Trumpler 16

0.97 UTI

0.84

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 332

Stellar density (N₅₀/rad) 62.1 [N/pc²]

C3 classification AA

C_N 0.84 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

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

Overview

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Trumpler 16 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.

Relatively close Moderate extinction Massive Near-solar metallicity Very young

Palma et al. (2025)
Part of multiple system G21, along with ASCC_62, Gulliver_52, NGC_3496 and Collinder_228.

Cavallo et al. (2024)
Silver sample.

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

Data

🔍 Search references for Trumpler 16 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–	161.256	-59.715	0.403	-6.889	2.586	-0.073
Almeida et al.	2025	161.25	-59.694	–	–	–	–
Hunt & Reffert	2024	161.265	-59.697	0.402	-6.908	2.606	-2.885
Celli et al.	2024	161.253	-59.7	–	–	–	–
Cavallo et al.	2024	161.236	-59.736	0.403	–	–	–
Hunt & Reffert	2023	161.265	-59.697	0.402	-6.908	2.606	-2.885
Jaehnig et al.	2021	161.236	-59.708	0.416	-6.88	2.556	–
Rain et al.	2021	161.253	-59.7	0.389	-6.864	2.509	–
Dias et al.	2021	161.25	-59.694	0.39	-6.903	2.521	–
Cantat-Gaudin et al.	2020	161.253	-59.7	0.389	-6.864	2.509	–
Cantat-Gaudin & Anders	2020	161.253	-59.7	0.389	-6.864	2.509	–
Cantat-Gaudin et al.	2018	161.253	-59.7	0.389	-6.864	2.509	–
Loktin & Popova	2017	161.295	-59.717	–	-6.94	1.41	-25.0
Dias et al.	2014	161.292	-59.717	–	-6.94	1.41	–
Gozha et al.	2012	161.292	-59.717	–	–	–	–
Piskunov et al.	2008	161.287	-59.713	–	–	–	–
Kharchenko et al.	2007	161.29	-59.72	–	0.12	–	-25.0
van den Bergh	2006	161.3	-59.717	–	–	–	–
Kharchenko et al.	2005	161.29	-59.72	–	-11.1	4.02	-25.0
Kharchenko et al.	2003	161.26	-59.72	–	-10.36	5.24	–
Dias et al.	2002	161.292	-59.717	–	-6.94	1.41	-22.78
Dambis	1999	161.292	-59.717	–	–	–	–

💡 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–	2.4	1.51	2.3	6	0.224	1114	–	0.0
Almeida et al.	2025	2.08	1.51	–	5	–	574	–	–
Hunt & Reffert	2024	–	–	–	–	–	1796⁽¹⁾	–	–
Celli et al.	2024	–	–	–	14	–	1107	–	–
Cavallo et al.	2024	1.49	1.53	–	21	0.100	–	–	–
Hunt & Reffert	2023	2.38	1.67	2.30	6	–	–	–	–
Jaehnig et al.	2021	2.40⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	2.40	1.12	–	1	–	–	–	0
Dias et al.	2021	2.08	1.51	–	5	0.348	–	–	–
Cantat-Gaudin et al.	2020	2.11	1.16	–	13	–	–	–	–
Cantat-Gaudin & Anders	2020	2.40	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.40	–	–	–	–	–	–	–
Loktin & Popova	2017	2.84	1.66	–	6	–	–	–	–
Gozha et al.	2012	3.90	–	–	5	–	1122	–	–
Piskunov et al.	2008	2.84	1.61	–	8	–	–	–	–
van den Bergh	2006	2.67	1.52	–	6	–	–	–	–
Kharchenko et al.	2005	2.84	1.61	–	8	–	–	–	–
Kharchenko et al.	2003	2.70	1.24	–	–	–	–	–	–
Dias et al.	2002	2.90	1.12	–	1	–	–	–	–
Dambis	1999	2.56	1.51	–	3	–	–	–	–

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

Visualization

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