All names: 2MASS J15442180+3907162, Gaia DR3 1377562965796417024, Gaia DR2 1377562965796417024, SDSS J154421.81+390716.1, TIC 321599125, SDSS J154421.81+390716.2, Gaia EDR3 1377562965796417024, WD 1542+392, SDSS J154421.80+390716.1
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 15 44 21.81 (0.1) | 15 44 21.80 | 15 44 21.81 (0.1) | 15 44 21.80 (0.1) | 15 44 21.67 | ||
| Declination | 39 07 16.02 (0.1) | 39 07 16.16 | 39 07 16.02 (0.2) | 39 07 16.10 (0.1) | 39 07 13.80 | ||
| Spectral type | DC | DC: d | |||||
| 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] | 1.35 (0.2) | 1.38 (0.2) | 1.35 (0.2) | |||
| Distance | [pc] | 738.77 (86) | 724.72 (103) | 738.77 (86) | |||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 6.206598858 (0.2) | 6.424264665 (0.3) | 6.207 (0.2) | |||
| Proper motion (declination) | [mas/yr] | -5.007512042 (0.2) | -4.507011271 (0.4) | -5.008 (0.2) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 16.40 (0.1) | ||||||
| H magnitude | 15.58 (0.1) | ||||||
| K magnitude | 15.28 (0.1) | ||||||
| u magnitude | 23.62 (0.5) | 23.80 (0.7) | 23.79 | ||||
| g magnitude | 21.21 (0.04) | 21.21 (0.04) | 21.28 | ||||
| r magnitude | 19.38 (0.01) | 19.37 (0.01) | 19.40 | ||||
| i magnitude | 18.13 (0.008) | 18.13 (0.008) | 18.15 | ||||
| z magnitude | 17.49 (0.01) | 17.50 (0.01) | 17.53 | ||||
| G magnitude | 18.88 (0.09) | 18.90 | 18.88 (0.003) | ||||
| BP magnitude | 20.26 (0.09) | 20.25 | |||||
| RP magnitude | 17.75 (0.01) | 17.72 | |||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.023 | ||||||
* 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.