Collinder 121

0.31 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.7

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 15

Radius (P>50% members) 8.5 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.7 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 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 (~0.99 kpc).

Close Low extinction Massive Very young

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	–	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	–
Loktin & Popova	2017	104.085	-24.728	–	-1.002	1.221	31.4
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
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	–	–	–	–

💡 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
Jaehnig et al.	2021	0.88*	–	–	–	–	–	–	–
Loktin & Popova	2017	0.54	0.09	–	12	–	–	–	–
Gozha et al.	2012	1.10	–	–	12	–	4365	–	–
Piskunov et al.	2008	1.10	0.12	–	12	–	–	–	–
van den Bergh	2006	0.47	0.09	–	11	–	–	–	–
Kharchenko et al.	2005	1.10	0.12	–	12	–	–	–	–
Kharchenko et al.	2003	1.17	0.09	–	–	–	–	–	–
Chen et al.	2003	0.47	–	–	10	–	–	–	–
Dias et al.	2002	1.10	0.12	–	12	–	–	–	–
Dambis	1999	0.63	0.08	–	10	–	–	–	–

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

Visualization

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