Ruprecht 150

(MWSC 1093)

0.19 UTI

0.0

C_N

0.06

C_dens

0.25

C_C3

0.31

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 20

Radius (P>50% members) 6.4 [arcmin]

C_N 0.0 Sparse
C_dens 0.06 Very loose
C_C3 0.25 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 150 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, well below the mid-plane, affected by low extinction. It is catalogued as a low-mass, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.24 kpc) differs significantly from the median photometric distance (~1.79 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 Low mass Intermediate age

Data

🔍 Search references for Ruprecht 150 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	–	106.488	-28.389	0.236	-1.228	3.366	64.883
Just et al.	2023	106.487	-28.408	–	–	–	–
Kharchenko et al.	2016	106.487	-28.408	–	–	–	–
Dias et al.	2014	106.479	-28.417	–	0.86	2.9	–
Kharchenko et al.	2013	106.492	-28.41	–	-1.6	1.17	–
Dias et al.	2002	106.479	-28.417	–	-1.6	1.17	–

💡 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	–	–	–	501	–	44	–	–
Kharchenko et al.	2016	1.79	0.84	–	501	–	–	–	–
Kharchenko et al.	2013	1.79	0.84	–	501	–	–	–	–
Dias et al.	2002	1.79	0.84	–	501	–	–	–	–

Visualization

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