All names: SDSS J141742.51+074250.6, PG1415+079, Gaia DR2 3673669803841423744, UCAC2 34473559, 2MASS J14174252+0742505, TIC 421735572, GALEX J141742.5+074251, PG 1415+079, UCAC4 489-057446, Gaia DR3 3673669803841423744
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 14 17 42.50 | 14 17 42.51 (0.04) | |
| Declination | 07 42 50.67 | 07 42 50.68 (0.03) | |
| Spectral type | sdO | sdOA | |
| 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] | -0.07 (0.08) | 0.06 (0.05) |
| Distance | [pc] | 17699.12 (14473) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -1.074 (0.1) | -1.109 (0.05) |
| Proper motion (declination) | [mas/yr] | -0.397 (0.1) | -0.465 (0.04) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 15.63 (0.05) | ||
| V magnitude | 15.68 (0.06) | ||
| R magnitude | 15.75 (0.02) | ||
| I magnitude | |||
| J magnitude | 15.78 (0.06) | 15.78 (0.06) | |
| H magnitude | 15.70 (0.1) | 15.70 (0.1) | |
| K magnitude | 15.94 | ||
| u magnitude | 15.74 (0.005) | ||
| g magnitude | 15.45 (0.004) | ||
| r magnitude | 15.77 (0.004) | ||
| i magnitude | 15.98 (0.004) | ||
| z magnitude | 16.17 (0.007) | ||
| G magnitude | 15.68 (0.003) | 15.65 (0.003) | |
| BP magnitude | 15.56 (0.01) | ||
| RP magnitude | 15.72 (0.006) | ||
| Pan g magnitude | 15.55 (0.004) | ||
| Pan r magnitude | 15.80 (0.003) | ||
| Pan i magnitude | 16.07 (0.004) | ||
| Pan z magnitude | 16.23 (0.003) | ||
| Pan y magnitude | 16.31 (0.005) | ||
| E(B-V) | |||
* 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.