Ruprecht 18

UCC G239.9-04.9
C1	C2	C3	N_50	r_50
1.0	0.74	AB	675	8.0

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Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Dambis (1999)	111.162	-26.217	–	–	–	–
Chen et al. (2003)	111.16	-26.209	–	–	–	–
Kharchenko et al. (2012)	111.18	-26.21	–	-2.48	1.58	–
Loktin & Popova (2017)	111.165	-26.217	–	-3.694	1.445	31.0
Cantat-Gaudin et al. (2020)	111.16	-26.213	0.364	-0.487	1.127	–
Dias et al. (2021)	111.152	-26.224	0.369	-0.493	1.107	31.487
Hunt & Reffert (2023)	111.164	-26.207	0.382	-0.465	1.165	36.134
Cavallo et al. (2024)	111.137	-26.225	0.383	–	–	–
UCC	111.154	-26.216	0.37	-0.462	1.156	38.632

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Estimated members

1 2 3

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Fundamental parameters

Reference	Values
Dambis (1999)	E_B-V_=0.743, DM0=10.04, log_age_=7.9
Chen et al. (2003)	E(B-V)=0.7, HDis=1056.0, Age=0.04, [Fe/H]=-0.01
Kharchenko et al. (2012)	e_bv=0.687, distance=1499, log_age=8.455, metallicity=-0.01
Loktin & Popova (2017)	E(B-V)=0.703, Dmod=10.358, logt=7.538
Cantat-Gaudin et al. (2020)	AVNN=1.43, DMNN=12.12, AgeNN=8.11
Dias et al. (2021)	Av=1.953, Dist=2259, logage=8.114, [Fe/H]=0.123
Hunt & Reffert (2023)	AV50=1.838, diffAV50=2.48, MOD50=11.9, logAge50=8.208
Cavallo et al. (2024)	AV50=2.03, dMod50=11.98, logAge50=8.43, [Fe/H]50=0.38

Probable duplicates

Cluster	P (%)	RA	DEC	Plx	pmRA	pmDE	Rv
FSR 1300	43	111.163	-26.274	0.388	-0.443	1.206	38.366

Last modified: 2025-01-31