All names: Gaia DR3 2728745452186497408, PG 2204+127, PG2204+127, SDSS J220711.11+125755.58, SDSS J220711.11+125755.5, SDSS J220711.11+125755.7, TIC 60680959, Gaia EDR3 2728745452186497408, GALEX J220711.0+125756, 2MASS J22071110+1257559, Gaia DR2 2728745452186497408
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 07 11.10 (0.08) | 22 07 11.11 | 22 07 11.11 | 22 07 11.10 (0.1) | 22 07 11.11 (0.08) | ||||
| Declination | 12 57 55.50 (0.09) | 12 57 55.78 | 12 57 56.76 | 12 57 55.51 (0.1) | 12 57 55.80 (0.09) | ||||
| Spectral type | sdOB | He-sdO | sdOHe | ||||||
| Effective temperature | [K] | 53992.0 (2078) | 75000.0 (25000) | ||||||
| log(g) | [cgs] | 6.11 (0.2) | 6.50 (2) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.49 (0.1) | 0.25 (0.2) | 0.25 (0.2) | 0.49 (0.1) | ||||
| Distance | [pc] | 2036.42 (469) | 4022.53 (2879) | 4022.97 (2879) | 2036.25 (469) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -4.886516065 (0.09) | -4.666 (0.2) | -4.665554802 (0.2) | -4.887 (0.09) | ||||
| Proper motion (declination) | [mas/yr] | -18.68698338 (0.1) | -18.709 (0.2) | -18.70916422 (0.2) | -18.687 (0.1) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.76 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.21 (0.1) | 16.21 (0.1) | |||||||
| H magnitude | 15.64 | ||||||||
| K magnitude | 15.81 | ||||||||
| u magnitude | 15.25 (0.005) | 15.25 (0.005) | 15.26 (0.01) | 15.25 (0.005) | |||||
| g magnitude | 15.61 (0.004) | 15.61 (0.004) | 15.63 (0.01) | 15.61 (0.004) | |||||
| r magnitude | 16.05 (0.004) | 16.05 (0.004) | 16.05 (0.01) | 16.05 (0.004) | |||||
| i magnitude | 16.32 (0.005) | 16.32 (0.005) | 16.35 (0.01) | 16.32 (0.005) | |||||
| z magnitude | 16.57 (0.01) | 16.57 (0.01) | 16.58 (0.02) | 16.57 (0.01) | |||||
| G magnitude | 15.87 (0.004) | 15.86 (0.003) | 15.86 | 15.87 (0.004) | |||||
| BP magnitude | 15.71 (0.004) | 15.67 (0.01) | 15.67 | ||||||
| RP magnitude | 16.04 (0.008) | 16.05 (0.006) | 16.05 | ||||||
| Pan g magnitude | 15.71 (0.005) | 15.71 (0.005) | |||||||
| Pan r magnitude | 16.07 (0.006) | 16.07 (0.006) | |||||||
| Pan i magnitude | 16.37 (0.003) | 16.37 (0.003) | |||||||
| Pan z magnitude | 16.59 (0.006) | 16.59 (0.006) | |||||||
| Pan y magnitude | 16.75 (0.008) | 16.75 (0.008) | |||||||
| E(B-V) | 0.047 | ||||||||
* 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.