All names: SDSS J154219.44+032311.0, SDSS J154219.44+032310.9, [SGR2010] J154219.44+032310.9, [SHW2006] J154219.44+032310.9, [SGR2010] J1542+0323, WD 1538+035A, WD 1539+035, [RGS2010] J154219.44+032310.9, WIRED J154219.44+032310.9, [SLH2007] J154219.45+032311.0, 2MASS J15421943+0323105, SDSS J154219.45+032311.0, [HHD2009] SDSS J1542+0323, [RGR2007] J154219.44+032310.9, PSO J154219.427+032310.712, Gaia DR2 4424532616640866560, WD 1538+035.1
| Parameter | Unit | Pan-STARRS DR1 | Gaia DR2 | sdss-wdms.org (29/04/2016) | SDSS DR12 | Simbad | Eisenstein et al. 2006 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 42 19.42 (0.2) | 15 42 19.44 | 15 42 19.45 | 15 42 19.44 | 15 42 19.45 | 15 42 19.45 | 15 42 18.46 | 15 41 29.45 | 15 42 19.45 | 15 42 19.45 | ||
| Declination | 03 23 10.66 (0.2) | 03 23 10.90 | 03 23 11.01 | 03 23 10.50 | 03 23 11.00 | 03 23 11.00 | 03 23 04.92 | 03 23 08.16 | 03 23 10.99 | 03 23 10.99 | ||
| Spectral type | DA+M | DA+dM | DA+M | DA+M | DA+M | DA3.1 | DA+M | DA+M | ||||
| Effective temperature | [K] | 10550.0 (472) | 6300.0 (2) | 6300.0 (1) | 6300.0 (1) | 6300.0 (1) | ||||||
| log(g) | [cgs] | 8.27 (0.4) | 7.03 (0.1) | 7.68 (0.4) | 6.89 (0.3) | 5.97 (0.2) | ||||||
| Mass | [M☉] | 0.775 (0.3) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 1.59 (0.3) | ||||||||||
| Distance | [pc] | 628.44 (108) | 464.00 (145) | |||||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -12.580608499 (0.5) | -2.0 | 1.9 | 1.9 | |||||||
| Proper motion (declination) | [mas/yr] | -1.8137673161 (0.4) | -1.0 | 3.5 | 3.5 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | WDMS | WDMS | |||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.20 | |||||||||||
| H magnitude | 15.62 | |||||||||||
| K magnitude | 15.35 | |||||||||||
| u magnitude | 19.74 | 19.72 (0.04) | 19.67 | 19.74 (0.04) | 19.74 (0.04) | 19.75 | 17.02 | 19.76 (0.04) | 19.76 (0.04) | |||
| g magnitude | 19.47 | 19.31 (0.01) | 19.31 | 19.47 (0.02) | 19.47 (0.02) | 19.47 | 16.70 | 19.47 (0.02) | 19.47 (0.02) | |||
| r magnitude | 19.12 | 18.93 (0.01) | 18.93 | 19.12 (0.02) | 19.12 (0.02) | 19.12 | 16.98 | 19.12 (0.02) | 19.12 (0.02) | |||
| i magnitude | 18.15 | 18.03 (0.009) | 18.03 | 18.16 (0.02) | 18.16 (0.02) | 18.16 | 17.17 | 18.16 (0.02) | 18.16 (0.02) | |||
| z magnitude | 17.54 | 17.44 (0.02) | 17.41 | 17.54 (0.03) | 17.54 (0.03) | 17.52 | 17.46 | 17.56 (0.03) | 17.56 (0.03) | |||
| G magnitude | 19.00 | |||||||||||
| BP magnitude | 19.23 | |||||||||||
| RP magnitude | 17.71 | |||||||||||
| Pan g magnitude | 19.40 (0.04) | |||||||||||
| Pan r magnitude | 19.03 (0.02) | |||||||||||
| Pan i magnitude | 18.18 (0.006) | |||||||||||
| Pan z magnitude | 17.64 (0.007) | |||||||||||
| Pan y magnitude | 17.39 (0.009) |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.