All names: Gaia DR2 4466934217416237312, PG1623+178, SDSS J162515.12+174240.2, Gaia EDR3 4466934217416237312, TIC 149785914, Gaia DR3 4466934217416237312, PG 1623+178, SDSS J162515.12+174240.13, SDSS J162515.12+174240.1, 2MASS J16251511+1742401
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 25 15.12 (0.03) | 16 25 15.13 | 16 25 15.13 | 16 25 15.12 (0.04) | 16 25 15.13 (0.03) | ||||
| Declination | 17 42 40.01 (0.03) | 17 42 40.23 | 17 42 40.87 | 17 42 40.02 (0.04) | 17 42 40.23 (0.03) | ||||
| Spectral type | sdB | A/DAZ | sdB | ||||||
| Effective temperature | [K] | 31996.0 (800) | |||||||
| log(g) | [cgs] | 5.60 (0.02) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.45 (0.05) | 0.60 (0.07) | 0.60 (0.07) | 0.45 (0.05) | ||||
| Distance | [pc] | 2201.61 (248) | 1671.96 (189) | 1671.92 (189) | 2201.67 (248) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -3.915746 (0.04) | -4.596 (0.09) | -4.595995196 (0.08) | -3.916 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -13.47775628 (0.04) | -14.016 (0.08) | -14.01608007 (0.08) | -13.478 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.01 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.83 (0.07) | 15.83 (0.07) | |||||||
| H magnitude | 15.72 (0.1) | 15.72 (0.1) | |||||||
| K magnitude | 15.31 (0.1) | 15.31 (0.1) | |||||||
| u magnitude | 15.64 (0.005) | 15.64 (0.005) | 15.64 (0) | 15.64 (0.005) | |||||
| g magnitude | 15.78 (0.003) | 15.78 (0.003) | 15.78 (0) | 15.78 (0.003) | |||||
| r magnitude | 16.16 (0.004) | 16.16 (0.004) | 16.16 (0) | 16.16 (0.004) | |||||
| i magnitude | 16.36 (0.005) | 16.36 (0.005) | 16.36 (0) | 16.36 (0.005) | |||||
| z magnitude | 16.51 (0.008) | 16.51 (0.008) | 16.51 (0.01) | 16.51 (0.008) | |||||
| G magnitude | 15.95 (0.003) | 15.97 (0.001) | 15.97 | 15.95 (0.003) | |||||
| BP magnitude | 15.88 (0.003) | 15.82 (0.009) | 15.82 | ||||||
| RP magnitude | 16.03 (0.003) | 16.02 (0.003) | 16.02 | ||||||
| Pan g magnitude | 15.88 (0.005) | 15.88 (0.005) | |||||||
| Pan r magnitude | 16.16 (0.002) | 16.16 (0.002) | |||||||
| Pan i magnitude | 16.36 (0.003) | 16.36 (0.003) | |||||||
| Pan z magnitude | 16.49 (0.005) | 16.49 (0.005) | |||||||
| Pan y magnitude | 16.55 (0.01) | 16.55 (0.01) | |||||||
| E(B-V) | 0.051 | ||||||||
* 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.