All names: SDSS J220714.41+072232.18, SDSSJ220714.41+072232.1, PG 2204+071, SDSS J220714.41+072232.1, 2MASS J22071441+0722323, BPS BS 17569-0063, TIC 468259539, GALEX J220714.4+072232, UCAC2 34383676, 1SWASP J220714.40+072232.3, Gaia DR3 2721869312624463872, WD 2204+071, SDSS J220714.41+072232.0, UCAC4 487-135054, Gaia DR2 2721869312624463872, Gaia EDR3 2721869312624463872
| Parameter | Unit | Gaia EDR3 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 07 14.42 (0.04) | 22 07 14.42 | 22 07 14.41 | 22 07 14.42 (0.08) | 22 07 14.41 (0.04) | 22 07 13.73 | |||
| Declination | 07 22 32.07 (0.03) | 07 22 32.09 | 07 22 32.10 | 07 22 32.07 (0.07) | 07 22 32.15 (0.03) | 07 22 16.68 | |||
| Spectral type | He-sdOB | sdOB_known | sdB | sd | |||||
| Effective temperature | [K] | 40527.0 (2000) | 31576.0 (1000) | ||||||
| log(g) | [cgs] | 5.58 (0.2) | 6.50 (0.05) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.72 (0.04) | 0.56 (0.09) | 0.56 (0.09) | 0.72 (0.04) | ||||
| Distance | [pc] | 1384.20 (77) | 1776.51 (271) | 1776.38 (271) | 1384.27 (77) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 1.722154221 (0.04) | 1.856 (0.1) | 1.855971244 (0.1) | 1.722 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -5.339981725 (0.04) | -4.987 (0.1) | -4.986610123 (0.1) | -5.34 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.51 (0.01) | ||||||||
| V magnitude | 14.73 (0.01) | ||||||||
| R magnitude | 15.15 (0.1) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.30 (0.05) | 15.30 (0.05) | |||||||
| H magnitude | 15.25 (0.09) | 15.25 (0.09) | |||||||
| K magnitude | 14.90 | ||||||||
| u magnitude | 14.18 (0.004) | 14.18 (0.004) | 14.18 (0) | 14.18 (0.004) | |||||
| g magnitude | 14.48 (0.004) | 14.48 (0.004) | 14.48 (0) | 14.48 (0.004) | |||||
| r magnitude | 14.90 (0.004) | 14.90 (0.004) | 14.90 (0) | 14.90 (0.004) | |||||
| i magnitude | 15.22 (0.005) | 15.22 (0.005) | 15.22 (0) | 15.22 (0.005) | |||||
| z magnitude | 15.51 (0.006) | 15.51 (0.006) | 15.51 (0.01) | 15.51 (0.006) | |||||
| G magnitude | 14.70 (0.002) | 14.72 (0.001) | 14.72 | 14.70 (0.003) | |||||
| BP magnitude | 14.58 (0.002) | 14.53 (0.01) | 14.53 | ||||||
| RP magnitude | 14.92 (0.002) | 14.91 (0.005) | 14.91 | ||||||
| Pan g magnitude | 14.56 (0.006) | ||||||||
| Pan r magnitude | 14.93 (0.002) | ||||||||
| Pan i magnitude | 15.25 (0.002) | ||||||||
| Pan z magnitude | 15.51 (0.003) | ||||||||
| Pan y magnitude | 15.68 (0.002) | ||||||||
| E(B-V) | 0.057 | ||||||||
* 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.