All names: UCAC2 37460565, TIC 306014588, Gaia DR3 1783691847786812288, Gaia DR2 1783691847786812288, UCAC4 530-143887, 1SWASP J212454.89+155903.8, LAMOST J212454.90+155903.6, HIDDEN NAME PG 2122+157, PG2122+157, LAMOST J212454.89+155903.7, PG 2122+158, GALEX J212454.8+155904, 2MASS J21245489+1559037, Gaia EDR3 1783691847786812288, WD 2122+157
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Geier 2020 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 24 54.88 (0.03) | 21 24 54.88 | 21 24 54.88 (0.03) | 21 24 54.89 (0.03) | 21 24 54.79 | |||
| Declination | 15 59 03.62 (0.03) | 15 59 03.59 | 15 59 03.62 (0.04) | 15 59 03.64 (0.03) | 15 59 04.20 | |||
| Spectral type | sdB+MS | sdB+F5V | DA | |||||
| Effective temperature | [K] | 26015.0 (0) | ||||||
| log(g) | [cgs] | 5.22 (0) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.82 (0.04) | 0.80 (0.04) | 0.80 (0.04) | 0.82 (0.04) | |||
| Distance | [pc] | 1215.36 (52) | 1251.09 (63) | 1251.09 (63) | 1215.36 (52) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -8.9016992 (0.03) | -9.475 (0.07) | -9.475 (0.07) | -8.902 (0.03) | |||
| Proper motion (declination) | [mas/yr] | -1.35443472 (0.03) | -0.747 (0.07) | -0.747 (0.07) | -1.354 (0.03) | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 14.60 (0.01) | |||||||
| V magnitude | 14.48 (0.1) | |||||||
| R magnitude | 14.71 (0.1) | |||||||
| I magnitude | ||||||||
| J magnitude | 13.95 (0.03) | 13.95 (0.03) | ||||||
| H magnitude | 13.77 (0.03) | 13.77 (0.03) | ||||||
| K magnitude | 13.64 (0.06) | 13.64 (0.06) | ||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | 14.63 (0.2) | |||||||
| i magnitude | 14.63 (0.05) | |||||||
| z magnitude | ||||||||
| G magnitude | 14.40 (0.001) | 14.42 (0.0009) | 14.42 | 14.40 (0.003) | ||||
| BP magnitude | 14.46 (0.001) | 14.43 (0.004) | 14.43 | |||||
| RP magnitude | 14.26 (0.001) | 14.26 (0.003) | 14.26 | |||||
| Pan g magnitude | 14.46 (0.005) | 14.46 (0.005) | ||||||
| Pan r magnitude | 14.52 (0.001) | 14.52 (0.001) | ||||||
| Pan i magnitude | 14.62 (0.009) | 14.62 (0.009) | ||||||
| Pan z magnitude | 14.69 (0.002) | 14.69 (0.002) | ||||||
| Pan y magnitude | 14.72 (0.005) | 14.72 (0.005) | ||||||
| E(B-V) | 0.076 | |||||||
* 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.