All names: SDSS J153934.63+092221.6, GALEX J153934.6+092222, Gaia EDR3 1164876150938992256, WIRED J153934.63+092221.5, Gaia DR2 1164876150938992256, [SGR2010] J1539+0922, SDSS J153934.63+092221.5, LAMOST J153934.63+092221.5, WD 1537+095, Gaia DR3 1164876150938992256, 2MASS J15393462+0922215, TIC 460433555
| 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) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 39 34.63 (0.1) | 15 39 34.63 | 15 39 34.63 (0.1) | 15 39 34.63 | 15 39 34.64 (0.1) | 15 39 34.70 | 15 39 34.63 | ||||
| Declination | 09 22 21.93 (0.08) | 09 22 21.52 | 09 22 21.91 (0.1) | 09 22 21.54 | 09 22 21.43 (0.08) | 09 22 19.56 | 09 22 21.56 | ||||
| Spectral type | DA+M | DA+M | DA2.8+M5 | DA+M | CV: | ||||||
| Effective temperature | [K] | 17707.0 (453) | 8762.0 (53) | ||||||||
| log(g) | [cgs] | 8.28 (0.1) | 7.22 (0.1) | ||||||||
| Mass | [M☉] | 0.79 (0.06) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.98 (0.1) | 2.85 (0.2) | 2.98 (0.1) | |||||||
| Distance | [pc] | 335.36 (13) | 350.57 (21) | 274.00 (20) | 335.36 (13) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.093456646 (0.1) | -8.897871025 (0.3) | -9.093 (0.1) | |||||||
| Proper motion (declination) | [mas/yr] | 31.02090519 (0.1) | 31.03107543 (0.3) | 31.021 (0.1) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | yes | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.16 (0.003) | ||||||||||
| H magnitude | 14.60 (0.004) | ||||||||||
| K magnitude | 14.28 (0.006) | ||||||||||
| u magnitude | 18.76 (0.02) | 18.75 | 18.77 (0.02) | 18.75 | 18.75 (0.03) | ||||||
| g magnitude | 18.41 (0.007) | 18.39 | 18.39 (0.007) | 18.39 | 18.39 (0.02) | ||||||
| r magnitude | 18.35 (0.008) | 18.36 | 18.35 (0.008) | 18.35 | 18.36 (0.01) | ||||||
| i magnitude | 17.53 (0.006) | 17.51 | 17.51 (0.006) | 17.51 | 17.51 (0.02) | ||||||
| z magnitude | 16.74 (0.009) | 16.72 | 16.71 (0.01) | 16.71 | 16.72 (0.02) | ||||||
| G magnitude | 17.85 (0.01) | 17.86 | 17.85 (0.003) | ||||||||
| BP magnitude | 18.46 (0.01) | 18.41 | |||||||||
| RP magnitude | 16.98 (0.01) | 16.99 | |||||||||
| Pan g magnitude | 18.38 (0.007) | ||||||||||
| Pan r magnitude | 18.33 (0.007) | ||||||||||
| Pan i magnitude | 17.52 (0.004) | ||||||||||
| Pan z magnitude | 16.86 (0.005) | ||||||||||
| Pan y magnitude | 16.49 (0.009) | ||||||||||
| E(B-V) | 0.031 | ||||||||||
* 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.