Ruprecht 156

(MWSC 1473; OCL 744; ESO 259 02)

0.13 UTI

0.0

C_N

0.03

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 13

Radius (P>50% members) 6.9 [arcmin]

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.12 Very 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

Ruprecht 156 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.71 kpc) differs significantly from the median photometric distance (~2.72 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 Moderate extinction Old

Dias et al. (2002)
Asterism (Archinal, B. A. & Hynes, S. J. 2003)

Data

🔍 Search references for Ruprecht 156 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	124.852	-45.357	0.212	-2.45	3.783	65.209
Just et al.	2023	124.885	-45.347	–	–	–	–
Bica et al.	2019	124.852	-45.344	–	–	–	–
Kharchenko et al.	2016	124.885	-45.347	–	–	–	–
Kharchenko et al.	2013	124.89	-45.35	–	-7.08	5.07	–

💡 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	–	–	–	2042	–	324	–	–
Kharchenko et al.	2016	2.72	1.23	–	2042	–	–	–	–
Kharchenko et al.	2013	2.72	1.23	–	2042	–	–	–	–

Visualization

ℹ️