NGC 4439
(MWSC 2035)
Summary
NGC 4439 is a moderately populated, very dense object of high C3 quality. It is located at a relatively close distance from the Sun, above the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 187.1 | -60.1 | – | – | – | – |
| Dias et al. (2002) | 187.113 | -60.105 | – | -10.49 | -0.85 | – |
| Kharchenko et al. (2003) | 187.11 | -60.1 | – | -12.18 | -6.63 | – |
| Kharchenko et al. (2005) | 187.11 | -60.1 | – | -10.8 | -5.04 | – |
| Piskunov et al. (2008) | 187.098 | -60.093 | – | – | – | – |
| Kharchenko et al. (2013) | 187.117 | -60.11 | – | -11.4 | -4.73 | – |
| Kharchenko et al. (2016) | 187.108 | -60.107 | – | – | – | – |
| Loktin & Popova (2017) | 187.11 | -60.105 | – | -12.942 | -5.335 | – |
| Cantat-Gaudin et al. (2018) | 187.119 | -60.097 | 0.474 | -7.089 | -0.413 | – |
| Bossini et al. (2019) | 187.119 | -60.097 | – | – | – | – |
| Cantat-Gaudin et al. (2020) | 187.119 | -60.097 | 0.474 | -7.089 | -0.413 | – |
| Dias et al. (2021) | 187.121 | -60.098 | 0.473 | -7.054 | -0.374 | – |
| Rain et al. (2021) | 187.119 | -60.097 | 0.474 | -7.089 | -0.413 | – |
| Jaehnig et al. (2021) | 187.105 | -60.109 | 0.512 | -7.116 | -0.461 | – |
| Just et al. (2023) | 187.108 | -60.107 | – | – | – | – |
| Hunt & Reffert (2023) | 187.111 | -60.097 | 0.499 | -7.175 | -0.434 | -19.882 |
| Cavallo et al. (2024) | 187.102 | -60.092 | 0.501 | – | – | – |
| Hunt & Reffert (2024) | 187.111 | -60.097 | 0.499 | -7.175 | -0.434 | -19.882 |
| Almeida et al. (2025) | 187.121 | -60.098 | – | – | – | – |
| UCC | 187.115 | -60.096 | 0.501 | -7.124 | -0.432 | -24.978 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.335, DM0=10.97, log_age_=7.8 |
| Dias et al. (2002) | E(B-V)=0.348, Dist=1785.0, Age=7.909 |
| Kharchenko et al. (2003) | E(B-V)=0.35, Dist=1785 |
| Kharchenko et al. (2005) | E(B-V)=0.35, Dist=1785, logt=7.71 |
| Piskunov et al. (2008) | E(B-V)=0.35, Dist=1785, logt=7.71, logMA=1.288 |
| Kharchenko et al. (2013) | E(B-V)=0.312, d=1659.0, logt=7.71 |
| Kharchenko et al. (2016) | E(B-V)=0.312, d=1659.0, logt=7.71 |
| Loktin & Popova (2017) | E(B-V)=0.352, Dist=1812, logt=7.87 |
| Cantat-Gaudin et al. (2018) | dmode=1986.7 |
| Bossini et al. (2019) | AV=1.064, Dist=11.562, logA=7.778, Fe/H=0.0 |
| Cantat-Gaudin et al. (2020) | AVNN=0.99, DistPc=2011.0, AgeNN=7.72 |
| Dias et al. (2021) | Av=1.25, Dist=1788, logage=7.706, [Fe/H]=0.019 |
| Rain et al. (2021) | E(B-V)=0.34, Dist=1986.7, log(Age)=7.77, NBSS=0 |
| Jaehnig et al. (2021) | dmode=1.977 |
| Just et al. (2023) | logt=7.71, logmt=2.307 |
| Hunt & Reffert (2023) | AV50=0.973, diffAV50=0.696, MOD50=11.301, logAge50=7.972 |
| Cavallo et al. (2024) | AV50=1.4, dMod50=11.23, logAge50=7.59, [Fe/H]50=-0.13 |
| Hunt & Reffert (2024) | MassJ=473.363, MassTot=480.636 |
| Almeida et al. (2025) | AV=1.25, Dist=1788, logAge=7.706, MassRk=297.0 |
Search coordinates in Bayestar19