All names: Gaia DR3 4465088893307459712, SDSS J161815.53+154715.1, Gaia EDR3 4465088893307459712, Gaia DR2 4465088893307459712, GALEX J161815.5+154714
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 18 15.52 (0.08) | 16 18 15.53 | 16 18 15.52 (0.1) | 16 18 15.54 (0.08) | 16 18 15.53 | ||||
| Declination | 15 47 15.03 (0.07) | 15 47 15.15 | 15 47 15.03 (0.09) | 15 47 15.17 (0.07) | 15 47 15.13 | ||||
| Spectral type | DAO | DAO | DAOH: | ||||||
| Effective temperature | [K] | 66716.0 (4389) | 73469.0 (1928) | ||||||
| log(g) | [cgs] | 7.21 (0.2) | 6.89 (0.08) | ||||||
| Mass | [M☉] | 0.45 (0.04) | |||||||
| log(Luminosity) | [L☉] | 1.14 (0.2) | |||||||
| Cooling age | [Gyr] | 0.0001 | |||||||
| 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] | 0.73 (0.1) | 0.83 (0.1) | 0.73 (0.1) | |||||
| Distance | [pc] | 1364.52 (179) | 1211.99 (194) | 1364.44 (179) | |||||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -17.38783544 (0.09) | -17.19588533 (0.2) | -17.388 (0.09) | |||||
| Proper motion (declination) | [mas/yr] | -8.726377484 (0.09) | -8.885705439 (0.2) | -8.726 (0.09) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 16.90 (0.008) | 16.90 (0.008) | 16.93 (0.02) | ||||||
| g magnitude | 17.36 (0.005) | 17.36 (0.005) | 17.40 (0.02) | ||||||
| r magnitude | 17.92 (0.007) | 17.92 (0.007) | 17.92 (0.01) | ||||||
| i magnitude | 18.27 (0.01) | 18.27 (0.01) | 18.27 (0.02) | ||||||
| z magnitude | 18.58 (0.03) | 18.58 (0.04) | 18.58 (0.04) | ||||||
| G magnitude | 17.65 (0.007) | 17.68 | 17.65 (0.003) | ||||||
| BP magnitude | 17.47 (0.007) | 17.40 | |||||||
| RP magnitude | 18.00 (0.02) | 17.93 | |||||||
| Pan g magnitude | 17.45 (0.005) | ||||||||
| Pan r magnitude | 17.92 (0.005) | ||||||||
| Pan i magnitude | 18.30 (0.003) | ||||||||
| Pan z magnitude | 18.58 (0.01) | ||||||||
| Pan y magnitude | 18.76 (0.01) | ||||||||
| E(B-V) | 0.044 | ||||||||
* 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.