NGC 2451B

(MWSC 1322; Platais 7; HIP 37742 Group; FoF 2400)

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.89 1.0 1.0 1.0 1.0
C3
N_50
r_50
AA 485 33.3
Summary

NGC 2451B is a rich, very dense object of very high C3 quality. It is located at a very close distance from the Sun, near the mid-plane. It is very well-studied in the literature.

This object shares a large percentage of members with 2 later reported entries.

Search object in SciX | Simbad

Positions

Reference RA DEC Plx pmRA pmDE Rv
Dias et al. (2002) 116.112 -37.667 – -10.07 5.45 14.0
Kharchenko et al. (2003) 116.04 -37.98 – -11.97 2.31 –
Kharchenko et al. (2005) 116.11 -37.67 – -10.11 4.2 13.7
Piskunov et al. (2007) 116.108 -37.668 – – – –
Kharchenko et al. (2007) 116.11 -37.67 – 0.4 – 13.7
Piskunov et al. (2008) 116.108 -37.668 – – – –
Kharchenko et al. (2013) 116.115 -37.67 – -10.1 6.21 13.7
Kharchenko et al. (2016) 116.11 -37.668 – – – –
Loktin & Popova (2017) 116.115 -37.667 – -10.07 5.45 13.7
Cantat-Gaudin et al. (2018) 116.128 -37.954 2.719 -9.671 4.702 –
Bica et al. (2019) 116.119 -37.663 – – – –
Soubiran et al. (2018) 116.128 -37.954 – – – 16.78
Bossini et al. (2019) 116.128 -37.954 – – – –
Dias et al. (2019) 116.129 -37.954 2.719 -9.671 4.702 22.791
Liu & Pang (2019) 116.167 -37.994 2.723 -9.707 4.799 –
Cantat-Gaudin et al. (2020) 116.128 -37.954 2.719 -9.671 4.702 –
Dias et al. (2021) 116.008 -37.861 2.719 -9.628 4.715 16.949
Rain et al. (2021) 116.128 -37.954 2.719 -9.671 4.702 –
Jaehnig et al. (2021) 116.134 -37.939 2.759 -9.609 4.824 –
He et al. (2022) 116.511 -39.529 2.739 -9.551 4.822 –
Just et al. (2023) 116.11 -37.668 – – – –
Hunt & Reffert (2023) 116.176 -37.942 2.676 -9.4 4.744 12.842
Cavallo et al. (2024) 115.974 -37.592 2.676 – – –
Hunt & Reffert (2024) 116.176 -37.942 2.676 -9.4 4.744 12.842
Alfonso et al. (2024) 115.941 -37.765 2.654 -9.422 4.708 –
Almeida et al. (2025) 116.008 -37.861 – – – –
           
UCC 116.155 -37.95 2.748 -9.622 4.808 14.491
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

Search coordinates in CDS | Simbad

Estimated members

NGC 2451B UCC
NGC 2451B HUNT23
NGC 2451B CANTAT20

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Fundamental parameters

Reference Values
Dias et al. (2002) E(B-V)=0.055, Dist=302.0, Age=7.648, [Fe/H]=-0.45
Kharchenko et al. (2003) E(B-V)=0.1, Dist=435
Kharchenko et al. (2005) E(B-V)=0.05, Dist=430, logt=7.88
Piskunov et al. (2007) E(B-V)=0.05, Dist=430, logt=7.88, logM=1.415
Piskunov et al. (2008) E(B-V)=0.05, Dist=430, logt=7.88, logM=1.899, logMA=2.076
Kharchenko et al. (2013) E(B-V)=0.167, d=489.0, logt=8.23, [Fe/H]=-0.45
Kharchenko et al. (2016) E(B-V)=0.167, d=489.0, logt=8.23
Loktin & Popova (2017) E(B-V)=0.06, Dist=396, logt=7.731
Cantat-Gaudin et al. (2018) dmode=364.0
Soubiran et al. (2018) dmode=364.0
Bossini et al. (2019) AV=0.208, Dist=7.602, logA=7.592, Fe/H=0.0
Dias et al. (2019) E(B-V)=0.09, Dist=370, logAge=7.557, Z=0.018
Liu & Pang (2019) Age=0.038, Z=0.0
Cantat-Gaudin et al. (2020) AVNN=0.18, DistPc=361.0, AgeNN=7.61
Dias et al. (2021) Av=0.308, Dist=360, logage=7.659, [Fe/H]=0.05
Rain et al. (2021) E(B-V)=0.06, Dist=364.0, log(Age)=7.59, NBSS=0
Jaehnig et al. (2021) dmode=0.362
He et al. (2022) A0=0.55, logAge=7.5
Just et al. (2023) logt=8.23, logmt=1.507
Hunt & Reffert (2023) AV50=0.181, diffAV50=0.853, MOD50=7.785, logAge50=7.44
Cavallo et al. (2024) AV50=0.65, dMod50=7.95, logAge50=7.23, [Fe/H]50=0.03
Hunt & Reffert (2024) MassJ=353.535, MassTot=494.136
Alfonso et al. (2024) AV=0.17891, MOD=7.79050, logAge=7.58263, Z=0.05025
Almeida et al. (2025) AV=0.308, Dist=360, logAge=7.659, MassRk=326.6

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OCSN 231 83.7 116.18 -37.97 2.75 -9.63 4.83 14.5 0.0
CWWDL 14591 46.0 116.21 -38.02 2.75 -9.67 4.84 14.61 0.0