Dolidze 40

(MWSC 3303)

0.12 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.23

C_lit

1.0

C_dup

N_m (P>50%) 17

Core radius and density 2.8 [pc], 0.08 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very low quality
C_lit 0.23 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 40 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by high extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~3.89 kpc) differs significantly from the median photometric distance (~2.70 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 High extinction Intermediate age

Bica et al. (2019)
Analysis of Dolidze objects by M. Kronberger reported in DAML02.

Data

🔍 Search references for Dolidze 40 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–	304.463	37.88	0.257	-3.558	-6.467	–
Just et al.	2023	304.479	37.872	–	–	–	–
Dias et al.	2018	–	–	–	-3.26	-4.6	–
Loktin & Popova	2017	304.485	37.933	–	-1.279	-0.783	-8.9
Sampedro et al.	2017	304.483	37.933	–	0.57	-0.22	–
Kharchenko et al.	2016	304.479	37.872	–	–	–	–
Dias et al.	2014	304.483	37.933	–	-0.22	-0.77	-8.9
Kharchenko et al.	2013	304.485	37.875	–	-5.16	-2.09	–
Dias et al.	2002	304.483	37.933	–	-0.22	-0.77	-8.9
Lynga	1987	304.559	37.844	–	–	–	–

💡 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–	2.7	3.35	–	251	–	119	–	–
Just et al.	2023	–	–	–	251	–	119	–	–
Loktin & Popova	2017	2.10	1.70	–	14	–	–	–	–
Kharchenko et al.	2016	2.70	3.35	–	251	–	–	–	–
Kharchenko et al.	2013	2.70	3.35	–	251	–	–	–	–
Dias et al.	2002	2.70	3.35	–	251	–	–	–	–

Visualization

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