All names: SDSS J074843.23+384218.6, Gaia EDR3 920086173530528256, GALEX J074843.2+384219, WDJ074837.2+384124.34, SDSS J074837.20+384124.4, WDJ074837.20+384124.35, Gaia DR3 920085456271916416, Gaia DR3 920086173530528256, Gaia DR2 920085456271916416
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 48 37.32 (0.2) | 07 48 37.32 | 07 48 37.32 | 07 48 43.24 (0.07) | 07 48 37.32 | ||||||
| Declination | 38 41 22.69 (0.1) | 38 41 22.75 | 38 41 22.69 | 38 42 18.64 (0.05) | 38 41 22.75 | ||||||
| Spectral type | DA | DA | B0V | ||||||||
| Effective temperature | [K] | 5890.0 (31) | 5887.0 | 5643.0 | 5885.0 (127) | ||||||
| log(g) | [cgs] | 7.96 (0.02) | 7.94 | 7.78 | 7.94 (0.05) | ||||||
| Mass | [M☉] | 0.563 (0.02) | 0.553 | 0.447 | 0.552 (0.04) | ||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 2.1390 | 2.2640 | ||||||||
| 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] | 11.92 (0.2) | 11.79 (0.3) | 11.92 | 4.09 (0.08) | 11.79 (0.3) | |||||
| Distance | [pc] | 83.86 (1) | 84.79 (2) | 83.86 | 244.44 (5) | 84.79 (2) | |||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 88.0508034 (0.2) | 88.63239333 (0.4) | 9.168 (0.08) | 88.63239333 | ||||||
| Proper motion (declination) | [mas/yr] | -103.3670989 (0.1) | -103.3004335 (0.3) | -12.381 (0.06) | -103.3004335 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.94 (0.03) | 19.98 (0.04) | |||||||||
| g magnitude | 18.88 (0.009) | 19.05 (0.01) | |||||||||
| r magnitude | 17.89 (0.006) | 18.64 (0.01) | |||||||||
| i magnitude | 16.59 (0.005) | 18.50 (0.01) | |||||||||
| z magnitude | 15.83 (0.006) | 18.48 (0.04) | |||||||||
| G magnitude | 18.67 (0.03) | 18.69 | 18.67 | 17.24 (0.003) | 18.69 | ||||||
| BP magnitude | 18.98 (0.03) | 19.06 | 19.06 | ||||||||
| RP magnitude | 18.15 (0.03) | 18.20 | 18.20 | ||||||||
| Pan g magnitude | 19.01 (0.007) | ||||||||||
| Pan r magnitude | 18.66 (0.007) | ||||||||||
| Pan i magnitude | 18.54 (0.004) | ||||||||||
| Pan z magnitude | 18.51 (0.009) | ||||||||||
| Pan y magnitude | 18.45 (0.05) | ||||||||||
| E(B-V) | 0.002 | ||||||||||
* 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.