FSR 1303

(MWSC 973)

0.18 UTI

0.0

C_N

0.03

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 21

Radius (P>50% members) 8.1 [arcmin]

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

FSR 1303 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~5.05 kpc) differs significantly from the median photometric distance (~1.83 kpc).

⚠️ 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 Low extinction Old

Data

🔍 Search references for FSR 1303 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	101.194	-31.893	0.198	-1.247	3.145	116.728
Just et al.	2023	101.177	-31.891	–	–	–	–
Kharchenko et al.	2016	101.177	-31.891	–	–	–	–
Kharchenko et al.	2013	101.182	-31.893	–	-1.06	5.73	–
Froebrich et al.	2007	101.179	-31.889	–	–	–	–

💡 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
Just et al.	2023	–	–	–	1496	–	123	–	–
Kharchenko et al.	2016	1.83	0.81	–	1496	–	–	–	–
Kharchenko et al.	2013	1.83	0.81	–	1496	–	–	–	–

Visualization

ℹ️