Riddle 15

(MWSC 3063; DSH J1911.1+1450)

0.45 UTI

0.0

C_N

0.84

C_dens

0.62

C_C3

0.4

C_lit

1.0

C_dup

N₅₀ (P>50% members) 22

Stellar density (N₅₀/rad) 4.2 [N/pc²]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.84 Dense
C_C3 0.62 Intermediate quality
C_lit 0.4 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Riddle 15 is a sparse, dense object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by high extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.57 kpc) differs significantly from the median photometric distance (~5.39 kpc).

Very distant High extinction Old

Data

🔍 Search references for Riddle 15 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–	287.787	14.835	0.28	-1.085	-1.511	–
Just et al.	2023	287.781	14.831	–	–	–	–
Bica et al.	2019	287.785	14.84	–	–	–	–
Kharchenko et al.	2016	287.781	14.831	–	–	–	–
Kharchenko et al.	2013	287.787	14.833	–	-3.67	-7.0	–
Bukowiecki et al.	2011	287.767	14.856	–	–	–	–
Kronberger et al.	2006	287.788	14.834	–	–	–	–
Dias et al.	2002	287.788	14.834	–	-3.67	-7.0	–

💡 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–	5.395	4.78	–	1000	–	330	–	–
Just et al.	2023	–	–	–	1000	–	330	–	–
Kharchenko et al.	2016	4.50	5.16	–	1000	–	–	–	–
Kharchenko et al.	2013	4.50	5.16	–	1000	–	–	–	–
Bukowiecki et al.	2011	11.02⁽¹⁾	4.28	–	1259	–	–	–	–
Dias et al.	2002	6.29	4.40	–	1259	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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