Trumpler 28b

0.29 UTI

0.61

C_N

0.33

C_dens

0.75

C_C3

0.0

C_lit

0.86

C_dup

C3 classification AB

Number of members (P>50%) 72

Radius (P>50% members) 5.9 [arcmin]

C_N 0.61 Moderately populated
C_dens 0.33 Loose
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.86 Very likely unique

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

Overview

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Trumpler 28b is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high extinction. It is catalogued as a young cluster (see Parameters). It was recently reported in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

Distant Very high extinction Young

Data

🔍 Search references for Trumpler 28b 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	–	264.248	-32.465	0.261	-0.932	-2.523	-12.358
He et al.	2023	264.238	-32.465	0.254	-0.931	-2.529	-12.36

💡 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
He et al.	2023	3.09	5.75	–	79	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2950	13.9	264.27	-32.49	0.29	-0.51	-2.19	-19.96	0.51
Trumpler 28	1.4	264.22	-32.46	0.65	-0.84	-2.83	-48.36	0.91
UBC 569	1.4	264.22	-32.46	0.66	-0.78	-2.81	-37.2	0.05

💡 Note: The % column shows the percentage of members that Trumpler 28b shares with each listed object.

Visualization

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