All names: 2MASS J15423456+3547574, SDSS J154234.58+354757.1, WISEA J154234.58+354757.4, SDSS J154234.56+354757.1, Gaia EDR3 1374409364584441216, WD 1540+359, SDSS J154234.58+354757.0, TIC 17045663, WISE J154234.58+354757.4, SDSS J154234.59+354757.1, Gaia DR2 1374409364584441216
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 42 34.60 (0.4) | 15 42 34.59 | 15 42 34.60 (0.6) | 15 42 34.58 | 15 42 34.59 | 15 42 34.01 | |||
| Declination | 35 47 56.77 (0.3) | 35 47 57.11 | 35 47 56.78 (0.5) | 35 47 57.01 | 35 47 57.11 | 35 47 54.96 | |||
| Spectral type | DC+M | DC+M | DC: dM | ||||||
| Effective temperature | [K] | ||||||||
| log(g) | [cgs] | ||||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 5.90 (0.3) | 7.95 (0.6) | ||||||
| Distance | [pc] | 169.48 (9) | 125.76 (1e+01) | 1108.00 (186) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 9.346387612 (0.5) | -1.555189231 (1) | 0.0 (3) | |||||
| Proper motion (declination) | [mas/yr] | -8.106712969 (0.4) | -14.34728645 (1) | -4.0 (3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.35 (0.05) | ||||||||
| H magnitude | 14.72 (0.07) | ||||||||
| K magnitude | 14.73 (0.09) | ||||||||
| u magnitude | 18.92 (0.02) | 18.92 | 18.92 (0.02) | 18.92 | |||||
| g magnitude | 18.67 (0.008) | 18.73 | 18.67 (0.008) | 18.73 | |||||
| r magnitude | 18.47 (0.008) | 18.59 | 18.47 (0.008) | 18.58 | |||||
| i magnitude | 17.60 (0.007) | 17.70 | 17.60 (0.007) | 17.70 | |||||
| z magnitude | 16.82 (0.01) | 16.87 | 16.82 (0.01) | 16.87 | |||||
| G magnitude | 18.80 (0.05) | 18.84 | |||||||
| BP magnitude | 18.59 (0.05) | 18.62 | |||||||
| RP magnitude | 17.07 (0.04) | 17.08 | |||||||
| Pan g magnitude | 18.68 (0.01) | ||||||||
| Pan r magnitude | 18.61 (0.02) | ||||||||
| Pan i magnitude | 17.70 (0.009) | ||||||||
| Pan z magnitude | 17.00 (0.004) | ||||||||
| Pan y magnitude | 16.63 (0.009) | ||||||||
| E(B-V) | 0.020 | ||||||||
* 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.