Theia 1885

0.22 UTI

0.46

C_N

0.98

C_dens

0.62

C_C3

0.25

C_lit

0.44

C_dup

C3 classification AC

Number of members (P>50%) 46

Radius (P>50% members) 7.5 [arcmin]

C_N 0.46 Poorly populated
C_dens 0.98 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 0.44 Possibly duplicate

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

Overview

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Theia 1885 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young 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.

Relatively close Low extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 1885 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	–	102.529	-5.361	0.713	-1.24	0.789	14.58
Zhang et al.	2024	102.532	-5.338	–	–	–	–
Hunt & Reffert	2024	102.532	-5.338	0.714	-1.235	0.781	20.785
Cavallo et al.	2024	102.497	-5.424	0.717	–	–	–
Hunt & Reffert	2023	102.532	-5.338	0.714	-1.235	0.781	20.785

💡 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
Zhang et al.	2024	–	–	–	–	-0.275*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	206*	–	–
Cavallo et al.	2024	1.48	0.77	–	9	-0.080	–	–	–
Hunt & Reffert	2023	1.30	0.57	1.31	12	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0364	56.5	102.53	-5.35	0.72	-1.25	0.8	16.87	0.4

💡 Note: The % column shows the percentage of members that Theia 1885 shares with each listed object.

Visualization

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