Collinder 104

(MWSC 930)

0.70 UTI

0.62

C_N

1.0

C_dens

0.75

C_C3

0.55

C_lit

1.0

C_dup

N₅₀ (P>50% members) 75

Stellar density (N₅₀/rad) 7.2 [N/pc²]

C3 classification AB

C_N 0.62 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.55 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 104 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close 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 and metallicity parameters (see Parameters). It is moderately studied in the literature.

Note: This object shares a small percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G40, along with HSC_1641, CWNU_158, HSC_1636 and CWNU_1281.

Cavallo et al. (2024)
Gold sample.

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

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Data

🔍 Search references for Collinder 104 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–	99.187	4.79	0.614	-1.418	0.602	36.18
Almeida et al.	2025	99.157	4.816	–	–	–	–
Zhang et al.	2024	99.187	4.71	–	–	–	–
Hunt & Reffert	2024	99.187	4.71	0.62	-1.391	0.651	30.638
Cavallo et al.	2024	99.288	4.838	0.62	–	–	–
Hunt & Reffert	2023	99.187	4.71	0.62	-1.391	0.651	30.638
Just et al.	2023	99.105	4.774	–	–	–	–
Dias et al.	2021	99.157	4.816	0.514	-1.23	0.507	–
Loktin & Popova	2017	99.12	4.818	–	-0.206	-0.584	6.33
Kharchenko et al.	2016	99.105	4.774	–	–	–	–
Dias et al.	2014	99.125	4.817	–	-0.03	-1.03	6.33
Kharchenko et al.	2013	99.112	4.773	–	-1.99	-1.74	–
Dias et al.	2002	99.125	4.817	–	-0.03	-1.03	6.33

💡 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–	1.81	2.275	2.09	166	-0.104	307	–	–
Almeida et al.	2025	1.60	2.10	–	16	–	378	–	–
Zhang et al.	2024	–	–	–	–	0.080⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	307⁽¹⁾	–	–
Cavallo et al.	2024	1.45	1.79	–	19	-0.480	–	–	–
Hunt & Reffert	2023	1.51	1.35	2.09	14	–	–	–	–
Just et al.	2023	–	–	–	316	–	83	–	–
Dias et al.	2021	1.60	2.10	–	16	-0.104	–	–	–
Loktin & Popova	2017	2.42	2.45	–	166	–	–	–	–
Kharchenko et al.	2016	2.02	2.58	–	316	–	–	–	–
Kharchenko et al.	2013	2.02	2.58	–	316	–	–	–	–
Dias et al.	2002	2.02	2.58	–	316	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14136	24.0	99.16	4.85	0.64	-1.43	0.63	–	0.04
Collinder 107	20.0	99.25	4.9	0.61	-1.36	0.65	–	0.45

💡 Note: The % column shows the percentage of members that Collinder 104 shares with each listed object.

Visualization

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