All names: LEHPM 3936, WDJ201221.17-703642.44, Gaia DR2 6422387644229686272, Gaia DR3 6422387644229686272, LEP2012-7036, 2MASS J20122116-7036427, Gaia EDR3 6422387644229686272, TIC 265284160
| Parameter | Unit | Gaia EDR3 | Subasavage et al. 2022 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 12 21.58 (0.09) | 20 12 21.57 | 20 12 21.58 | 20 12 21.17 (0.09) | 20 12 21.57 | |||
| Declination | -70 36 45.10 (0.1) | -70 36 45.02 | -70 36 45.10 | -70 36 42.43 (0.1) | -70 36 45.02 | |||
| Spectral type | DC | DA | DA | |||||
| Effective temperature | [K] | 5390.0 (127) | 5880.0 (29) | |||||
| log(g) | [cgs] | 7.43 (0.07) | 7.73 (0.01) | |||||
| Mass | [M☉] | 0.291 (0.03) | 0.439 (0.01) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| 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] | 20.70 (0.1) | 21.94 (0.2) | 21.94 (0.2) | 20.70 | 20.70 (0.1) | 21.94 (0.2) | |
| Distance | [pc] | 48.31 (0.3) | 45.58 (0.3) | 45.58 (0.3) | 48.31 | 48.31 (0.3) | 45.58 (0.3) | |
| Composition | He | |||||||
| Proper motion (right ascension) | [mas/yr] | 127.0548608 (0.1) | 126.3958587 (0.2) | 127.055 (0.1) | 126.3958587 | |||
| Proper motion (declination) | [mas/yr] | -166.5447401 (0.1) | -166.0563672 (0.2) | -166.545 (0.1) | -166.0563672 | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 17.86 | |||||||
| V magnitude | 17.34 | |||||||
| R magnitude | 16.95 | |||||||
| I magnitude | 16.55 | |||||||
| J magnitude | 16.11 | 16.11 (0.09) | ||||||
| H magnitude | 16.09 | 16.09 (0.2) | ||||||
| K magnitude | 15.56 | 15.56 (0.2) | ||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 17.19 (0.007) | 17.20 | 17.19 | 17.19 (0.003) | 17.20 | |||
| BP magnitude | 17.50 (0.007) | 17.52 | 17.52 | |||||
| RP magnitude | 16.70 (0.004) | 16.72 | 16.72 | |||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.004 | |||||||
* 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.