All names: SDSS J140919.85+000853.96, SDSS J140919.85+000853.9, Gaia EDR3 3660164979258810112, Gaia DR3 3660164979258810112, SDSS J140919.84+000854.0, MGC 56944, Gaia DR2 3660164979258810112, GALEX J140919.8+000855
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 09 19.85 (0.4) | 14 09 19.85 | 14 09 19.85 (0.4) | 14 09 19.85 (0.4) | |||||
| Declination | 00 08 54.12 (0.3) | 00 08 54.04 | 00 08 54.12 (0.4) | 00 08 54.13 (0.3) | |||||
| Spectral type | DOZ | DO | DO | ||||||
| Effective temperature | [K] | 78506.0 (6931) | 90000.0 (10000) | ||||||
| log(g) | [cgs] | 8.05 (0.4) | 7.94 (0.5) | ||||||
| Mass | [M☉] | 0.72 (0.2) | |||||||
| log(Luminosity) | [L☉] | 0.77 (0.3) | |||||||
| Cooling age | [Gyr] | 0.0006 (0.0002) | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| 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] | 0.57 (0.4) | 0.09 (0.5) | 0.57 (0.4) | |||||
| Distance | [pc] | 1769.13 (1110) | 11443.63 (59777) | 1768.97 (1110) | |||||
| Composition | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | -1.721353938 (0.5) | -5.025056981 (1) | -1.721 (0.5) | |||||
| Proper motion (declination) | [mas/yr] | -0.999915044 (0.3) | -0.054746157 (0.8) | -1.0 (0.3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 18.56 (0.01) | 18.56 (0.01) | 18.56 (0.01) | ||||||
| g magnitude | 19.01 (0.009) | 19.01 (0.01) | 19.01 (0.01) | ||||||
| r magnitude | 19.57 (0.02) | 19.57 (0.02) | 19.57 (0.02) | ||||||
| i magnitude | 20.00 (0.03) | 20.00 (0.03) | 20.00 (0.03) | ||||||
| z magnitude | 20.11 (0.1) | 20.11 (0.1) | 20.11 (0.1) | ||||||
| G magnitude | 19.28 (0.02) | 19.33 | 19.28 (0.004) | ||||||
| BP magnitude | 19.15 (0.02) | 18.98 | |||||||
| RP magnitude | 19.44 (0.07) | 19.61 | |||||||
| Pan g magnitude | 19.07 (0.009) | ||||||||
| Pan r magnitude | 19.54 (0.007) | ||||||||
| Pan i magnitude | 19.94 (0.01) | ||||||||
| Pan z magnitude | 20.16 (0.03) | ||||||||
| Pan y magnitude | 20.60 (0.2) | ||||||||
| E(B-V) | 0.027 | ||||||||
* 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.