All names: SDSSJ214211.29+045456.3, SDSS J214211.29+045456.3, Gaia EDR3 2698467586312353408, SDSS J214211.29+045456.34, GALEX J214211.2+045456, SDSS J214211.29+045456.2, 2MASS J21421129+0454569, LAMOST J214211.29+045456.3, Gaia DR3 2698467586312353408, Gaia DR2 2698467586312353408
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 42 11.30 (0.06) | 21 42 11.29 | 21 42 11.29 | 21 42 11.30 (0.08) | 21 42 11.29 (0.06) | ||||
| Declination | 04 54 56.42 (0.05) | 04 54 56.29 | 04 54 56.30 | 04 54 56.42 (0.07) | 04 54 56.32 (0.05) | ||||
| Spectral type | sdOB | sdO | sdO | ||||||
| Effective temperature | [K] | 35568.0 (176) | |||||||
| log(g) | [cgs] | 5.77 (0.03) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.63 (0.06) | 0.58 (0.09) | 0.58 (0.09) | 0.63 (0.06) | ||||
| Distance | [pc] | 1587.98 (161) | 1727.41 (263) | 1727.51 (263) | 1588.06 (161) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 5.768003259 (0.07) | 5.597 (0.2) | 5.596964468 (0.2) | 5.768 (0.07) | ||||
| Proper motion (declination) | [mas/yr] | 6.594445451 (0.06) | 6.579 (0.1) | 6.579062741 (0.1) | 6.594 (0.06) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.80 (0.2) | 16.80 (0.2) | |||||||
| H magnitude | 16.34 (0.2) | 16.34 (0.2) | |||||||
| K magnitude | 16.16 | ||||||||
| u magnitude | 16.05 (0.005) | 16.05 (0.005) | 16.06 (0.02) | 16.05 (0.005) | |||||
| g magnitude | 16.22 (0.003) | 16.22 (0.003) | 16.27 (0.02) | 16.22 (0.003) | |||||
| r magnitude | 16.58 (0.004) | 16.58 (0.004) | 16.58 (0.02) | 16.58 (0.004) | |||||
| i magnitude | 16.82 (0.005) | 16.82 (0.005) | 16.83 (0.02) | 16.82 (0.005) | |||||
| z magnitude | 17.01 (0.01) | 17.01 (0.01) | 16.99 (0.03) | 17.01 (0.01) | |||||
| G magnitude | 16.38 (0.003) | 16.41 (0.002) | 16.41 | 16.38 (0.003) | |||||
| BP magnitude | 16.30 (0.003) | 16.26 (0.01) | 16.26 | ||||||
| RP magnitude | 16.52 (0.007) | 16.53 (0.006) | 16.53 | ||||||
| Pan g magnitude | 16.28 (0.004) | 16.28 (0.004) | |||||||
| Pan r magnitude | 16.58 (0.004) | 16.58 (0.004) | |||||||
| Pan i magnitude | 16.86 (0.004) | 16.86 (0.004) | |||||||
| Pan z magnitude | 17.04 (0.008) | 17.04 (0.008) | |||||||
| Pan y magnitude | 17.20 (0.01) | 17.20 (0.01) | |||||||
| E(B-V) | 0.053 | ||||||||
* 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.