All names: Gaia DR2 3955675294912632832, Gaia DR3 3955675294912632832, 2MASS J12364004+2209177, SDSS J123640.07+220917.6, [BGK2006] J123640.08+220917.7, Ton 89, SDSSJ123640.07+220917.6, TIC 159184316, PG 1234+224
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 36 40.08 | 12 36 40.08 (0.04) | ||
| Declination | 22 09 17.60 | 22 09 17.66 (0.03) | ||
| Spectral type | sdB+MS | B | ||
| 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] | 0.32 (0.08) | 0.21 (0.06) | |
| Distance | [pc] | 3095.98 (731) | 4786.98 (1329) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.889 (0.1) | -5.972 (0.06) | |
| Proper motion (declination) | [mas/yr] | -5.062 (0.07) | -4.977 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.20 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.30 (0.1) | 16.30 (0.1) | ||
| H magnitude | 16.22 (0.2) | 16.22 (0.2) | ||
| K magnitude | 16.06 | |||
| u magnitude | 16.48 (0.006) | 16.48 (0.006) | ||
| g magnitude | 15.96 (0.003) | 15.96 (0.003) | ||
| r magnitude | 16.29 (0.004) | 16.29 (0.004) | ||
| i magnitude | 16.55 (0.004) | 16.55 (0.004) | ||
| z magnitude | 16.75 (0.009) | 16.75 (0.009) | ||
| G magnitude | 16.17 (0.0008) | 16.15 (0.003) | ||
| BP magnitude | 16.09 (0.003) | |||
| RP magnitude | 16.24 (0.003) | |||
| Pan g magnitude | 16.04 (0.003) | |||
| Pan r magnitude | 16.32 (0.004) | |||
| Pan i magnitude | 16.58 (0.002) | |||
| Pan z magnitude | 16.78 (0.004) | |||
| Pan y magnitude | 16.84 (0.006) | |||
| 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.