NGC 1981

0.39 UTI

0.32

C_N

0.07

C_dens

0.25

C_C3

0.65

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 32

Radius (P>50% members) 99.8 [arcmin]

C_N 0.32 Poorly populated
C_dens 0.07 Very loose
C_C3 0.25 Low quality
C_lit 0.65 Moderately studied
C_dup 1.0 Unique

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

Overview

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NGC 1981 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, very young cluster (see Parameters). It is moderately studied in the literature.

Very close Low extinction Low mass Near-solar metallicity Very young

Data

🔍 Search references for NGC 1981 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	–	82.163	-4.832	3.024	0.757	-0.603	17.536
He et al.	2022	80.513	-4.856	3.019	0.703	-0.834	–
Donor et al.	2020	83.775	-4.42	–	1.11	0.58	28.8
Loktin & Popova	2017	83.79	-4.342	–	3.22	1.36	27.9
Dias et al.	2014	83.783	-4.343	–	3.22	1.36	–
Gozha et al.	2012	83.783	-4.343	–	–	–	–
Piskunov et al.	2008	83.788	-4.397	–	–	–	–
Kharchenko et al.	2007	83.79	-4.43	–	0.25	–	27.94
Piskunov et al.	2007	83.788	-4.397	–	–	–	–
Kharchenko et al.	2005	83.79	-4.4	–	1.01	1.14	27.94
Kharchenko et al.	2003	83.77	-4.39	–	0.42	-0.92	–
Dias et al.	2002	83.783	-4.343	–	3.22	1.36	20.06

💡 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.	2022	–	0.25	–	11	–	–	–	–
Donor et al.	2020	–	–	–	–	-0.180	–	–	–
Loktin & Popova	2017	0.42	0.65	–	7	–	–	–	–
Gozha et al.	2012	0.40	–	–	5	–	20	–	–
Piskunov et al.	2008	0.40	0.16	–	32	–	24*	–	–
Piskunov et al.	2007	0.40	0.16	–	32	–	7	–	–
Kharchenko et al.	2005	0.40	0.16	–	32	–	–	–	–
Kharchenko et al.	2003	0.40	0.16	–	–	–	–	–	–
Dias et al.	2002	0.38	0.22	–	5	–	–	–	–

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

Visualization

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