Basel 5

(MWSC 2727; OCL 1038; ESO 455 56)

0.32 UTI

0.0

C_N

0.02

C_dens

0.5

C_C3

0.55

C_lit

1.0

C_dup

C3 classification DA

Number of members (P>50%) 8

Radius (P>50% members) 7.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.55 Moderately studied
C_dup 1.0 Unique

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

Overview

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Basel 5 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~4.54 kpc) differs significantly from the median photometric distance (~0.77 kpc).

Close Low extinction Intermediate age

Cantat-Gaudin et al. (2020)
Likely an asterism caused by patchy extinction in a dense field; Gaia DR2 astrometry is too dispersed for a real cluster. More details in Appendix A of the article.

Data

🔍 Search references for Basel 5 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	–	268.181	-30.062	0.22	-2.76	-5.472	–
Just et al.	2023	268.116	-30.105	–	–	–	–
Bica et al.	2019	268.127	-30.092	–	–	–	–
Kharchenko et al.	2016	268.116	-30.105	–	–	–	–
Dias et al.	2014	268.112	-30.1	–	-0.09	-1.74	–
Kharchenko et al.	2013	268.125	-30.105	–	3.37	2.0	–
Piskunov et al.	2008	268.096	-30.099	–	–	–	–
van den Bergh	2006	268.1	-30.1	–	–	–	–
Kharchenko et al.	2005	268.11	-30.1	–	3.17	1.76	–
Dias et al.	2002	268.113	-30.1	–	-0.15	-1.72	–

💡 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	–	–	–	708	–	65	–	–
Kharchenko et al.	2016	0.99	1.07	–	708	–	–	–	–
Kharchenko et al.	2013	0.99	1.07	–	708	–	–	–	–
Piskunov et al.	2008	0.77	0.99	–	347	–	–	–	–
van den Bergh	2006	0.77	0.99	–	741	–	–	–	–
Kharchenko et al.	2005	0.77	0.99	–	347	–	–	–	–
Dias et al.	2002	0.77	0.99	–	741	–	–	–	–

Visualization

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