All names: GALEX J233103.6-251548, Gaia DR3 2380799916630412416, EC 23284-2532, Gaia DR2 2380799916630412416, BPS CS 30315-0040, 2MASS J23310366-2515479, TIC 304391913, GALEXJ23310-2515, UCAC4 324-218562
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 31 03.68 | 23 31 03.65 (0.03) | ||
| Declination | -25 15 48.93 | -25 15 47.97 (0.03) | ||
| Spectral type | sdO | sdB | ||
| 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] | 0.42 (0.06) | 0.27 (0.04) | |
| Distance | [pc] | 2362.39 (311) | 3696.86 (544) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.939 (0.1) | 7.195 (0.04) | |
| Proper motion (declination) | [mas/yr] | -1.444 (0.09) | -1.341 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.22 (0.03) | |||
| V magnitude | 14.41 (0.03) | |||
| R magnitude | 14.69 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.51 (0.04) | 14.51 (0.04) | ||
| H magnitude | 14.38 (0.05) | 14.38 (0.05) | ||
| K magnitude | 14.43 (0.08) | 14.43 (0.08) | ||
| u magnitude | ||||
| g magnitude | 14.19 (0.07) | |||
| r magnitude | 14.49 (0.02) | |||
| i magnitude | 14.80 (0.01) | |||
| z magnitude | ||||
| G magnitude | 14.35 (0.0009) | 14.33 (0.003) | ||
| BP magnitude | 14.20 (0.01) | |||
| RP magnitude | 14.47 (0.002) | |||
| Pan g magnitude | 14.26 (0.004) | |||
| Pan r magnitude | 14.57 (0.005) | |||
| Pan i magnitude | 14.81 (0.005) | |||
| Pan z magnitude | 14.99 (0.01) | |||
| Pan y magnitude | 15.09 (0.006) | |||
| E(B-V) | 0.013 | |||
* 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.