All names: SDSS J151752.85+531455.5, SDSS J151752.86+531455.6, Gaia DR2 1599045839316750464, [HHD2009] SDSS J1517+5314, WIRED J151752.86+531455.6, WD 1516+534, Gaia EDR3 1599045843612283392, Gaia DR3 1599045843612283392, GALEX J151752.9+531456, SDSS J151752.86+531455.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 17 52.87 (0.3) | 15 17 52.86 | 15 17 52.87 (0.4) | 15 17 52.86 | 15 17 52.88 (0.3) | 15 17 52.86 | 15 17 52.73 | 15 17 52.86 | ||||
| Declination | 53 14 55.67 (0.4) | 53 14 55.60 | 53 14 55.67 (0.4) | 53 14 55.61 | 53 14 55.57 (0.4) | 53 14 55.53 | 53 14 54.60 | 53 14 55.60 | ||||
| Spectral type | DA+M | DA+M | DA+M | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 30204.0 (342) | 30419.0 (847) | 9140.0 (66) | 9499.0 (98) | |||||||
| log(g) | [cgs] | 7.95 (0.09) | 7.90 (0.2) | 9.00 (0.008) | 9.65 (0.1) | |||||||
| Mass | [M☉] | 0.62 (0.05) | 0.59 (0.1) | |||||||||
| log(Luminosity) | [L☉] | -0.85 (0.06) | ||||||||||
| Cooling age | [Gyr] | 0.0087 (0.0004) | ||||||||||
| 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] | 1.73 (0.4) | 2.86 (0.4) | 1.73 (0.4) | ||||||||
| Distance | [pc] | 576.56 (121) | 349.89 (54) | 46.00 (2) | 576.57 (121) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.761487371 (0.4) | -3.355779504 (0.7) | -3.761 (0.4) | -3.3 | |||||||
| Proper motion (declination) | [mas/yr] | 6.059889599 (0.5) | 9.820683506 (1) | 6.06 (0.5) | 4.2 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 18.76 (0.02) | 18.75 | 18.76 (0.02) | 18.75 (0.02) | 18.75 | 18.76 (0.02) | ||||||
| g magnitude | 18.94 (0.009) | 18.97 | 18.94 (0.009) | 18.97 (0.02) | 18.97 | 18.96 (0.02) | ||||||
| r magnitude | 19.24 (0.01) | 19.26 | 19.24 (0.01) | 19.26 (0.02) | 19.26 | 19.25 (0.02) | ||||||
| i magnitude | 19.12 (0.02) | 19.12 | 19.12 (0.02) | 19.12 (0.02) | 19.12 | 19.12 (0.02) | ||||||
| z magnitude | 18.83 (0.05) | 18.80 | 18.83 (0.05) | 18.80 (0.05) | 18.80 | 18.81 (0.05) | ||||||
| G magnitude | 19.26 (0.02) | 19.21 | 19.26 (0.006) | |||||||||
| BP magnitude | 19.06 (0.02) | 19.02 | ||||||||||
| RP magnitude | 18.76 (0.03) | 18.71 | ||||||||||
| Pan g magnitude | 19.01 (0.008) | |||||||||||
| Pan r magnitude | 19.28 (0.004) | |||||||||||
| Pan i magnitude | 19.13 (0.008) | |||||||||||
| Pan z magnitude | 18.90 (0.02) | |||||||||||
| Pan y magnitude | 18.76 (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.