All names: SDSS J160935.75+065509.8, SDSS J160935.76+065509.9, Gaia DR3 4450425359563998720, J1609+0655, WDJ160935.76+065509.73, GALEX J160935.7+065510, Gaia DR2 4450425359563998720
| Parameter | Unit | SDSS DR10 | Kilic et al. 2025 | Caron et al. 2023 | Coutu et al. 2019 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 09 35.76 | 16 09 35.87 | 16 09 35.74 | 16 09 35.76 (0.07) | 16 09 35.74 | |||||
| Declination | 06 55 09.89 | 06 55 11.97 | 06 55 10.54 | 06 55 09.73 (0.05) | 06 55 10.52 | |||||
| Spectral type | DA | DQ | DQ | DQ | DC: | DQ | DQ | |||
| Effective temperature | [K] | 9115.0 (94) | 7808.0 (59) | 6828.0 (333) | 7860.0 (23) | 8217.0 (113) | ||||
| log(g) | [cgs] | 8.32 (0.02) | 7.91 (0.02) | 7.76 | 8.00 (0) | 8.03 (0.02) | ||||
| Mass | [M☉] | 0.803 (0.01) | 0.525 (0.01) | 0.4397 | 0.592 (0.02) | |||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 1.1000 | 1.2200 | |||||||
| log(H/He) | ||||||||||
| log(C/He) | -5.79 | -6.7258 (0.07) | -5.909 (0.04) | |||||||
| 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] | 11.69 (0.1) | 11.69 | 11.70 | 11.70 (0.1) | 11.69 (0.1) | ||||
| Distance | [pc] | 85.54 (1) | 85.57 (0.9) | 85.49 | 85.49 (0.7) | 85.57 (0.9) | ||||
| Composition | H | He | He | He | ||||||
| Proper motion (right ascension) | [mas/yr] | -19.153 (0.1) | -19.157 | |||||||
| Proper motion (declination) | [mas/yr] | 50.972 (0.07) | 50.875 | |||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 17.45 (0.03) | |||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 17.99 (0.01) | 18.04 (0.01) | 17.99 (0.01) | 17.99 (0.01) | 17.99 (0.01) | |||||
| g magnitude | 17.73 (0.006) | 17.73 (0.01) | 17.73 (0.006) | 17.73 (0.006) | ||||||
| r magnitude | 17.71 (0.006) | 17.71 (0.01) | 17.71 (0.006) | 17.71 (0.006) | ||||||
| i magnitude | 17.79 (0.007) | 17.79 (0.01) | 17.80 (0.007) | 17.80 (0.007) | ||||||
| z magnitude | 17.94 (0.02) | 17.94 (0.02) | 17.94 (0.02) | 17.94 (0.02) | ||||||
| G magnitude | 17.65 | 17.65 (0.003) | 17.68 | |||||||
| BP magnitude | 17.71 | |||||||||
| RP magnitude | 17.45 | |||||||||
| Pan g magnitude | 17.74 (0.009) | |||||||||
| Pan r magnitude | 17.71 (0.003) | |||||||||
| Pan i magnitude | 17.81 (0.005) | |||||||||
| Pan z magnitude | 17.93 (0.008) | |||||||||
| Pan y magnitude | 18.03 (0.01) | |||||||||
| E(B-V) | 0.006 | |||||||||
* 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.