All names: GALEX J030754.2+152515, WISE J030754.30+152514.2, 2MASS J03075430+1525144, Gaia DR2 31265029748469120, TIC 381360733, UCAC2 37120279, US 3681, UCAC4 528-005546, PG0305+152, Gaia DR3 31265029748469120, WISEA J030754.31+152514.2, BPS CS 31071-0097, PG 0305+152, LAMOST J030754.31+152514.3
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 03 07 54.31 | 03 07 54.31 (0.03) | ||
| Declination | 15 25 14.64 | 15 25 14.42 (0.03) | ||
| Spectral type | sd | sdB/sdO | ||
| 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] | 1.12 (0.06) | 1.11 (0.04) | |
| Distance | [pc] | 892.78 (46) | 899.93 (29) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.102 (0.1) | 1.347 (0.04) | |
| Proper motion (declination) | [mas/yr] | 1.764 (0.09) | 1.925 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.28 (0.04) | |||
| V magnitude | 14.49 (0.2) | |||
| R magnitude | 14.81 (0.08) | |||
| I magnitude | ||||
| J magnitude | 14.86 (0.04) | 14.86 (0.04) | ||
| H magnitude | 14.82 (0.07) | 14.82 (0.07) | ||
| K magnitude | 14.95 (0.1) | 14.95 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.24 (0.04) | |||
| r magnitude | 14.64 (0.07) | |||
| i magnitude | 14.72 (0.3) | |||
| z magnitude | ||||
| G magnitude | 14.38 (0.0007) | 14.37 (0.003) | ||
| BP magnitude | 14.24 (0.01) | |||
| RP magnitude | 14.53 (0.002) | |||
| Pan g magnitude | 14.27 (0.003) | |||
| Pan r magnitude | 14.57 (0.0004) | |||
| Pan i magnitude | 14.87 (0.002) | |||
| Pan z magnitude | 15.09 (0.004) | |||
| Pan y magnitude | 15.24 (0.005) | |||
| E(B-V) | 0.160 | |||
* 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.