All names: Gaia DR3 1573011744729727104, SDSS J120728.42+540129.1, WISEA J120728.40+540129.3, UCAC4 721-052370, PN G136.6+61.9, Gaia DR2 1573011744729727104, SDSS J120728.43+540129.1, Balloon 113839002, LB 2216, SBSS 1204+543, WISE J120728.37+540129.3, Gaia EDR3 1573011744729727104, PG1204+543, PG 1204+543, GALEX J120728.4+540128
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 07 28.41 (0.03) | 12 07 28.45 | 12 07 28.43 (0.03) | ||
| Declination | 54 01 28.96 (0.04) | 54 01 29.99 | 54 01 29.15 (0.04) | ||
| Spectral type | He-sdO | DAO | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.87 (0.05) | 0.88 (0.08) | 0.87 (0.05) | |
| Distance | [pc] | 1145.21 (71) | 1141.03 (103) | 1145.21 (71) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.854 (0.04) | -9.104 (0.09) | -8.854 (0.04) | |
| Proper motion (declination) | [mas/yr] | -12.111 (0.05) | -12.173 (0.1) | -12.111 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.61 (0.08) | ||||
| V magnitude | 15.98 (0.06) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 15.18 (0.004) | 15.17 (0.05) | |||
| g magnitude | 15.64 (0.003) | 15.71 (0.02) | |||
| r magnitude | 16.23 (0.004) | 16.24 (0.02) | |||
| i magnitude | 16.62 (0.005) | 16.62 (0.02) | |||
| z magnitude | 16.95 (0.01) | 16.96 (0.01) | |||
| G magnitude | 15.93 (0.003) | 15.96 (0.002) | 15.93 (0.003) | ||
| BP magnitude | 15.74 (0.004) | 15.68 (0.009) | |||
| RP magnitude | 16.31 (0.006) | 16.30 (0.007) | |||
| Pan g magnitude | 15.76 (0.004) | ||||
| Pan r magnitude | 16.23 (0.005) | ||||
| Pan i magnitude | 16.65 (0.002) | ||||
| Pan z magnitude | 16.96 (0.004) | ||||
| Pan y magnitude | 17.14 (0.009) | ||||
| E(B-V) | 0.019 | ||||
* 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.