RSGC 1

(BDS2003 122)

0.23 UTI

0.0

C_N

0.77

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 22

Stellar density (N₅₀/rad) 3.8 [N/pc²]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.77 Dense
C_C3 0.38 Low 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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RSGC 1 is a sparse, dense object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane. It is catalogued as a very young cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 13 years.

(*): The parallax distance estimate (~2.11 kpc) differs significantly from the median photometric distance (~7.44 kpc).

Note: This object shares a large percentage of members with a later reported entry. 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.

Very distant Very young

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Data

🔍 Search references for RSGC 1 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–	279.508	-6.971	0.474	-1.006	-2.339	-25.714
Morales et al.	2013	279.49	-6.882	–	–	–	–

💡 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–	7.44	–	–	12	–	–	–	–
Morales et al.	2013	7.44	–	–	12	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 1034	100.0	279.57	-6.99	0.49	-1.01	-2.33	20.26	0.51

💡 Note: The % column shows the percentage of members that RSGC 1 shares with each listed object.

Visualization

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