FSR 1755

0.23 UTI

0.39

C_N

0.38

C_dens

0.12

C_C3

0.13

C_lit

1.0

C_dup

N₅₀ (P>50% members) 39

Stellar density (N₅₀/rad) 1.9 [N/pc²]

C3 classification DC

C_N 0.39 Poorly populated
C_dens 0.38 Loose
C_C3 0.12 Very low quality
C_lit 0.13 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 1755 is a poorly populated, loose object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane. It is catalogued as a cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 8 years.

Note: This object shares a significant percentage of members with 3 later reported entries. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close

Morales et al. (2013)
Classified as morphological type 'OC0' (emerging exposed cluster). Morphological flag: possibly associated submm emission surrounding the cluster, presence of an IR bubble and possible YSOs.

Data

🔍 Search references for FSR 1755 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–	258.095	-38.445	0.612	-2.633	-3.643	-36.133
Dias et al.	2018	–	–	–	-0.57	-3.94	–
Sampedro et al.	2017	258.083	-38.462	-2.78	-2.15	–	–
Dias et al.	2014	258.083	-38.462	–	-2.63	-3.6	–
Morales et al.	2013	258.083	-38.462	–	–	–	–
Froebrich et al.	2007	258.083	-38.462	–	–	–	–
Dias et al.	2002	258.083	-38.462	–	-2.63	-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–	1.33	–	–	–	–	–	–	–
Morales et al.	2013	1.33	–	–	–	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LS 474	61.5	257.88	-38.3	0.58	-2.45	-3.32	-27.48	0.32
Ryu 401	2.6	257.95	-38.61	0.66	-1.41	-3.07	-39.66	0.23
Teutsch 258	2.6	257.85	-38.43	0.64	-2.81	-4.64	-34.03	0.09

💡 Note: The % column shows the percentage of members that FSR 1755 shares with each listed object.

Visualization

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