Ruprecht 149

(MWSC 1006)

0.15 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.31

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 16

Radius (P>50% members) 8.5 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 149 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by low extinction. It is catalogued as a massive, old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~7.62 kpc) differs significantly from the median photometric distance (~3.97 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.

Distant Low extinction Massive Old

Data

🔍 Search references for Ruprecht 149 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	–	103.128	-23.667	0.131	-1.038	1.446	–
Just et al.	2023	103.114	-23.656	–	–	–	–
Loktin & Popova	2017	103.125	-23.666	–	-0.205	0.485	–
Kharchenko et al.	2016	103.114	-23.656	–	–	–	–
Dias et al.	2014	103.125	-23.667	–	-0.3	1.31	–
Kharchenko et al.	2013	103.12	-23.658	–	-0.37	1.63	–

💡 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	–	–	–	1995	–	1581	–	–
Loktin & Popova	2017	4.04	0.72	–	955	–	–	–	–
Kharchenko et al.	2016	3.97	0.07	–	1995	–	–	–	–
Kharchenko et al.	2013	3.97	0.07	–	1995	–	–	–	–

Visualization

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