FSR 0508

(SAI 9; MWSC 66)

0.61 UTI

0.56

C_N

0.48

C_dens

0.75

C_C3

0.63

C_lit

1.0

C_dup

N_m (P>50%) 63

Core radius and density 1.9 [pc], 2.4 [pc^-2]

C3 classification AB

C_N 0.56 Moderately populated
C_dens 0.48 Loose
C_C3 0.75 High quality
C_lit 0.63 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0508 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-poor, old cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Very distant High extinction Metal-poor Old Contains BSS

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.06 (50th percentile), false positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.06 (50th percentile), false positive? (human-assigned).

Data

🔍 Search references for FSR 0508 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–	10.479	64.963	0.194	-2.329	-0.591	-118.167
Cui et al.	2025	10.474	64.964	0.16	-2.32	-0.64	–
Hunt & Reffert	2024	10.47	64.957	0.187	-2.332	-0.618	-117.346
Cavallo et al.	2024	10.487	64.969	0.186	–	–	–
He et al.	2023	10.474	64.964	0.162	-2.323	-0.64	-118.17
Hunt & Reffert	2023	10.47	64.957	0.187	-2.332	-0.618	-117.346
Just et al.	2023	10.463	64.953	–	–	–	–
Sánchez et al.	2020	10.492	64.981	–	-2.405	-0.853	–
Bica et al.	2019	10.468	64.983	–	–	–	–
Sampedro et al.	2017	10.492	64.981	–	-1.53	-0.47	–
Kharchenko et al.	2016	10.463	64.953	–	–	–	–
Dias et al.	2014	10.492	64.981	–	-0.68	0.05	–
Kharchenko et al.	2013	10.473	64.956	–	2.23	-0.07	–
Kharchenko et al.	2012	10.473	64.956	–	1.72	-0.47	–
Glushkova et al.	2010	10.466	64.981	–	–	–	–
Froebrich et al.	2007	10.492	64.981	–	–	–	–
Dias et al.	2002	10.492	64.981	–	1.72	-0.47	–

💡 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–	5.05	3.69	2.55	1072	-0.610	522	–	15
Cui et al.	2025	–	3.38	–	1778	–	–	–	15⁽¹⁾
Hunt & Reffert	2024	4.38	3.48	2.55	575	–	969⁽¹⁾	–	–
Cavallo et al.	2024	4.90	4.00	–	1072	-0.610	–	–	–
He et al.	2023	5.75	3.60	–	1585	–	–	–	–
Hunt & Reffert	2023	4.38	3.48	2.55	575	–	–	–	–
Just et al.	2023	–	–	–	5	–	76	–	–
Kharchenko et al.	2016	5.05	4.73	–	5	–	–	–	–
Kharchenko et al.	2013	5.05	4.73	–	5	–	–	–	–
Kharchenko et al.	2012	5.50	3.78	–	1514	–	–	–	–
Glushkova et al.	2010	7.70	2.08	–	1259	–	–	–	–
Dias et al.	2002	5.50	3.78	–	1514	–	–	–	–

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

Visualization

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