Roslund 7

(MWSC 3416; OCL 187)

0.84 UTI

0.75

C_N

0.69

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 108

Radius (P>50% members) 15.0 [arcmin]

C_N 0.75 Rich
C_dens 0.69 Moderately dense
C_C3 0.75 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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Roslund 7 is a rich, moderately dense object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low 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 Low 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 Roslund 7 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	–	313.196	37.891	0.781	1.734	-0.395	-14.414
Li et al.	2025	313.196	37.847	0.78	1.729	-0.36	–
Almeida et al.	2025	313.224	37.829	–	–	–	–
Zhang et al.	2024	313.213	37.92	–	–	–	–
Hunt & Reffert	2024	313.213	37.92	0.776	1.707	-0.406	-16.19
Cavallo et al.	2024	313.224	37.835	0.777	–	–	–
Hunt & Reffert	2023	313.213	37.92	0.776	1.707	-0.406	-16.19
Almeida et al.	2023	313.198	37.807	–	–	–	–
Just et al.	2023	313.089	37.897	–	–	–	–
Tarricq et al.	2022	313.126	37.939	0.777	1.749	-0.404	–
Dias et al.	2021	313.224	37.829	0.778	1.719	-0.354	–
Cantat-Gaudin et al.	2020	313.196	37.847	0.78	1.729	-0.36	–
Cantat-Gaudin & Anders	2020	313.196	37.847	0.78	1.729	-0.36	–
Soubiran et al.	2018	313.196	37.847	–	–	–	-12.72
Bica et al.	2019	313.125	38.065	–	–	–	–
Cantat-Gaudin et al.	2018	313.196	37.847	0.78	1.729	-0.36	–
Kharchenko et al.	2016	313.089	37.897	–	–	–	–
Dias et al.	2014	313.033	37.896	–	-3.55	-5.75	–
Kharchenko et al.	2013	313.095	37.9	–	-0.05	-0.11	-22.0
Gozha et al.	2012	313.033	37.896	–	–	–	–
Piskunov et al.	2008	313.092	37.892	–	–	–	–
Kharchenko et al.	2007	313.03	37.9	–	0.43	–	-22.0
Piskunov et al.	2007	313.092	37.892	–	–	–	–
Kharchenko et al.	2005	313.09	37.9	–	1.2	0.42	–
Kharchenko et al.	2003	313.09	37.93	–	0.5	-0.4	–

💡 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	1.12	0.66	–	664	-0.041	–	–	–
Almeida et al.	2025	1.19	0.86	–	321	–	442	–	–
Zhang et al.	2024	–	–	–	–	-0.186*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	411*	–	–
Cavallo et al.	2024	1.31	0.89	–	275	0.480	–	–	–
Hunt & Reffert	2023	1.22	0.94	1.93	175	–	–	–	–
Almeida et al.	2023	1.22	1.13	–	108	-0.009	617*	0.58	–
Just et al.	2023	–	–	–	398	–	61	–	–
Tarricq et al.	2022	1.17	–	–	162	–	–	–	–
Dias et al.	2021	1.19	0.86	–	321	0.171	–	–	–
Cantat-Gaudin et al.	2020	1.20	0.49	–	126	–	–	–	–
Cantat-Gaudin & Anders	2020	1.24	–	–	–	–	–	–	–
Soubiran et al.	2018	1.24	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.24	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.74	0.62	–	398	–	–	–	–
Kharchenko et al.	2013	0.74	0.62	–	398	–	–	–	–
Gozha et al.	2012	0.57	–	–	468	–	324	–	–
Piskunov et al.	2008	0.70	0.62	–	468	–	312*	–	–
Piskunov et al.	2007	0.70	0.62	–	468	–	124	–	–
Kharchenko et al.	2005	0.70	0.62	–	468	–	–	–	–
Kharchenko et al.	2003	0.57	0.46	–	–	–	–	–	–

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

Visualization

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