All names: BPS CS 30329-0053, 2MASS J15403333-0448121, Gaia DR2 4400811306108496000, WISEA J154033.32-044812.4, UCAC4 426-063398, PG1537-046, USNO-B1.0 0851-00273968, TIC 46357457, Gaia DR3 4400811306108496000, GALEX J154033.3-044811, UCAC2 30210497, WISE J154033.31-044812.3, PG 1537-046
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 40 33.34 | 15 40 33.34 (0.04) | ||
| Declination | -04 48 12.35 | -04 48 12.19 (0.03) | ||
| Spectral type | He-sdO | sdOC2VIIeHe40 | ||
| 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] | 0.49 (0.06) | 0.38 (0.04) | |
| Distance | [pc] | 2046.25 (247) | 2621.23 (305) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.195 (0.1) | -4.008 (0.05) | |
| Proper motion (declination) | [mas/yr] | 1.251 (0.08) | 0.979 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.87 (0.01) | |||
| V magnitude | 14.99 (0.03) | |||
| R magnitude | 15.34 (0.05) | |||
| I magnitude | ||||
| J magnitude | 15.53 (0.06) | 15.53 (0.06) | ||
| H magnitude | 15.76 (0.1) | 15.76 (0.1) | ||
| K magnitude | 15.40 (0.2) | 15.40 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.99 (0.001) | 14.97 (0.003) | ||
| BP magnitude | 14.82 (0.01) | |||
| RP magnitude | 15.17 (0.003) | |||
| Pan g magnitude | 14.85 (0.003) | |||
| Pan r magnitude | 15.20 (0.002) | |||
| Pan i magnitude | 15.51 (0.002) | |||
| Pan z magnitude | 15.75 (0.005) | |||
| Pan y magnitude | 15.91 (0.003) | |||
| E(B-V) | 0.128 | |||
* 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.