All names: SDSS J012855.44+401048.6, Gaia DR3 324026390239545600, Gaia DR2 324026390239545600, SDSSJ012855.44+401048.6, SDSS J012855.43+401048.6, Gaia EDR3 324026385944034304
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 01 28 54.28 (0.6) | 01 28 55.44 | 01 28 55.44 (0.2) | ||
| Declination | 40 10 17.34 (0.5) | 40 10 48.60 | 40 10 48.66 (0.2) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 33367.0 (869) | |||
| log(g) | [cgs] | 6.02 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 4.23 (0.7) | 0.47 (0.3) | 0.11 (0.2) | |
| Distance | [pc] | 236.32 (37) | 2139.50 (1496) | 8748.91 (15906) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 16.057 (1) | -1.033 (0.8) | -1.997 (0.3) | |
| Proper motion (declination) | [mas/yr] | -9.262 (0.7) | -0.695 (0.5) | -1.301 (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 | 18.04 (0.01) | 17.98 (0.01) | |||
| g magnitude | 18.28 (0.007) | 18.28 (0.007) | |||
| r magnitude | 18.76 (0.01) | 18.76 (0.01) | |||
| i magnitude | 19.09 (0.01) | 19.09 (0.01) | |||
| z magnitude | 19.44 (0.06) | 19.45 (0.06) | |||
| G magnitude | 20.43 (0.008) | 18.57 (0.004) | 18.53 (0.004) | ||
| BP magnitude | 20.59 (0.1) | 18.35 (0.03) | |||
| RP magnitude | 20.04 (0.09) | 18.87 (0.02) | |||
| Pan g magnitude | 18.37 (0.008) | ||||
| Pan r magnitude | 18.77 (0.006) | ||||
| Pan i magnitude | 19.11 (0.006) | ||||
| Pan z magnitude | 19.34 (0.03) | ||||
| Pan y magnitude | 19.57 (0.08) | ||||
| E(B-V) | 0.045 | ||||
* 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.