All names: SDSS J103455.90+240905.7, GALEX J103455.9+240905, SDSS J103455.91+240905.8, Gaia EDR3 724076819761864960, SDSS J103455.91+240905.80, SDSS J103455.90+240905.8, Gaia DR3 724076819761864960, EQ J1034+2409, Gaia DR2 724076819761864960, LAMOST J103455.90+240905.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 10 34 55.90 (0.1) | 10 34 55.91 | 10 34 55.90 (0.2) | 10 34 55.90 | 10 34 55.90 (0.1) | 10 34 55.91 | |||||||
| Declination | 24 09 05.64 (0.09) | 24 09 05.81 | 24 09 05.64 (0.1) | 24 09 05.64 | 24 09 05.83 (0.09) | 24 09 05.82 | |||||||
| Spectral type | DOA | DB: | DAO | DBAH: | DO: | ||||||||
| Effective temperature | [K] | 49081.0 (242) | 48474.0 | 52475.0 | 50000.0 (50) | ||||||||
| log(g) | [cgs] | 8.07 (0.08) | 7.72 | 8.18 | 8.11 (0.04) | ||||||||
| Mass | [M☉] | 0.68 (0.04) | 0.521 | 0.746 | |||||||||
| log(Luminosity) | [L☉] | -0.08 (0.06) | |||||||||||
| Cooling age | [Gyr] | 0.0023 (0.0001) | |||||||||||
| log(H/He) | <-2.517 | ||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(N/He) | |||||||||||||
| log(O/He) | |||||||||||||
| log(Na/He) | |||||||||||||
| log(Mg/He) | |||||||||||||
| log(Al/He) | |||||||||||||
| log(Si/He) | |||||||||||||
| log(P/He) | |||||||||||||
| log(S/He) | |||||||||||||
| log(Cl/He) | |||||||||||||
| log(Sc/He) | |||||||||||||
| log(Ti/He) | |||||||||||||
| log(V/He) | |||||||||||||
| log(Cr/He) | |||||||||||||
| log(Mn/He) | |||||||||||||
| log(Fe/He) | |||||||||||||
| log(Co/He) | |||||||||||||
| log(Ni/He) | |||||||||||||
| log(Cu/He) | |||||||||||||
| log(Zn/He) | |||||||||||||
| log(Ga/He) | |||||||||||||
| log(Ge/He) | |||||||||||||
| log(Sr/He) | |||||||||||||
| Parallax | [mas] | 1.65 (0.1) | 1.82 (0.2) | 1.65 | 1.65 (0.1) | ||||||||
| Distance | [pc] | 605.22 (49) | 549.08 (48) | 605.22 | 605.22 (49) | ||||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.615129861 (0.1) | -1.419400373 (0.3) | -1.615 (0.1) | |||||||||
| Proper motion (declination) | [mas/yr] | -12.19948086 (0.1) | -11.97506649 (0.3) | -12.199 (0.1) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 17.16 (0.008) | 17.16 (0.008) | 17.19 (0.01) | ||||||||||
| g magnitude | 17.59 (0.005) | 17.59 (0.005) | 17.63 (0.02) | ||||||||||
| r magnitude | 18.15 (0.007) | 18.15 (0.007) | 18.16 (0.01) | ||||||||||
| i magnitude | 18.51 (0.01) | 18.51 (0.01) | 18.53 (0.02) | ||||||||||
| z magnitude | 18.85 (0.04) | 18.85 (0.04) | 18.86 (0.04) | ||||||||||
| G magnitude | 17.88 (0.02) | 17.91 | 17.88 | 17.88 (0.003) | |||||||||
| BP magnitude | 17.69 (0.02) | 17.59 | |||||||||||
| RP magnitude | 18.20 (0.03) | 18.14 | |||||||||||
| Pan g magnitude | 17.71 (0.005) | ||||||||||||
| Pan r magnitude | 18.14 (0.004) | ||||||||||||
| Pan i magnitude | 18.54 (0.007) | ||||||||||||
| Pan z magnitude | 18.82 (0.01) | ||||||||||||
| Pan y magnitude | 19.01 (0.02) | ||||||||||||
| E(B-V) | 0.019 | ||||||||||||
* 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.