All names: UCAC2 41644085, UCAC3 236-294149, Bal90100002, Gaia DR1 1884813859177653888, TYC 2243-199-1, TIC 436774055, Gaia DR3 1884813859177653888, Balloon 90100002, Gaia DR2 1884813859177653888, GSC 02243-00199, 2MASS J23041214+2755378
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 04 12.00 | 23 04 12.15 (0.02) | ||
| Declination | 27 55 36.99 | 27 55 37.77 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 33600.0 (5000) | ||
| log(g) | [cgs] | 5.71 (0.5) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.03 (0.05) | 0.03 (0.05) | |
| Distance | [pc] | 38610.04 (74984) | 38610.04 (74984) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.336 (0.07) | -1.331 (0.02) | |
| Proper motion (declination) | [mas/yr] | -1.709 (0.07) | -1.873 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.82 (0.3) | |||
| V magnitude | 12.42 (0.2) | |||
| R magnitude | 12.91 (0.08) | |||
| I magnitude | ||||
| J magnitude | 12.62 (0.02) | 12.62 (0.02) | ||
| H magnitude | 12.69 (0.03) | 12.69 (0.03) | ||
| K magnitude | 12.69 (0.02) | 12.69 (0.02) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 12.45 (0.0003) | 12.43 (0.003) | ||
| BP magnitude | 12.37 (0.003) | |||
| RP magnitude | 12.50 (0.001) | |||
| Pan g magnitude | 18.26 (0.4) | |||
| Pan r magnitude | 18.64 (0.02) | |||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.056 | |||
* 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.