All names: WIRED J155554.25+545417.4, Gaia DR3 1597549270847251072, SDSS J155554.25+545417.5, [HHD2009] SDSS J1555+5454, SDSS J155554.25+545417.4, SDSS J155554.24+545417.4, WISE J155554.24+545417.7, Gaia EDR3 1597549270847251072, WISEA J155554.23+545417.7, WD 1554+550
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 55 54.26 (3) | 15 55 54.25 | 15 55 54.25 | 15 55 54.26 (3) | 15 55 54.26 | 15 55 53.21 | 15 55 54.25 | ||||
| Declination | 54 54 17.67 (3) | 54 54 17.45 | 54 54 17.39 | 54 54 17.67 (3) | 54 54 17.52 | 54 54 15.48 | 54 54 17.44 | ||||
| Spectral type | DA+M | DA | DA+dM | DA+M | DA+M | DA+M | |||||
| Effective temperature | [K] | 28389.0 (843) | 30120.0 (830) | 7521.0 (63) | 7154.0 (66) | ||||||
| log(g) | [cgs] | 8.05 (0.2) | 7.87 (0.2) | 8.15 (0.1) | 7.37 (0.2) | ||||||
| Mass | [M☉] | 0.67 (0.1) | 0.58 (0.08) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0110 | |||||||||
| 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] | ||||||||||
| Distance | [pc] | 586.00 (38) | |||||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 12.0 (3) | 11.0 | ||||||||
| Proper motion (declination) | [mas/yr] | 17.0 (3) | 13.8 | ||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | yes | WDMS | |||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.80 (0.02) | 18.79 | 18.80 (0.02) | 18.79 (0.03) | 18.78 | 18.77 (0.03) | |||||
| g magnitude | 18.83 (0.009) | 18.86 | 18.83 (0.009) | 18.86 (0.02) | 18.86 | 18.85 (0.02) | |||||
| r magnitude | 18.82 (0.01) | 18.84 | 18.82 (0.01) | 18.84 (0.02) | 18.83 | 18.83 (0.02) | |||||
| i magnitude | 18.29 (0.009) | 18.30 | 18.29 (0.009) | 18.30 (0.02) | 18.30 | 18.30 (0.02) | |||||
| z magnitude | 17.88 (0.02) | 17.90 | 17.88 (0.02) | 17.90 (0.03) | 17.89 | 17.89 (0.03) | |||||
| G magnitude | 19.05 (0.02) | 19.05 (0.02) | |||||||||
| BP magnitude | 18.82 (0.02) | ||||||||||
| RP magnitude | 17.93 (0.02) | ||||||||||
| Pan g magnitude | 18.85 (0.009) | ||||||||||
| Pan r magnitude | 18.82 (0.004) | ||||||||||
| Pan i magnitude | 18.31 (0.005) | ||||||||||
| Pan z magnitude | 17.96 (0.004) | ||||||||||
| Pan y magnitude | 17.74 (0.02) | ||||||||||
| 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.