NGC 3105

(Collinder 214; VDBH 82; MWSC 1742; OCL 798; vdBergh-Hagen 82; ESO 167 14; FSR 1519)

0.92 UTI

0.77

C_N

1.0

C_dens

1.0

C_C3

0.93

C_lit

1.0

C_dup

N_m (P>50%) 149

Core radius and density 1.5 [pc], 5.5 [pc^-2]

C3 classification AA

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.93 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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NGC 3105 is a rich, very dense object of very high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is very well-studied in the literature.

Very distant High extinction Massive Near-solar metallicity Young

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: 0.65 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.65 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1884, e_all=0.0564.

Ahumada & Lapasset (2007)
The dereddened colour-magnitude diagram of suspected members in (1977A&A....59..141F) was examined.

Data

🔍 Search references for NGC 3105 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–	150.17	-54.79	0.117	-4.193	2.698	47.052
Almeida et al.	2025	150.166	-54.789	–	–	–	–
Hunt & Reffert	2024	150.173	-54.789	0.112	-4.206	2.711	48.591
Celli et al.	2024	150.169	-54.79	–	–	–	–
Cavallo et al.	2024	150.163	-54.799	0.113	–	–	–
Hunt & Reffert	2023	150.173	-54.789	0.112	-4.206	2.711	48.591
Just et al.	2023	150.174	-54.777	–	–	–	–
Jaehnig et al.	2021	150.171	-54.788	0.116	-4.164	2.7	–
Rain et al.	2021	150.169	-54.79	0.104	-4.161	2.714	–
Dias et al.	2021	150.166	-54.789	0.114	-4.158	2.703	45.405
Cantat-Gaudin et al.	2020	150.169	-54.79	0.104	-4.161	2.714	–
Cantat-Gaudin & Anders	2020	150.169	-54.79	0.104	-4.161	2.714	–
Soubiran et al.	2018	150.169	-54.79	–	–	–	45.27
Bica et al.	2019	150.177	-54.786	–	–	–	–
Cantat-Gaudin et al.	2018	150.169	-54.79	0.104	-4.161	2.714	–
Dias et al.	2018	–	–	–	-2.95	0.89	–
Loktin & Popova	2017	150.165	-54.788	–	-4.64	-2.02	–
Sampedro et al.	2017	150.162	-54.788	–	-6.14	-0.22	–
Kharchenko et al.	2016	150.174	-54.777	–	–	–	–
Dias et al.	2014	150.163	-54.788	–	-5.77	0.68	–
Kharchenko et al.	2013	150.18	-54.78	–	-4.64	-2.02	–
Bukowiecki et al.	2011	150.171	-54.789	–	–	–	–
Ahumada & Lapasset	2007	150.175	-54.783	–	–	–	–
van den Bergh	2006	150.2	-54.767	–	–	–	–
Dias et al.	2002	150.162	-54.788	–	-4.64	-2.02	–
Dambis	1999	150.2	-54.767	–	–	–	–
Lynga	1987	150.187	-54.778	–	–	–	–
van den Bergh & Hagen	1975	149.75	-54.533	–	–	–	–
Sulentic et al.	1973	150.172	-54.771	–	–	–	–

💡 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–	7.54	3.12	2.11	25	-0.169	1828	–	0
Almeida et al.	2025	7.04	2.91	–	44	–	1828	–	–
Hunt & Reffert	2024	7.80	3.24	2.11	43	–	5521⁽¹⁾	–	–
Celli et al.	2024	–	–	–	22	–	909	–	–
Cavallo et al.	2024	4.25	3.06	–	200	-0.240	–	–	–
Hunt & Reffert	2023	7.81	3.24	2.11	43	–	–	–	–
Just et al.	2023	–	–	–	25	–	12246	–	–
Jaehnig et al.	2021	7.94⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	7.54	3.00	–	20	–	–	–	0
Dias et al.	2021	7.04	2.91	–	44	-0.097	–	–	–
Cantat-Gaudin et al.	2020	8.05	2.66	–	22	–	–	–	–
Kounkel et al.	2020	4.95	2.93	–	74	–	–	–	–
Cantat-Gaudin & Anders	2020	7.54	–	–	–	–	–	–	–
Soubiran et al.	2018	7.54	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	7.54	–	–	–	–	–	–	–
Loktin & Popova	2017	4.88	3.12	–	17	–	–	–	–
Kharchenko et al.	2016	10.30	4.27	–	25	–	–	–	–
Kharchenko et al.	2013	10.30	4.27	–	25	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	1621	–	–
Bukowiecki et al.	2011	8.71⁽¹⁾	3.25	–	25	–	–	–	–
Ahumada & Lapasset	2007	–	3.12	–	17	–	–	–	0
van den Bergh	2006	4.88	3.12	–	17	–	–	–	–
Dias et al.	2002	8.53	3.00	–	20	–	–	–	–
Dambis	1999	6.17	3.31	–	20	–	–	–	–
Lynga	1987	8.00	–	–	13	–	–	–	–

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

Visualization

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