All names: SDSS J153642.56+210747.4, TIC 459257267, 2MASS J15364254+2107475, SDSS J153642.56+210747.5, Gaia DR2 1211178681528576256, Gaia DR3 1211178681528576256, Gaia EDR3 1211178681528576256, GALEX J153642.6+210747
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 36 42.53 (0.3) | 15 36 42.56 | 15 36 42.53 (0.5) | 15 36 42.56 | 15 36 42.56 (0.3) | 15 36 42.56 | |||
| Declination | 21 07 47.64 (0.3) | 21 07 47.46 | 21 07 47.63 (0.4) | 21 07 47.46 | 21 07 47.38 (0.3) | 21 07 47.47 | |||
| Spectral type | DA+M | DA+M | DA+M | ||||||
| Effective temperature | [K] | 36154.0 (729) | 6300.0 (3) | ||||||
| log(g) | [cgs] | 7.78 (0.1) | 5.01 (0.01) | ||||||
| Mass | [M☉] | 0.56 (0.06) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 3.42 (0.4) | 2.86 (0.7) | 3.42 (0.4) | |||||
| Distance | [pc] | 292.81 (37) | 349.20 (89) | 629.00 (56) | 292.81 (37) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -20.53432304 (0.4) | -17.567 (1) | -20.534 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | 16.05771588 (0.3) | 20.325 (0.7) | 16.058 (0.3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.69 (0.04) | ||||||||
| H magnitude | 14.05 (0.04) | ||||||||
| K magnitude | 13.90 (0.05) | ||||||||
| u magnitude | 17.72 (0.01) | 17.74 | 17.73 (0.01) | 17.74 (0.02) | |||||
| g magnitude | 17.59 (0.005) | 17.63 | 17.59 (0.005) | 17.63 (0.02) | |||||
| r magnitude | 17.05 (0.005) | 17.12 | 17.05 (0.005) | 17.12 (0.01) | |||||
| i magnitude | 16.41 (0.005) | 16.44 | 16.41 (0.005) | 16.44 (0.01) | |||||
| z magnitude | 15.98 (0.007) | 16.01 | 15.98 (0.007) | 16.01 (0.02) | |||||
| G magnitude | 17.20 (0.006) | 17.03 | 17.20 (0.004) | ||||||
| BP magnitude | 17.43 (0.006) | 17.38 | |||||||
| RP magnitude | 16.04 (0.003) | 16.06 | |||||||
| Pan g magnitude | 17.60 (0.01) | ||||||||
| Pan r magnitude | 17.10 (0.007) | ||||||||
| Pan i magnitude | 16.48 (0.003) | ||||||||
| Pan z magnitude | 16.12 (0.005) | ||||||||
| Pan y magnitude | 15.90 (0.002) | ||||||||
| E(B-V) | 0.051 | ||||||||
* 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.