NGC 1931

N_50

r_50

1.5

Summary

NGC 1931 is a moderately populated, very dense object of high C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is moderately studied in the literature.

This object shares a large percentage of members with a later reported entry.

Search object in SciX | Simbad

Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Dambis (1999)	82.861	34.249	–	–	–	–
Dias et al. (2002)	82.854	34.245	–	-0.29	-3.48	–
Glushkova et al. (2010)	82.858	34.214	–	–	–	–
Loktin & Popova (2017)	82.86	34.245	–	-0.011	-1.655	–
Jaehnig et al. (2021)	82.804	34.238	0.455	0.302	-1.935	–
Hunt & Reffert (2023)	82.852	34.224	0.424	0.237	-2.036	-20.834
Cavallo et al. (2024)	82.843	34.224	0.425	–	–	–
Hunt & Reffert (2024)	82.852	34.224	0.424	0.237	-2.036	-20.834

UCC	82.851	34.226	0.436	0.216	-2.028	-20.833

Galactocentric position

How are the galactocentric plots generated?

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Estimated members

1 2

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Fundamental parameters

Reference	Values
Dambis (1999)	`E_B-V_=0.543, DM0=11.7, log_age_=7.1`
Dias et al. (2002)	`E(B-V)=0.74, Dist=2300.0, Age=6.3`
Glushkova et al. (2010)	`E(B-V)=1.97, Dist=1000.0, Age=7.0`
Loktin & Popova (2017)	`E(B-V)=0.738, Dist=3068, logt=7.002`
Jaehnig et al. (2021)	`dmode=2.263`
Hunt & Reffert (2023)	`AV50=1.921, diffAV50=2.449, MOD50=11.629, logAge50=7.069`
Cavallo et al. (2024)	`AV50=1.11, dMod50=11.48, logAge50=7.92, [Fe/H]50=0.26`
Hunt & Reffert (2024)	`MassJ=458.651, MassTot=458.651`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3181	90.6	82.85	34.22	0.45	0.21	-2.0	-20.83	0.06