Stephenson 2

(MWSC 2969; RSGC 2; BDB 14)

0.27 UTI

0.0

C_N

0.12

C_dens

0.38

C_C3

0.44

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 19

Radius (P>50% members) 3.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.12 Very loose
C_C3 0.38 Low quality
C_lit 0.44 Poorly studied
C_dup 1.0 Unique

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

Overview

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Stephenson 2 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, near the mid-plane, affected by very high extinction. It is catalogued as a low-mass, very young cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~5.02 kpc) differs significantly from the median photometric distance (~2.60 kpc).

Relatively close Very high extinction Low mass Very young

Data

🔍 Search references for Stephenson 2 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	–	279.87	-6.025	0.199	-2.383	-4.063	44.171
He et al.	2023	279.941	-6.095	0.307	-0.99	-1.913	217.63
Just et al.	2023	279.908	-6.031	–	–	–	–
Bica et al.	2019	279.823	-6.034	–	–	–	–
Kharchenko et al.	2016	279.908	-6.031	–	–	–	–
Dias et al.	2014	279.921	-6.028	–	-0.44	0.8	–
Kharchenko et al.	2013	279.915	-6.03	–	2.69	-7.0	–
Dias et al.	2002	279.921	-6.028	–	-0.44	0.8	–

💡 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	4.07	5.15	–	6	–	–	–	–
Just et al.	2023	–	–	–	1	–	15	–	–
Kharchenko et al.	2016	1.13	10.00	–	1	–	–	–	–
Kharchenko et al.	2013	1.13	10.00	–	1	–	–	–	–
Dias et al.	2002	5.90	3.72	–	20	–	–	–	–

Visualization

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