Ruprecht 4

(Berkeley 74; OCL 560; FSR 1165; MWSC 990)

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UCC G222.0-05.3
C3
N_50
r_50
AB 210 3.3

Search object in NASA/SAO ADS | Simbad

Positions

Reference RA DEC Plx pmRA pmDE Rv
Dias et al. (2002) 102.225 -10.533 – 0.94 -4.3 47.5
Kharchenko et al. (2012) 102.24 -10.51 – 1.79 2.17 –
Loktin & Popova (2017) 102.24 -10.51 – 0.562 0.347 47.5
Bica et al. (2019) 102.248 -10.514 – – – –
Cantat-Gaudin et al. (2020) 102.248 -10.524 0.214 -0.197 0.096 –
Dias et al. (2021) 102.243 -10.529 0.209 -0.205 0.126 –
Hunt & Reffert (2023) 102.245 -10.53 0.211 -0.215 0.098 46.518
Cavallo et al. (2024) 102.235 -10.52 0.213 – – –
Hunt & Reffert (2024) 102.245 -10.53 0.211 -0.215 0.098 46.518
Hu & Soubiran (2025) 102.235 -10.52 – – – –
UCC 102.247 -10.526 0.218 -0.213 0.103 46.421

Search coordinates in CDS | Simbad

Estimated members

Ruprecht 4 UCC
Ruprecht 4 HUNT23
Ruprecht 4 CANTAT20

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Fundamental parameters

Reference Values
Dias et al. (2002) E(B-V)=0.3, Dist=4700.0, Age=8.9, [Fe/H]=-0.09
Kharchenko et al. (2012) e_bv=0.458, distance=4591, log_age=9.005, metallicity=-0.09
Loktin & Popova (2017) E(B-V)=0.559, Dmod=13.823, logt=8.8
Cantat-Gaudin et al. (2020) AVNN=1.24, DMNN=13.06, AgeNN=8.93
Dias et al. (2021) Av=1.673, Dist=3598, logage=8.808, [Fe/H]=-0.1
Hunt & Reffert (2023) AV50=1.455, diffAV50=1.627, MOD50=12.936, logAge50=8.759
Cavallo et al. (2024) AV50=1.55, dMod50=12.51, logAge50=8.99, [Fe/H]50=-0.24
Hunt & Reffert (2024) MassJ=1660.29
Hu & Soubiran (2025) MA22=-0.25, MA23f=-0.43, MA23g=-0.24, MZ23=-0.43, MK24=-0.31, MF24=-0.27

Search coordinates in Bayestar19

Cluster region


Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv
OC 0371 14.3 102.236 -10.529 0.236 -0.199 0.101 48.229
OC 0372 11.9 102.244 -10.524 0.226 -0.211 0.097 48.229