All names: Gaia DR2 4467283273702508800, Gaia DR3 4467283273702508800, GALEX J163310.0+184011, SDSS J163310.02+184011.78, J1633+1840, Gaia EDR3 4467283273702508800, SDSS J163310.03+184011.5, SDSS J163310.02+184011.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Coutu et al. 2019 | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 33 10.00 (0.09) | 16 33 10.04 | 16 33 10.04 | 16 33 10.00 (0.1) | 16 33 10.00 | 16 33 10.04 (0.09) | |||||
| Declination | 18 40 11.80 (0.08) | 18 40 11.58 | 18 40 11.49 | 18 40 11.79 (0.1) | 18 40 11.80 | 18 40 11.49 (0.08) | |||||
| Spectral type | DZ | DZ | DC | DZ | DZ | ||||||
| Effective temperature | [K] | 10298.0 (325) | 10776.0 (37) | 10299.0 (349) | |||||||
| log(g) | [cgs] | 8.03 | 8.00 (0) | 7.97 (0.06) | |||||||
| Mass | [M☉] | 0.5997 | 0.566 (0.05) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.6040 | |||||||||
| log(H/He) | <-5.9456 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | -8.8083 (0.06) | -8.795 (0.03) | |||||||||
| 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] | 6.03 (0.1) | 6.05 | 6.05 (0.2) | 6.03 | 6.03 (0.1) | |||||
| Distance | [pc] | 165.84 (4) | 165.24 (4) | 165.24 (4) | 165.84 | 165.84 (4) | |||||
| Composition | He | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -36.75386373 (0.1) | -36.72174663 (0.2) | -36.754 (0.1) | |||||||
| Proper motion (declination) | [mas/yr] | 19.45382029 (0.1) | 19.46606477 (0.2) | 19.454 (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 | 18.40 (0.01) | 18.40 (0.02) | 18.40 (0.01) | ||||||||
| g magnitude | 18.26 (0.007) | 18.28 (0.01) | 18.26 (0.007) | ||||||||
| r magnitude | 18.37 (0.008) | 18.37 (0.02) | 18.37 (0.008) | ||||||||
| i magnitude | 18.54 (0.01) | 18.55 (0.02) | 18.54 (0.01) | ||||||||
| z magnitude | 18.73 (0.03) | 18.73 (0.03) | 18.73 (0.03) | ||||||||
| G magnitude | 18.29 (0.02) | 18.33 | 18.29 | 18.29 (0.003) | |||||||
| BP magnitude | 18.33 (0.02) | 18.32 | |||||||||
| RP magnitude | 18.26 (0.02) | 18.25 | |||||||||
| Pan g magnitude | 18.28 (0.009) | ||||||||||
| Pan r magnitude | 18.38 (0.005) | ||||||||||
| Pan i magnitude | 18.55 (0.004) | ||||||||||
| Pan z magnitude | 18.74 (0.01) | ||||||||||
| Pan y magnitude | 18.82 (0.03) | ||||||||||
| E(B-V) | 0.036 | ||||||||||
* 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.