All names: EC 21427-1656, Gaia EDR3 6838163293346622336, Gaia DR3 6838163293346622336, PHL 131, Gaia DR2 6838163293346622336, BPS CS 22944-0044, WD 2142-169
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Voss et al. 2007 | Koester et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 45 27.78 (0.05) | 21 45 27.78 (0.08) | 21 45 27.78 | 21 45 27.68 (0.05) | 21 45 27.07 | ||||
| Declination | -16 43 08.93 (0.04) | -16 43 08.92 (0.06) | -16 43 08.93 | -16 43 08.46 (0.04) | -16 43 08.76 | ||||
| Spectral type | DBAZ | DB | DO5 | DB | |||||
| Effective temperature | [K] | 39138.0 | 15900.0 | 38627.0 (692) | |||||
| log(g) | [cgs] | 7.74 | 7.93 | 7.87 (0.02) | |||||
| Mass | [M☉] | 0.505 | 0.563 (0.01) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | >-2 | -4.5 | |||||||
| log(C/He) | |||||||||
| log(Ca/He) | -9.1 | ||||||||
| log(Ca/H) | |||||||||
| log(N/He) | |||||||||
| log(O/He) | |||||||||
| log(Na/He) | |||||||||
| log(Mg/He) | |||||||||
| log(Al/He) | |||||||||
| log(Si/He) | |||||||||
| log(P/He) | |||||||||
| log(S/He) | |||||||||
| log(Cl/He) | |||||||||
| log(Sc/He) | |||||||||
| log(Ti/He) | |||||||||
| log(V/He) | |||||||||
| log(Cr/He) | |||||||||
| log(Mn/He) | |||||||||
| log(Fe/He) | |||||||||
| log(Co/He) | |||||||||
| log(Ni/He) | |||||||||
| log(Cu/He) | |||||||||
| log(Zn/He) | |||||||||
| log(Ga/He) | |||||||||
| log(Ge/He) | |||||||||
| log(Sr/He) | |||||||||
| Parallax | [mas] | 5.72 (0.06) | 5.88 (0.09) | 5.72 | 5.72 (0.06) | ||||
| Distance | [pc] | 174.83 (2) | 170.05 (3) | 174.83 | 174.83 (2) | ||||
| Composition | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | 85.1656955 (0.06) | 85.12109589 (0.1) | 85.166 (0.06) | |||||
| Proper motion (declination) | [mas/yr] | -29.82912324 (0.04) | -29.98252397 (0.1) | -29.829 (0.04) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.60 | 15.63 | |||||||
| V magnitude | 15.90 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 15.75 (0.002) | 15.77 | 15.75 | 15.75 (0.003) | |||||
| BP magnitude | 15.61 (0.002) | 15.56 | |||||||
| RP magnitude | 16.03 (0.003) | 16.03 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.009 | ||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.