All names: PG1621+126, SDSS J162344.85+122913.1, SDSS J162344.85+122913.13, Gaia DR3 4460144011560675584, Gaia EDR3 4460144011560675584, TIC 149760909, SDSS J162344.84+122913.1, GALEX J162344.9+122913, PG 1621+126, 2MASS J16234485+1229131, Gaia DR2 4460144011560675584
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 23 44.85 (0.04) | 16 23 44.85 | 16 23 44.86 | 16 23 44.85 (0.04) | 16 23 44.85 (0.04) | ||||
| Declination | 12 29 13.09 (0.03) | 12 29 13.13 | 12 29 13.39 | 12 29 13.09 (0.03) | 12 29 13.12 (0.03) | ||||
| Spectral type | sdB | sdB | sdB | ||||||
| Effective temperature | [K] | 30162.0 (181) | |||||||
| log(g) | [cgs] | 5.47 (0.03) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.58 (0.05) | 0.40 (0.07) | 0.40 (0.07) | 0.58 (0.05) | ||||
| Distance | [pc] | 1733.75 (148) | 2482.62 (411) | 2482.38 (411) | 1733.70 (148) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -0.583632826 (0.05) | -0.528 (0.08) | -0.528483972 (0.08) | -0.584 (0.05) | ||||
| Proper motion (declination) | [mas/yr] | -2.324322748 (0.04) | -2.28 (0.06) | -2.280105625 (0.06) | -2.324 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.95 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.18 (0.09) | 16.18 (0.09) | |||||||
| H magnitude | 15.92 (0.2) | 15.92 (0.2) | |||||||
| K magnitude | 16.27 | ||||||||
| u magnitude | 15.43 (0.005) | 15.43 (0.005) | 15.43 (0.02) | 15.43 (0.005) | |||||
| g magnitude | 15.56 (0.003) | 15.56 (0.003) | 15.60 (0.01) | 15.56 (0.003) | |||||
| r magnitude | 15.99 (0.005) | 15.99 (0.005) | 16.00 (0.01) | 15.99 (0.005) | |||||
| i magnitude | 16.30 (0.005) | 16.30 (0.005) | 16.32 (0.02) | 16.30 (0.005) | |||||
| z magnitude | 16.57 (0.009) | 16.57 (0.009) | 16.57 (0.02) | 16.57 (0.009) | |||||
| G magnitude | 15.78 (0.002) | 15.80 (0.0007) | 15.80 | 15.78 (0.003) | |||||
| BP magnitude | 15.68 (0.002) | 15.63 (0.008) | 15.63 | ||||||
| RP magnitude | 15.98 (0.005) | 15.97 (0.006) | 15.97 | ||||||
| Pan g magnitude | 15.64 (0.002) | 15.64 (0.002) | |||||||
| Pan r magnitude | 16.01 (0.002) | 16.01 (0.002) | |||||||
| Pan i magnitude | 16.30 (0.004) | 16.30 (0.004) | |||||||
| Pan z magnitude | 16.54 (0.005) | 16.54 (0.005) | |||||||
| Pan y magnitude | 16.68 (0.003) | 16.68 (0.003) | |||||||
| E(B-V) | 0.044 | ||||||||
* 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.