Dolidze 31

(MWSC 2957)

0.11 UTI

0.0

C_N

0.11

C_dens

0.38

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 0.8 [pc], 0.5 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 0.38 Low quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Dolidze 31 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, very young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~2.62 kpc) differs significantly from the median photometric distance (~5.16 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.

Very distant High extinction Massive Very young

Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010). Analysis of Dolidze objects by M. Kronberger reported in DAML02.

Dias et al. (2002)
Asterism (Archinal, B. A. & Hynes, S. J. 2003); cat V3.5 (Jan 2016)

Data

🔍 Search references for Dolidze 31 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	99999–	278.749	-6.859	0.381	-1.708	-3.507	69.166
Just et al.	2023	278.738	-6.852	–	–	–	–
Kharchenko et al.	2016	278.738	-6.852	–	–	–	–
Kharchenko et al.	2013	278.745	-6.85	–	1.51	-1.1	–

💡 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]	B_frac	BSS
UCC	99999–	5.16	4.27	–	1	–	4539	–	–
Just et al.	2023	–	–	–	1	–	4539	–	–
Kharchenko et al.	2016	5.16	4.27	–	1	–	–	–	–
Kharchenko et al.	2013	5.16	4.27	–	1	–	–	–	–

Visualization

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