Trumpler 28a

0.03 UTI

0.0

C_N

0.07

C_dens

0.25

C_C3

0.0

C_lit

0.44

C_dup

C3 classification CC

Number of members (P>50%) 15

Radius (P>50% members) 6.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.07 Very loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 0.44 Possibly duplicate

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

Overview

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

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Distant Very high extinction Intermediate age

Data

🔍 Search references for Trumpler 28a 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	–	264.292	-32.48	0.279	-0.331	-1.872	–
He et al.	2023	264.284	-32.454	0.292	-0.352	-1.845	-28.49

💡 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	4.47	6.20	–	158	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2950	56.0	264.27	-32.49	0.29	-0.51	-2.19	-19.96	0.51

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

Visualization

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