All names: Gaia DR3 803394802615200640, SDSS J100856.94+393838.5, Gaia EDR3 803394802615200640, SDSS J100856.94+393838.4, Gaia DR2 803394802615200640, SDSS J100856.94+393838.47, GALEX J100856.9+393839, SDSS J100856.95+393838.4
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 10 08 56.93 (0.2) | 10 08 56.95 | 10 08 56.95 | 10 08 56.93 (0.3) | 10 08 56.94 | 10 08 56.95 (0.2) | |||||
| Declination | 39 38 38.48 (0.2) | 39 38 38.41 | 39 38 38.41 | 39 38 38.47 (0.4) | 39 38 38.45 | 39 38 38.38 (0.2) | |||||
| Spectral type | DA+M | WD+MS | DA+M2 | DA | DA+MS | ||||||
| Effective temperature | [K] | 37481.0 (900) | 37857.0 (729) | 38739.0 (869) | |||||||
| log(g) | [cgs] | 7.77 (0.1) | 7.75 (0.1) | 7.91 (0.1) | |||||||
| Mass | [M☉] | 0.55 (0.05) | 0.55 (0.06) | 0.618 (0.06) | |||||||
| log(Luminosity) | [L☉] | -0.34 (0.09) | |||||||||
| Cooling age | [Gyr] | 0.0045 (0.0005) | |||||||||
| 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] | 1.63 (0.2) | 1.80 (0.5) | 1.63 (0.2) | |||||||
| Distance | [pc] | 614.25 (91) | 555.73 (165) | 1085.00 (102) | 614.25 (91) | ||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -15.16699929 (0.2) | -15.01426654 (0.6) | -15.167 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | 6.218007002 (0.2) | 5.87666312 (0.6) | 6.218 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.44 (0.01) | 18.44 (0.01) | 18.43 | 18.43 (0.02) | 18.44 (0.01) | ||||||
| g magnitude | 18.72 (0.008) | 18.72 (0.008) | 18.74 | 18.74 (0.02) | 18.72 (0.008) | ||||||
| r magnitude | 19.22 (0.01) | 19.22 (0.01) | 19.25 | 19.25 (0.03) | 19.22 (0.01) | ||||||
| i magnitude | 19.66 (0.02) | 19.66 (0.02) | 19.69 | 19.69 (0.1) | 19.66 (0.02) | ||||||
| z magnitude | 20.27 (0.1) | 20.27 (0.1) | 20.28 | 20.28 (0.4) | 20.27 (0.1) | ||||||
| G magnitude | 19.00 (0.03) | 19.04 | 19.00 (0.004) | ||||||||
| BP magnitude | 18.83 (0.03) | 18.69 | |||||||||
| RP magnitude | 18.81 (0.05) | 18.62 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.018 | ||||||||||
* 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.