Sigma Orionis

UCC G206.8-17.3
C1	C2	C3	N_50	r_50
0.87	1.0	AA	52	4.9

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Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Loktin & Popova (2017)	84.675	-2.6	–	1.731	0.467	29.4
Cantat-Gaudin et al. (2020)	84.716	-2.582	2.48	1.577	-0.512	–
Donor et al. (2020)	84.675	-2.6	–	1.23	-0.46	30.7
Dias et al. (2021)	84.758	-2.594	2.479	1.59	-0.568	-13.802
He et al. (2022)	84.675	-2.602	2.495	1.545	-0.485	–
Hunt & Reffert (2023)	84.71	-2.61	2.5	1.48	-0.61	24.974
Cavallo et al. (2024)	84.72	-2.615	2.497	–	–	–
UCC	84.675	-2.606	2.498	1.387	-0.608	29.223

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Estimated members

1 2 3

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Fundamental parameters

Reference	Values
Loktin & Popova (2017)	E(B-V)=0.17, Dmod=8.373, logt=6.83
Donor et al. (2020)	Fe/H=-0.15
Dias et al. (2021)	Av=0.166, Dist=303, logage=6.997, [Fe/H]=-0.092
He et al. (2022)	A0=0.15, logAge=6.5
Hunt & Reffert (2023)	AV50=0.902, diffAV50=2.249, MOD50=7.907, logAge50=6.572
Cavallo et al. (2024)	AV50=1.19, dMod50=8.06, logAge50=6.63, [Fe/H]50=0.09

Probable duplicates

Cluster	P (%)	RA	DEC	Plx	pmRA	pmDE	Rv
UBC 205	84	84.698	-2.605	2.478	1.551	-0.582	25.162

Last modified: 2025-01-31