All names: SDSS J095731.02+282232.42, GALEX J095730.9+282232, Gaia DR2 743306350418730112, Gaia DR3 743306350418730112, J0957+2822, SDSS J095731.02+282232.4, Gaia EDR3 743306350418730112
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Coutu et al. 2019 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 57 31.02 (0.4) | 09 57 31.02 | 09 57 31.02 | 09 57 31.02 (0.6) | 09 57 31.02 (0.4) | |||||
| Declination | 28 22 32.04 (0.3) | 28 22 32.41 | 28 22 32.57 | 28 22 32.05 (0.5) | 28 22 32.57 (0.3) | |||||
| Spectral type | DZ | DZ: | DC | DZ: | ||||||
| Effective temperature | [K] | 6494.0 (218) | 7204.0 (99) | |||||||
| log(g) | [cgs] | 7.62 | 8.00 (0) | |||||||
| Mass | [M☉] | 0.3748 | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 1.1800 | ||||||||
| log(H/He) | <-3.7466 | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | -11.4422 (0.3) | -10.39 | ||||||||
| 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] | 5.52 (0.6) | 4.16 | 4.16 (0.8) | 5.52 (0.6) | |||||
| Distance | [pc] | 181.28 (19) | 240.44 (45) | 240.44 (45) | 181.28 (19) | |||||
| Composition | He | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | 4.139207792 (0.6) | 4.525439547 (1) | 4.139 (0.6) | ||||||
| Proper motion (declination) | [mas/yr] | -33.25224732 (0.4) | -33.23478246 (0.9) | -33.252 (0.4) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 20.87 (0.07) | 20.89 (0.06) | 20.87 (0.07) | |||||||
| g magnitude | 20.39 (0.02) | 20.44 (0.03) | 20.39 (0.02) | |||||||
| r magnitude | 20.12 (0.02) | 20.16 (0.03) | 20.12 (0.02) | |||||||
| i magnitude | 20.13 (0.03) | 20.16 (0.04) | 20.13 (0.03) | |||||||
| z magnitude | 20.06 (0.1) | 20.08 (0.1) | 20.06 (0.1) | |||||||
| G magnitude | 20.18 (0.05) | 20.25 | 20.18 (0.005) | |||||||
| BP magnitude | 20.43 (0.05) | 20.34 | ||||||||
| RP magnitude | 19.78 (0.07) | 19.95 | ||||||||
| Pan g magnitude | 20.34 (0.02) | |||||||||
| Pan r magnitude | 20.18 (0.03) | |||||||||
| Pan i magnitude | 20.15 (0.01) | |||||||||
| Pan z magnitude | 20.15 (0.02) | |||||||||
| Pan y magnitude | 20.22 (0.1) | |||||||||
| E(B-V) | 0.011 | |||||||||
* 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.