Trumpler 19

(Collinder 243; MWSC 1924; OCL 843; ESO 169 07; FSR 1565)

1.0 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 1079

Radius (P>50% members) 5.9 [arcmin]

C_N 1.0 Very rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Trumpler 19 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

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

Relatively close Low extinction Massive Near-solar metallicity Old Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Trumpler 19 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	–	168.616	-57.565	0.394	-1.671	-1.216	-26.876
Li et al.	2025	168.623	-57.563	0.374	-1.675	-1.237	–
Hu & Soubiran	2025	168.627	-57.567	–	–	–	–
Wei et al.	2025	168.639	-57.561	0.391	-1.668	-1.219	–
Carrasco-Varela et al.	2025	168.799	-57.679	–	–	–	–
Almeida et al.	2025	168.619	-57.56	–	–	–	–
Hunt & Reffert	2024	168.625	-57.564	0.397	-1.661	-1.217	-27.974
Cavallo et al.	2024	168.627	-57.567	0.396	–	–	–
Hunt & Reffert	2023	168.625	-57.564	0.397	-1.661	-1.217	-27.974
Almeida et al.	2023	168.61	-57.574	–	–	–	–
Just et al.	2023	168.555	-57.531	–	–	–	–
Dias et al.	2021	168.619	-57.56	0.372	-1.674	-1.228	-26.414
Cantat-Gaudin et al.	2020	168.623	-57.563	0.374	-1.675	-1.237	–
Cantat-Gaudin & Anders	2020	168.623	-57.563	0.374	-1.675	-1.237	–
Soubiran et al.	2018	168.623	-57.563	–	–	–	-26.38
Bica et al.	2019	168.602	-57.549	–	–	–	–
Cantat-Gaudin et al.	2018	168.623	-57.563	0.374	-1.675	-1.237	–
Kharchenko et al.	2016	168.555	-57.531	–	–	–	–
Dias et al.	2014	168.583	-57.551	–	-4.34	0.71	–
Kharchenko et al.	2013	168.562	-57.535	–	-13.35	3.93	–
Glushkova et al.	2010	168.584	-57.551	–	–	–	–
Dias et al.	2002	168.583	-57.551	–	-4.49	0.62	–

💡 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]	Bfr	BSS
Li et al.	2025	2.40	0.76	–	3749	-0.157	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.270*	–	–	–
Wei et al.	2025	2.28	0.71	–	3802	0.000	5409	0.64	–
Carrasco-Varela et al.	2025	2.34	0.63	–	4130	0.000	–	–	0.12*
Almeida et al.	2025	2.34	0.63	–	4130	–	3147	–	–
Hunt & Reffert	2024	–	–	–	–	–	3452*	–	–
Cavallo et al.	2024	2.21	0.69	–	3467	0.000	–	–	–
Hunt & Reffert	2023	2.36	0.43	0.88	2193	–	–	–	–
Almeida et al.	2023	2.36	0.63	–	3890	0.039	2684*	0.66	–
Just et al.	2023	–	–	–	4467	–	406	–	–
Dias et al.	2021	2.34	0.63	–	4130	-0.015	–	–	–
Cantat-Gaudin et al.	2020	2.51	0.37	–	4898	–	–	–	–
Cantat-Gaudin & Anders	2020	2.48	–	–	–	–	–	–	–
Soubiran et al.	2018	2.48	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.48	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.97	0.29	–	4467	–	–	–	–
Kharchenko et al.	2013	1.97	0.29	–	4467	–	–	–	–
Glushkova et al.	2010	1.90	0.25	–	4467	–	–	–	–
Dias et al.	2002	1.90	0.25	–	4467	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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