All names: TIC 17787432, 18073+0357, Gaia DR3 4470233817461336704, PM J18073+0357, WD 1804+039, Gaia EDR3 4470233817461336704, WDJ180723.38+035701.80, J1807+0356, 2MASS J18072337+0357018, SDSS J180723.38+035701.1, Gaia DR2 4470233817461336704
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 07 23.38 (0.02) | 18 07 23.38 (0.03) | 18 07 23.38 (0.03) | 18 07 23.38 | 18 07 23.38 (0.02) | 18 07 23.38 | 18 07 23.18 | ||||||||
| Declination | 03 56 59.77 (0.02) | 03 56 59.84 (0.04) | 03 56 59.84 (0.04) | 03 56 59.77 | 03 57 01.80 (0.02) | 03 56 59.84 | 03 56 56.76 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 10247.0 (40) | 10229.0 (91) | 10176.0 (33) | 10247.0 (40) | 10330.7 (44) | 10410.0 (150) | 10149.0 (44) | |||||||
| log(g) | [cgs] | 8.08 (0.005) | 8.07 (0.02) | 8.07 (0.005) | 8.08 (0.005) | 8.09 (0.01) | 8.09 (0.05) | 8.06 (0.007) | |||||||
| Mass | [M☉] | 0.647 (0.004) | 0.641 (0.01) | 0.64 (0.004) | 0.649 (0.004) | 0.65 (0.03) | 0.635 (0.005) | ||||||||
| log(Luminosity) | [L☉] | -2.81 | |||||||||||||
| Cooling age | [Gyr] | 0.6600 | |||||||||||||
| 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] | 33.14 (0.02) | 33.14 (0.02) | 33.18 (0.04) | 33.18 (0.04) | 33.18 (0.04) | 33.14 | 33.14 (0.02) | 33.18 (0.04) | ||||||
| Distance | [pc] | 30.17 (0.02) | 30.18 (0.02) | 30.14 (0.04) | 30.14 (0.03) | 30.14 (0.03) | 34.70 (2) | 30.17 | 30.17 (0.02) | 30.14 (0.03) | |||||
| Composition | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.498919448 (0.03) | 2.520864873 (0.07) | 2.499 (0.03) | 2.520864873 | ||||||||||
| Proper motion (declination) | [mas/yr] | -127.032974 (0.02) | -126.9840608 (0.06) | -127.033 (0.02) | -126.9840608 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | 15.08 | ||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 14.57 (0.04) | 14.57 | 14.57 (0.04) | ||||||||||||
| H magnitude | 14.51 (0.08) | 14.51 | 14.51 (0.08) | ||||||||||||
| K magnitude | 14.46 (0.07) | 14.46 | 14.46 (0.07) | ||||||||||||
| u magnitude | 14.99 (0.004) | 15.36 (0.006) | 15.00 (0.004) | ||||||||||||
| g magnitude | 14.96 (0.005) | 14.57 (0.003) | |||||||||||||
| r magnitude | 16.27 (0.01) | 14.68 (0.003) | |||||||||||||
| i magnitude | 15.14 (0.006) | 14.81 (0.003) | |||||||||||||
| z magnitude | 15.28 (0.007) | 15.01 (0.004) | |||||||||||||
| G magnitude | 14.60 (0.001) | 14.62 | 14.62 | 14.60 | 14.60 (0.003) | 14.62 | |||||||||
| BP magnitude | 14.65 (0.001) | 14.64 | 14.64 | ||||||||||||
| RP magnitude | 14.52 (0.001) | 14.53 | 14.53 | ||||||||||||
| Pan g magnitude | 14.61 (0.002) | 14.61 (0.004) | |||||||||||||
| Pan r magnitude | 14.71 (0.005) | 14.71 (0.006) | |||||||||||||
| Pan i magnitude | 14.85 (0.002) | 14.85 (0.002) | |||||||||||||
| Pan z magnitude | 15.01 (0.003) | 15.01 (0.002) | |||||||||||||
| Pan y magnitude | 15.13 (0.002) | 15.13 (0.002) | |||||||||||||
| E(B-V) | 0.001 | ||||||||||||||
* 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.