W3IRS5

0.19 UTI

0.0

C_N

0.3

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 17

Stellar density (N₅₀/rad) 1.5 [N/pc²]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.3 Loose
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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W3IRS5 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane. It is catalogued as a cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 23 years.

Note: This object shares a small percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

⚠️ 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

Lada & Lada (2003)
Embedded cluster within ∼2 Kpc of the Sun.

Data

🔍 Search references for W3IRS5 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–	36.407	62.093	0.459	-1.005	-0.529	30.958
Lada & Lada	2003	36.419	62.098	–	–	–	–

💡 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–	2.4	–	–	–	–	64	–	–
Lada & Lada	2003	2.40	–	–	–	–	64	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
SAI 19	24.0	36.65	62.0	0.48	-0.7	-0.12	-27.12	0.1
IRAS 02232+6138	16.0	36.65	62.0	0.48	-0.68	-0.13	-24.58	0.68

💡 Note: The % column shows the percentage of members that W3IRS5 shares with each listed object.

Visualization

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