All names: Gaia DR3 6539302529543326592, Gaia DR2 6539302529543326592, TIC 139208432, WISEA J230449.25-473517.8, 2MASS J23044921-4735179, EC23019-4751, WISE J230449.23-473517.6, Gaia EDR3 6539302529543326592, UCAC4 213-203398, EC 23019-4751
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 04 49.27 (0.02) | 23 04 49.24 | 23 04 49.24 (0.02) | ||
| Declination | -47 35 17.97 (0.03) | -47 35 16.91 | -47 35 17.88 (0.03) | ||
| Spectral type | sdOB | sdOB | |||
| 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] | 1.09 (0.04) | 1.23 (0.08) | 1.09 (0.04) | |
| Distance | [pc] | 917.18 (32) | 814.66 (51) | 917.18 (32) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 16.119 (0.02) | 15.943 (0.06) | 16.119 (0.02) | |
| Proper motion (declination) | [mas/yr] | -5.808 (0.04) | -5.779 (0.1) | -5.808 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.23 (0.01) | ||||
| V magnitude | 14.47 (0.01) | ||||
| R magnitude | 15.10 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.12 (0.05) | 15.12 (0.05) | |||
| H magnitude | 15.07 (0.08) | 15.07 (0.08) | |||
| K magnitude | 14.97 (0.1) | 14.97 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.30 (0.02) | ||||
| r magnitude | 14.77 (0.02) | ||||
| i magnitude | 15.08 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 14.45 (0.003) | 14.47 (0.0006) | 14.45 (0.003) | ||
| BP magnitude | 14.29 (0.003) | 14.23 (0.009) | |||
| RP magnitude | 14.77 (0.004) | 14.76 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.010 | ||||
* 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.