Collinder 121

0.23 UTI

0.0

C_N

0.0

C_dens

0.12

C_C3

0.52

C_lit

1.0

C_dup

N_m (P>50%) 15

Core radius and density 7.7 [pc], 0.02 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.0 Very loose
C_C3 0.12 Very low quality
C_lit 0.52 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 121 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by low extinction. It is catalogued as a massive, very young cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~5.73 kpc) differs significantly from the median photometric distance (~1.10 kpc).

Relatively close Low extinction Massive Very young

Richer et al. (2021)
The expected number of WDs is 0.0, 0 WD candidates found, and 15 WD candidates found in the wide search.

Data

🔍 Search references for Collinder 121 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–	104.1	-24.75	0.174	-0.201	2.08	93.923
Jaehnig et al.	2021	103.641	-24.312	1.135	-2.786	3.482	–
Richer et al.	2021	104.056	-24.256	1.119	-2.81	3.405	–
Dib et al.	2018	103.642	-24.325	–	–	–	–
Loktin & Popova	2017	104.085	-24.728	–	-1.002	1.221	31.4
Sampedro et al.	2017	104.083	-24.729	–	-1.31	0.57	–
Joshi et al.	2016	103.642	-24.325	–	–	–	–
Dias et al.	2014	104.083	-24.729	–	-1.32	0.6	–
Gozha et al.	2012	104.083	-24.729	–	–	–	–
Piskunov et al.	2008	103.675	-24.294	–	–	–	–
Kharchenko et al.	2007	104.08	-24.73	–	0.53	–	31.35
Ahumada & Lapasset	2007	103.55	-24.417	–	–	–	–
van den Bergh	2006	103.675	-24.3	–	–	–	–
Kharchenko et al.	2005	103.68	-24.3	–	-3.87	4.08	35.3
Kharchenko et al.	2003	103.66	-24.26	–	-4.31	3.8	–
Chen et al.	2003	103.536	-24.636	–	-3.19	4.56	35.0
Dias et al.	2002	104.083	-24.729	–	-3.87	4.08	31.35
Dambis	1999	104.083	-24.73	–	–	–	–
Lynga	1987	103.532	-24.627	–	–	–	36.0

💡 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–	1.1	0.09	–	12	–	4365	–	0
Jaehnig et al.	2021	0.88⁽¹⁾	–	–	–	–	–	–	–
Richer et al.	2021	–	0.30	–	20	–	–	–	–
Dib et al.	2018	1.10	–	–	12	–	–	–	–
Loktin & Popova	2017	0.54	0.09	–	12	–	–	–	–
Joshi et al.	2016	1.10	0.20	–	12	–	4365	–	–
Gozha et al.	2012	1.10	–	–	12	–	4365	–	–
Piskunov et al.	2008	1.10	0.13	–	12	–	–	–	–
Ahumada & Lapasset	2007	–	0.09	–	11	–	–	–	0
van den Bergh	2006	0.47	0.09	–	11	–	–	–	–
Kharchenko et al.	2005	1.10	0.13	–	12	–	–	–	–
Kharchenko et al.	2003	1.17	0.09	–	–	–	–	–	–
Chen et al.	2003	0.47	–	–	10	–	–	–	–
Dias et al.	2002	1.10	0.13	–	12	–	–	–	–
Dambis	1999	0.63	0.09	–	10	–	–	–	–
Lynga	1987	1.17	0.03	–	2	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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