Melotte 20

(Alpha Persei; Collinder 39)

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UCC G147.3-06.4

C1 C2 C3
N_50
r_50
1.0 1.0 AA 842 92.1

Search object in NASA/SAO ADS | Simbad

Positions

Reference RA DEC Plx pmRA pmDE Rv
Dambis (1999) 51.079 49.862
Chen et al. (2003) 50.488 48.622
Kharchenko et al. (2012) 51.675 48.8 21.49 -26.11
Loktin & Popova (2017) 50.145 48.167 22.261 -25.998 -1.4
Bossini et al. (2019) 51.617 48.975
Cantat-Gaudin et al. (2020) 51.617 48.975 5.668 22.864 -25.378
Donor et al. (2020) 51.675 48.8 23.34 -25.8 1.0
Dias et al. (2021) 51.51 48.933 5.695 22.845 -25.403 -0.517
Jaehnig et al. (2021) 51.594 48.981 5.736 22.921 -25.451
Tarricq et al. (2022) 51.772 49.05 5.77 23.017 -25.434
He et al. (2022) 51.626 48.932 5.746 22.97 -25.431
Hunt & Reffert (2023) 51.332 49.119 5.741 22.918 -25.463 -0.869
Cavallo et al. (2024) 51.609 48.912 5.747
UCC 51.637 48.937 5.74 22.883 -25.431 -1.009

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Estimated members

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Fundamental parameters

Reference Values
Dambis (1999) E_B-V_=0.099, DM0=5.94, log_age_=7.4
Chen et al. (2003) E(B-V)=0.09, HDis=185.0, Age=0.07, [Fe/H]=-0.05
Kharchenko et al. (2012) e_bv=0.09, distance=175, log_age=7.7
Loktin & Popova (2017) E(B-V)=0.09, Dmod=6.323, logt=7.854
Bossini et al. (2019) AV=0.055, Dist=5.824, logA=7.938, Fe/H=0.14
Cantat-Gaudin et al. (2020) AVNN=0.3, DMNN=6.17, AgeNN=7.71
Donor et al. (2020) Fe/H=0.01
Dias et al. (2021) Av=0.324, Dist=177, logage=7.921, [Fe/H]=0.158
Tarricq et al. (2022) Dist=171, logAgeNN=7.71
He et al. (2022) A0=0.55, logAge=7.8
Hunt & Reffert (2023) AV50=0.242, diffAV50=0.61, MOD50=6.185, logAge50=7.745
Cavallo et al. (2024) AV50=0.74, dMod50=6.19, logAge50=7.62, [Fe/H]50=0.12


Last modified: 2025-01-31