All names: SDSS J090031.99+295741.1, Gaia DR2 699558225859044736, Gaia DR3 699558225859044736, Gaia EDR3 699558225859044736, GALEX J090032.0+295740, SDSS J090031.99+295741.0
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 00 32.00 (0.4) | 09 00 31.99 | 09 00 32.00 (0.6) | 09 00 32.00 (0.4) | 09 00 31.99 | 09 00 31.99 | |||||
| Declination | 29 57 41.03 (0.2) | 29 57 41.05 | 29 57 41.04 (0.4) | 29 57 41.07 (0.2) | 29 57 41.05 | 29 57 41.05 | |||||
| Spectral type | DO | DC | SDO: | DC_VERYHOT | DO: | ||||||
| Effective temperature | [K] | 93221.0 (44228) | 96367.0 (6081) | 89680.0 (9415) | |||||||
| log(g) | [cgs] | 8.01 (1) | 5.11 (0.1) | 5.61 (0.5) | |||||||
| Mass | [M☉] | 0.72 (0.5) | |||||||||
| log(Luminosity) | [L☉] | 1.12 (1) | |||||||||
| Cooling age | [Gyr] | 0.0004 (0.0004) | |||||||||
| log(H/He) | |||||||||||
| 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] | 0.69 (0.5) | 0.29 (0.8) | 0.69 (0.5) | |||||||
| Distance | [pc] | 1445.10 (986) | 3492.95 (9209) | 1445.09 (986) | |||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -0.292671586 (0.4) | -0.998522929 (1) | -0.293 (0.4) | -3.8 | ||||||
| Proper motion (declination) | [mas/yr] | -2.375000724 (0.4) | -2.751627881 (0.8) | -2.375 (0.4) | -7.2 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.07 (0.02) | 19.08 (0.03) | 19.10 (0.03) | 19.09 (0.03) | |||||||
| g magnitude | 19.46 (0.01) | 19.46 (0.01) | 19.48 (0.02) | 19.48 (0.02) | |||||||
| r magnitude | 20.07 (0.02) | 20.07 (0.03) | 20.10 (0.03) | 20.10 (0.03) | |||||||
| i magnitude | 20.36 (0.04) | 20.35 (0.04) | 20.38 (0.04) | 20.38 (0.04) | |||||||
| z magnitude | 20.72 (0.2) | 20.75 (0.2) | 20.72 (0.2) | 20.72 (0.2) | |||||||
| G magnitude | 19.78 (0.03) | 19.86 | 19.78 (0.004) | ||||||||
| BP magnitude | 19.67 (0.03) | 19.57 | |||||||||
| RP magnitude | 20.00 (0.07) | 20.04 | |||||||||
| Pan g magnitude | 19.57 (0.01) | ||||||||||
| Pan r magnitude | 20.07 (0.01) | ||||||||||
| Pan i magnitude | 20.42 (0.03) | ||||||||||
| Pan z magnitude | 20.69 (0.06) | ||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.024 | ||||||||||
* 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.