NGC 5155

(MWSC 2125)

0.15 UTI

0.0

C_N

0.01

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 15

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

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.25 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

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NGC 5155 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a young cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~8.08 kpc) differs significantly from the median photometric distance (~1.40 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 Young

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

Data

🔍 Search references for NGC 5155 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	–	202.202	-63.459	0.124	-7.265	-2.072	-30.096
Just et al.	2023	202.459	-63.452	–	–	–	–
Bica et al.	2019	202.011	-63.442	–	–	–	–
Kharchenko et al.	2016	202.459	-63.452	–	–	–	–
Kharchenko et al.	2013	202.47	-63.455	–	-7.68	0.2	-37.1

💡 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	–	–	–	25	–	82	–	–
Kharchenko et al.	2016	1.40	1.10	–	25	–	–	–	–
Kharchenko et al.	2013	1.40	1.10	–	25	–	–	–	–

Visualization

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