All names: WD 2105+074, J2107+0740, GALEX J210745.0+074044, PM J21077+0740, WDJ210745.04+074044.48, PSO J316.9376+07.6785, 2MASS J21074505+0740442, Gaia DR2 1737167215848315264, Gaia EDR3 1737167215848315264, TIC 283712361, 21077+0740, Gaia DR3 1737167215848315264
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | 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 | 21 07 45.03 (0.04) | 21 07 45.03 (0.06) | 21 07 45.03 (0.06) | 21 07 45.03 | 21 07 45.04 (0.04) | 21 07 45.03 | 21 07 44.66 | |||||||
| Declination | 07 40 42.48 (0.03) | 07 40 42.54 (0.04) | 07 40 42.54 (0.04) | 07 40 42.48 | 07 40 44.49 (0.03) | 07 40 42.54 | 07 40 44.40 | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 7103.0 (64) | 6922.0 (21) | 7106.2 (41) | 7060.0 (55) | 7080.0 (116) | 7126.0 (32) | |||||||
| log(g) | [cgs] | 8.03 (0.03) | 7.96 (0.006) | 8.04 (0.02) | 8.04 (0.02) | 8.06 (0.1) | 8.04 (0.008) | |||||||
| Mass | [M☉] | 0.612 (0.02) | 0.571 (0.006) | 0.614 (0.01) | 0.63 (0.08) | 0.616 (0.007) | ||||||||
| log(Luminosity) | [L☉] | -3.47 | ||||||||||||
| Cooling age | [Gyr] | 1.5300 | 1.5610 (0.05) | |||||||||||
| 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] | 26.07 (0.05) | 26.07 (0.05) | 26.06 (0.09) | 26.06 (0.09) | 26.06 (0.09) | 26.06 (0.09) | 26.07 | 26.07 (0.05) | 26.06 (0.09) | ||||
| Distance | [pc] | 38.36 (0.08) | 38.36 (0.07) | 38.37 (0.1) | 38.38 (0.1) | 38.38 (0.1) | 38.38 (0.1) | 35.80 (1) | 38.36 | 38.36 (0.08) | 38.38 (0.1) | |||
| Composition | H | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -12.90254479 (0.05) | -12.90406319 (0.1) | -12.903 (0.05) | -12.90406319 | |||||||||
| Proper motion (declination) | [mas/yr] | -125.2674405 (0.03) | -125.0785708 (0.1) | -125.267 (0.03) | -125.0785708 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | 15.91 | |||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 15.74 (0.01) | 15.77 (0.09) | 15.77 | 15.77 (0.09) | ||||||||||
| H magnitude | 15.79 (0.2) | 15.79 (0.2) | 15.79 | 15.79 (0.2) | ||||||||||
| K magnitude | 15.14 (0.03) | 15.14 | ||||||||||||
| u magnitude | 17.06 (0.008) | 17.06 (0.008) | ||||||||||||
| g magnitude | 16.54 (0.004) | 16.53 (0.005) | ||||||||||||
| r magnitude | 16.38 (0.003) | 16.37 (0.005) | ||||||||||||
| i magnitude | 16.36 (0.002) | 16.34 (0.006) | ||||||||||||
| z magnitude | 16.41 (0.005) | 16.37 (0.008) | ||||||||||||
| G magnitude | 16.34 (0.003) | 16.36 | 16.36 | 16.34 | 16.34 (0.003) | 16.36 | ||||||||
| BP magnitude | 16.52 (0.003) | 16.52 | 16.52 | |||||||||||
| RP magnitude | 16.01 (0.003) | 16.03 | 16.03 | |||||||||||
| Pan g magnitude | 16.54 (0.004) | 16.54 (0.004) | 16.54 (0.004) | |||||||||||
| Pan r magnitude | 16.38 (0.004) | 16.38 (0.003) | 16.38 (0.003) | |||||||||||
| Pan i magnitude | 16.36 (0.002) | 16.36 (0.002) | 16.36 (0.002) | |||||||||||
| Pan z magnitude | 16.41 (0.005) | 16.41 (0.005) | 16.41 (0.005) | |||||||||||
| Pan y magnitude | 16.44 (0.004) | 16.44 (0.005) | 16.44 (0.005) | |||||||||||
| 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.