OCSN 244

(ONC)

0.25 UTI

0.58

C_N

1.0

C_dens

0.62

C_C3

0.0

C_lit

0.56

C_dup

N₅₀ (P>50% members) 66

Stellar density (N₅₀/rad) 44.1 [N/pc²]

C3 classification AC

C_N 0.58 Moderately populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.56 Likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 244 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a very close^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a very young cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~0.40 kpc) differs significantly from the median photometric distance (~0.76 kpc).

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry, and a significant percentage with at least one entry reported in the same catalogue. See table with shared members information.

Close Moderate extinction Very young

Data

🔍 Search references for OCSN 244 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–	83.823	-5.432	2.52	1.387	0.33	25.623
Qin et al.	2023	83.82	-5.39	2.49	1.41	0.35	23.68

💡 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–	0.76	1.64	–	4	–	–	–	–
Qin et al.	2023	0.76	1.64	–	4	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OCSN 225	74.2	83.84	-4.96	2.55	1.25	-0.08	22.73	0.36
UBC 208	43.9	83.81	-5.95	2.6	1.24	0.54	23.25	0.06
NGC 1976	40.9	83.82	-5.45	2.58	1.25	0.19	19.86	0.78
NGC 1980	36.4	83.82	-5.96	2.6	1.24	0.55	20.88	0.82
OCSN 226	33.3	83.82	-5.96	2.61	1.26	0.55	23.02	0.02
OMC 2	3.0	83.85	-5.17	2.54	1.04	-0.02	26.69	0.17
OC 0345	1.5	83.77	-5.87	2.58	1.06	0.21	19.86	0.03
UBC 207	1.5	83.87	-4.61	2.57	1.11	0.57	20.54	0.53

💡 Note: The % column shows the percentage of members that OCSN 244 shares with each listed object.

Visualization

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