FSR 0687

(SAI 37; MWSC 406)

0.61 UTI

0.76

C_N

1.0

C_dens

0.62

C_C3

0.32

C_lit

1.0

C_dup

N₅₀ (P>50% members) 128

Stellar density (N₅₀/rad) 6.8 [N/pc²]

C3 classification AC

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.32 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0687 is a rich, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.

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

Distant High extinction Massive Near-solar metallicity Old Contains BSS

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for FSR 0687 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–	69.853	48.202	0.214	0.664	0.267	-31.225
Hu & Soubiran	2025	69.876	48.197	–	–	–	–
Cui et al.	2025	69.86	48.204	0.19	0.67	0.27	–
Hunt & Reffert	2024	69.833	48.207	0.218	0.68	0.27	–
Cavallo et al.	2024	69.876	48.197	0.215	–	–	–
He et al.	2023	69.853	48.202	0.187	0.666	0.266	-31.23
Hunt & Reffert	2023	69.833	48.207	0.218	0.68	0.27	–
Donor et al.	2020	69.871	48.194	–	0.53	0.35	-29.3
Bica et al.	2019	69.872	48.213	–	–	–	–
Glushkova et al.	2010	69.863	48.206	–	–	–	–
Froebrich et al.	2007	69.871	48.194	–	–	–	–
Dias et al.	2002	69.871	48.194	–	–	–	–

💡 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–	4.315	3.8	1.27	1259	-0.085	1117	–	4
Hu & Soubiran	2025	–	–	–	–	-0.020⁽⁵⁾	–	–	–
Cui et al.	2025	–	3.95	–	1122	–	–	–	4⁽¹⁾
Hunt & Reffert	2024	–	–	–	–	–	1117⁽¹⁾	–	–
Cavallo et al.	2024	4.53	3.93	–	708	0.420	–	–	–
He et al.	2023	3.55	3.80	–	1585	–	–	–	–
Hunt & Reffert	2023	4.10	3.79	1.27	1259	–	–	–	–
Spina et al.	2022	–	–	–	–	-0.150	–	–	–
Donor et al.	2020	–	–	–	–	-0.150	–	–	–
Glushkova et al.	2010	7.20	2.43	–	1413	–	–	–	–

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

Visualization

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