All names: Gaia EDR3 1192958266325186560, Gaia DR3 1192958266325186560, TIC 393633593, [SGR2010] J1557+1515, SDSS J155712.05+151534.3, SDSS J155712.06+151534.3, WD 1554+154, WIRED J155712.05+151534.3, Gaia DR2 1192958266325186560, 2MASS J15571204+1515343
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 57 12.06 (0.3) | 15 57 12.05 | 15 57 12.06 (0.3) | 15 57 12.06 | 15 57 12.06 (0.3) | 15 57 12.07 | 15 57 12.06 | ||||
| Declination | 15 15 34.07 (0.2) | 15 15 34.32 | 15 15 34.09 (0.2) | 15 15 34.34 | 15 15 34.44 (0.2) | 15 15 30.24 | 15 15 34.34 | ||||
| Spectral type | DA+M | DA+M | DA+M2 | DA1.2+M2 | DA+M | ||||||
| Effective temperature | [K] | 43315.0 (1845) | 42740.0 (1784) | 10080.0 (2) | |||||||
| log(g) | [cgs] | 7.77 (0.2) | 7.91 (0.2) | 8.21 (0.2) | |||||||
| Mass | [M☉] | 0.57 (0.08) | 0.63 (0.09) | ||||||||
| log(Luminosity) | [L☉] | -0.08 (0.1) | |||||||||
| Cooling age | [Gyr] | 0.0030 (0.0007) | |||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(C/H) | |||||||||||
| log(N/H) | |||||||||||
| log(O/H) | |||||||||||
| log(Na/H) | |||||||||||
| log(Mg/H) | |||||||||||
| log(Al/H) | |||||||||||
| log(Si/H) | |||||||||||
| log(P/H) | |||||||||||
| log(S/H) | |||||||||||
| log(Sc/H) | |||||||||||
| log(Ti/H) | |||||||||||
| log(Cr/H) | |||||||||||
| log(Mn/H) | |||||||||||
| log(Fe/H) | |||||||||||
| log(Ni/H) | |||||||||||
| Parallax | [mas] | 1.82 (0.3) | 1.35 (0.3) | 1.82 (0.3) | |||||||
| Distance | [pc] | 549.40 (96) | 739.60 (176) | 709.00 (90) | 549.39 (96) | ||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 3.403308697 (0.3) | 4.400411683 (0.5) | 3.403 (0.3) | |||||||
| Proper motion (declination) | [mas/yr] | -22.91579082 (0.3) | -21.97820155 (0.4) | -22.916 (0.3) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | yes | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.80 (0.08) | ||||||||||
| H magnitude | 15.42 (0.1) | ||||||||||
| K magnitude | 14.89 (0.1) | ||||||||||
| u magnitude | 17.81 (0.01) | 17.82 | 17.84 (0.01) | 17.83 | 17.82 (0.02) | ||||||
| g magnitude | 17.99 (0.006) | 18.02 | 18.00 (0.006) | 17.99 | 18.02 (0.02) | ||||||
| r magnitude | 17.91 (0.007) | 17.92 | 17.91 (0.007) | 17.91 | 17.92 (0.01) | ||||||
| i magnitude | 17.40 (0.006) | 17.40 | 17.39 (0.006) | 17.39 | 17.40 (0.01) | ||||||
| z magnitude | 16.98 (0.01) | 16.98 | 16.98 (0.01) | 16.98 | 16.99 (0.02) | ||||||
| G magnitude | 17.77 (0.01) | 17.70 | 17.77 (0.007) | ||||||||
| BP magnitude | 18.00 (0.01) | 17.95 | |||||||||
| RP magnitude | 17.02 (0.008) | 17.04 | |||||||||
| Pan g magnitude | 18.04 (0.007) | ||||||||||
| Pan r magnitude | 17.94 (0.003) | ||||||||||
| Pan i magnitude | 17.42 (0.002) | ||||||||||
| Pan z magnitude | 17.09 (0.004) | ||||||||||
| Pan y magnitude | 16.90 (0.01) | ||||||||||
| E(B-V) | 0.038 | ||||||||||
* 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.