All names: Gaia EDR3 1509394551702059392, SDSS J140210.98+474245.31, SDSS J140210.98+474245.3, Gaia DR2 1509394551702059392, Gaia DR3 1509394551702059392, J1402+4742
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Coutu et al. 2019 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 02 10.98 (2) | 14 02 10.98 | 14 02 10.98 | 14 02 10.98 (4) | 14 02 10.98 (2) | |||
| Declination | 47 42 45.47 (2) | 47 42 45.27 | 47 42 45.46 | 47 42 45.46 (2) | 47 42 45.47 (2) | |||
| Spectral type | DZ | DZ | DZ | |||||
| Effective temperature | [K] | 7847.0 (354) | 6929.0 (81) | |||||
| log(g) | [cgs] | 8.00 | 8.00 (0) | |||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | 0.0000 | ||||||
| log(H/He) | <-4.4662 | |||||||
| log(C/He) | ||||||||
| log(Ca/He) | -8.3748 (0.2) | -8.767000000000001 | ||||||
| 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] | |||||||
| Distance | [pc] | 407.13 (29) | ||||||
| Composition | He | He | ||||||
| Proper motion (right ascension) | [mas/yr] | |||||||
| Proper motion (declination) | [mas/yr] | |||||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 21.66 (0.1) | 21.60 (0.1) | 21.60 (0.1) | |||||
| g magnitude | 21.12 (0.03) | 21.11 (0.04) | 21.11 (0.04) | |||||
| r magnitude | 20.98 (0.04) | 20.99 (0.04) | 20.99 (0.04) | |||||
| i magnitude | 21.07 (0.08) | 21.07 (0.08) | 21.07 (0.08) | |||||
| z magnitude | 21.82 (0.4) | 21.78 (0.4) | 21.78 (0.4) | |||||
| G magnitude | 20.99 (0.3) | 21.13 | 20.99 (0.02) | |||||
| BP magnitude | 21.26 (0.3) | |||||||
| RP magnitude | 22.07 (0.4) | |||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.019 | |||||||
* 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.