	1.78	–

💡 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–	2.51	1.37	1.96	347	0.098	766	–	–
Li et al.	2025	2.31	1.29	–	616	-0.054	–	–	–
Almeida et al.	2025	2.12	1.72	–	108	–	896	–	–
Hunt & Reffert	2024	–	–	–	–	–	766⁽¹⁾	–	–
Cavallo et al.	2024	2.62	1.56	–	380	0.250	–	–	–
Hunt & Reffert	2023	2.32	1.37	1.96	321	–	–	–	–
Just et al.	2023	–	–	–	473	–	138	–	–
Dias et al.	2021	2.12	1.72	–	108	-0.147	–	–	–
Cantat-Gaudin et al.	2020	2.62	1.35	–	347	–	–	–	–
Cantat-Gaudin & Anders	2020	2.55	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	537	0.250	–	–	–
Soubiran et al.	2018	2.55	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.55	–	–	–	–	–	–	–
Loktin & Popova	2017	2.47	1.24	–	224	–	–	–	–
Kharchenko et al.	2016	2.93	1.62	–	473	–	–	–	–
Kharchenko et al.	2013	2.93	1.62	–	473	–	–	–	–
van den Bergh	2006	2.36	1.24	–	204	–	–	–	–
Dias et al.	2002	2.36	1.23	–	203	–	–	–	–

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

Visualization

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