FSR 0261

(MWSC 3423)

0.70 UTI

0.85

C_N

1.0

C_dens

0.75

C_C3

0.45

C_lit

1.0

C_dup

N₅₀ (P>50% members) 360

Stellar density (N₅₀/rad) 12.3 [N/pc²]

C3 classification AB

C_N 0.85 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.45 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

FSR 0261 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, metal-rich, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.58 kpc) differs significantly from the median photometric distance (~0.85 kpc).

Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.

Close High extinction Massive Metal-rich Intermediate age

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for FSR 0261 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	313.44	43.106	0.279	-1.977	-4.053	-40.355
Hunt & Reffert	2024	313.448	43.106	0.302	-1.941	-4.067	-58.571
Cavallo et al.	2024	313.431	43.109	0.301	–	–	–
Hunt & Reffert	2023	313.448	43.106	0.302	-1.941	-4.067	-58.571
Just et al.	2023	313.442	43.111	–	–	–	–
Kharchenko et al.	2016	313.442	43.111	–	–	–	–
Kharchenko et al.	2013	313.447	43.115	–	-1.7	-3.6	–
Froebrich et al.	2007	313.45	43.11	–	–	–	–
Dias et al.	2002	313.45	43.11	–	-1.7	-3.6	–

💡 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–	0.85	4.32	2.76	188	0.660	1104	–	–
Hunt & Reffert	2024	–	–	–	–	–	2168⁽¹⁾	–	–
Cavallo et al.	2024	3.25	5.21	–	78	0.660	–	–	–
Hunt & Reffert	2023	2.88	5.87	2.76	224	–	–	–	–
Just et al.	2023	–	–	–	188	–	39	–	–
Kharchenko et al.	2016	0.85	4.32	–	188	–	–	–	–
Kharchenko et al.	2013	0.85	4.32	–	188	–	–	–	–
Dias et al.	2002	0.85	4.32	–	188	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 1302	16.1	313.44	43.1	0.3	-1.92	-4.08	-41.09	0.0

💡 Note: The % column shows the percentage of members that FSR 0261 shares with each listed object.

Visualization

ℹ️

1 2