All names: CRTS J230943.3-474529, LB 1520, UCAC4 212-187949, Gaia DR3 6527251469785220352, EC 23068-4801, Gaia EDR3 6527251469785220352, Gaia DR2 6527251469785220352, 2MASS J23094333-4745292, TIC 139266474, EC23068-4801
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 09 43.32 (0.02) | 23 09 43.41 | 23 09 43.34 (0.02) | ||
| Declination | -47 45 29.55 (0.03) | -47 45 28.87 | -47 45 29.45 (0.03) | ||
| Spectral type | sdB | 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] | 0.70 (0.04) | 0.65 (0.06) | 0.70 (0.04) | |
| Distance | [pc] | 1438.64 (85) | 1548.23 (142) | 1438.64 (85) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -11.921 (0.03) | -11.904 (0.06) | -11.921 (0.03) | |
| Proper motion (declination) | [mas/yr] | -5.733 (0.04) | -5.479 (0.08) | -5.733 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.22 (0.06) | ||||
| V magnitude | 15.35 (0.03) | ||||
| R magnitude | 15.67 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.87 (0.07) | 15.87 (0.07) | |||
| H magnitude | 15.91 (0.1) | 15.91 (0.1) | |||
| K magnitude | 17.04 | ||||
| u magnitude | |||||
| g magnitude | 15.18 (0.03) | ||||
| r magnitude | 15.62 (0.03) | ||||
| i magnitude | 15.89 (0.04) | ||||
| z magnitude | |||||
| G magnitude | 15.36 (0.003) | 15.39 (0.002) | 15.36 (0.003) | ||
| BP magnitude | 15.23 (0.005) | 15.19 (0.009) | |||
| RP magnitude | 15.62 (0.01) | 15.63 (0.009) | |||
| 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.