All names: SDSS J090655.64+595654.4, GALEX J090655.7+595654, SDSS J090655.64+595654.15, Gaia DR3 1039309620944640256, Gaia EDR3 1039309620944640256, J0906+5956, Gaia DR2 1039309620944640256, SDSS J090655.64+595654.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 06 55.63 (0.2) | 09 06 55.65 | 09 06 55.65 | 09 06 55.63 (0.2) | 09 06 55.63 | 09 06 55.65 (0.2) | |||||
| Declination | 59 56 54.09 (0.2) | 59 56 54.45 | 59 56 54.57 | 59 56 54.11 (0.2) | 59 56 54.09 | 59 56 54.58 (0.2) | |||||
| Spectral type | DZ | DZ | DZ: | DZ | DZ | ||||||
| Effective temperature | [K] | 9953.0 (277) | 8134.0 (79) | 8929.0 (401) | |||||||
| log(g) | [cgs] | 8.31 | 8.00 (0) | 7.95 (0.09) | |||||||
| Mass | [M☉] | 0.7747 | 0.547 (0.07) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.9830 | |||||||||
| log(H/He) | <-5.7096 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | -7.7687 (0.2) | -8.736 | |||||||||
| 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] | 4.70 (0.2) | 4.67 | 4.67 (0.3) | 4.70 | 4.70 (0.2) | |||||
| Distance | [pc] | 212.57 (11) | 214.28 (15) | 214.28 (15) | 212.57 | 212.57 (11) | |||||
| Composition | He | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -12.4172904 (0.2) | -12.39588648 (0.4) | -12.417 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | -30.40565552 (0.2) | -30.21287001 (0.5) | -30.406 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.44 (0.03) | 19.45 (0.03) | 19.45 (0.03) | ||||||||
| g magnitude | 19.24 (0.01) | 19.25 (0.02) | 19.24 (0.01) | ||||||||
| r magnitude | 19.31 (0.02) | 19.33 (0.02) | 19.31 (0.02) | ||||||||
| i magnitude | 19.49 (0.02) | 19.53 (0.03) | 19.49 (0.02) | ||||||||
| z magnitude | 19.75 (0.1) | 19.76 (0.1) | 19.75 (0.1) | ||||||||
| G magnitude | 19.26 (0.02) | 19.29 | 19.26 | 19.26 (0.004) | |||||||
| BP magnitude | 19.35 (0.02) | 19.33 | |||||||||
| RP magnitude | 19.19 (0.04) | 19.15 | |||||||||
| Pan g magnitude | 19.27 (0.01) | ||||||||||
| Pan r magnitude | 19.34 (0.02) | ||||||||||
| Pan i magnitude | 19.48 (0.007) | ||||||||||
| Pan z magnitude | 19.68 (0.01) | ||||||||||
| Pan y magnitude | 19.50 (0.05) | ||||||||||
| E(B-V) | 0.014 | ||||||||||
* 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.