All names: WISEA J013808.70+243013.3, HIDDEN NAME PG 0135+242, PG0135+242, UCAC2 40458645, SDSS J013808.71+243013.2, Gaia DR3 291781459407618432, 2MASS J01380870+2430134, SDSS J013808.71+243013.32, SDSS J013808.71+243013.3, Gaia DR2 291781459407618432, Gaia EDR3 291781459407618432, PG 0135+243, GALEX J013808.6+243013, UCAC4 573-003468, WISE J013808.70+243013.4, TIC 353806457
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 38 08.72 (0.03) | 01 38 08.72 | 01 38 08.70 | 01 38 08.72 (0.05) | 01 38 08.71 (0.03) | ||||
| Declination | 24 30 13.25 (0.03) | 24 30 13.33 | 24 30 13.51 | 24 30 13.26 (0.04) | 24 30 13.32 (0.03) | ||||
| Spectral type | He-sdO | He-sdB | sdBC1VHe35 | ||||||
| Effective temperature | [K] | 37178.0 (1000) | |||||||
| log(g) | [cgs] | 6.50 (0.5) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.20 (0.04) | 0.07 (0.05) | 0.07 (0.05) | 0.20 (0.04) | ||||
| Distance | [pc] | 4975.10 (932) | 14727.54 (11301) | 14732.52 (11313) | 4975.12 (931) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 5.291101356 (0.04) | 5.656 (0.09) | 5.655743628 (0.08) | 5.291 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -3.911131858 (0.03) | -4.097 (0.09) | -4.096919476 (0.08) | -3.911 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.24 (0.02) | ||||||||
| V magnitude | 15.15 (0.05) | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.69 (0.04) | 14.69 (0.04) | |||||||
| H magnitude | 14.46 (0.06) | 14.46 (0.06) | |||||||
| K magnitude | 14.30 (0.08) | 14.30 (0.08) | |||||||
| u magnitude | 15.04 (0.005) | 15.04 (0.005) | 15.04 (0) | 15.04 (0.005) | |||||
| g magnitude | 15.05 (0.004) | 15.05 (0.004) | 15.05 (0) | 15.05 (0.004) | |||||
| r magnitude | 15.17 (0.009) | 15.17 (0.009) | 15.17 (0.01) | 15.17 (0.009) | |||||
| i magnitude | 15.22 (0.004) | 15.22 (0.004) | 15.22 (0) | 15.22 (0.004) | |||||
| z magnitude | 15.29 (0.006) | 15.29 (0.006) | 15.29 (0.01) | 15.29 (0.006) | |||||
| G magnitude | 15.05 (0.002) | 15.07 (0.0009) | 15.07 | 15.05 (0.003) | |||||
| BP magnitude | 15.09 (0.002) | 15.06 (0.006) | 15.06 | ||||||
| RP magnitude | 14.93 (0.002) | 14.93 (0.004) | 14.93 | ||||||
| Pan g magnitude | 15.11 (0.004) | 15.11 (0.004) | |||||||
| Pan r magnitude | 15.18 (0.002) | 15.18 (0.002) | |||||||
| Pan i magnitude | 15.28 (0.003) | 15.28 (0.003) | |||||||
| Pan z magnitude | 15.34 (0.005) | 15.34 (0.005) | |||||||
| Pan y magnitude | 15.35 (0.003) | 15.35 (0.003) | |||||||
| E(B-V) | 0.060 | ||||||||
* 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.