All names: 2MASS J15512845-0118266, TIC 188294055, UCAC4 444-060971, ULAS J155128.45-011826.6, WISE J155128.42-011826.8, LAMOST J155128.45-011826.6, Gaia DR2 4409393647200892416, SDSS J155128.45-011826.8, SDSSJ155128.45-011826.8, Gaia DR3 4409393647200892416, WISEA J155128.41-011826.8
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 51 28.45 | 15 51 28.45 (0.02) | ||
| Declination | -01 18 26.67 | -01 18 26.70 (0.02) | ||
| 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] | 0.51 (0.03) | 0.59 (0.03) | |
| Distance | [pc] | 1972.00 (134) | 1691.76 (72) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -23.3 (0.07) | -23.187 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.958 (0.05) | -8.925 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.56 (0.02) | |||
| V magnitude | ||||
| R magnitude | 14.93 (0.2) | |||
| I magnitude | ||||
| J magnitude | 14.48 (0.04) | 14.48 (0.04) | ||
| H magnitude | 14.56 (0.05) | 14.56 (0.05) | ||
| K magnitude | 14.60 (0.1) | 14.60 (0.1) | ||
| u magnitude | 14.78 (0.004) | 14.78 (0.004) | ||
| g magnitude | 14.43 (0.004) | 14.46 (0.03) | ||
| r magnitude | 14.63 (0.004) | 14.68 (0.01) | ||
| i magnitude | 14.81 (0.004) | 14.82 (0.04) | ||
| z magnitude | 14.98 (0.005) | 14.98 (0.005) | ||
| G magnitude | 14.53 (0.0004) | 14.51 (0.003) | ||
| BP magnitude | 14.48 (0.004) | |||
| RP magnitude | 14.49 (0.002) | |||
| Pan g magnitude | 14.46 (0.003) | |||
| Pan r magnitude | 14.65 (0.003) | |||
| Pan i magnitude | 14.84 (0.002) | |||
| Pan z magnitude | 15.00 (0.002) | |||
| Pan y magnitude | 15.08 (0.003) | |||
| E(B-V) | 0.115 | |||
* 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.