Ruprecht 131

(MWSC 2706; OCL 2; ESO 455 45)

0.26 UTI

0.0

C_N

0.07

C_dens

0.38

C_C3

0.44

C_lit

1.0

C_dup

C3 classification CB

Number of members (P>50%) 13

Radius (P>50% members) 7.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.07 Very loose
C_C3 0.38 Low quality
C_lit 0.44 Poorly studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 131 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~2.82 kpc) differs significantly from the median photometric distance (~0.60 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.

Close Low extinction Low mass Old

Data

🔍 Search references for Ruprecht 131 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	–	267.295	-29.264	0.355	-0.558	-1.626	18.13
Just et al.	2023	267.292	-29.236	–	–	–	–
Bica et al.	2019	267.31	-29.251	–	–	–	–
Kharchenko et al.	2016	267.292	-29.236	–	–	–	–
Dias et al.	2014	267.317	-29.25	–	0.28	-2.43	-884.36
Kharchenko et al.	2013	267.3	-29.235	–	0.04	-0.42	–
Piskunov et al.	2008	267.31	-29.251	–	–	–	–
Kharchenko et al.	2005	267.31	-29.25	–	-0.4	-2.41	–

💡 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	–	–	–	1479	–	7	–	–
Kharchenko et al.	2016	0.61	0.32	–	1479	–	–	–	–
Kharchenko et al.	2013	0.61	0.32	–	1479	–	–	–	–
Piskunov et al.	2008	0.60	0.31	–	1479	–	–	–	–
Kharchenko et al.	2005	0.60	0.31	–	1479	–	–	–	–

Visualization

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