All names: WISE J030754.30+152514.2, UCAC2 37120279, WISEA J030754.31+152514.2, TIC 381360733, US 3681, LAMOST J030754.31+152514.3, UCAC4 528-005546, GALEX J030754.2+152515, Gaia DR2 31265029748469120, BPS CS 31071-0097, PG0305+152, PG 0305+152, 2MASS J03075430+1525144, Gaia DR3 31265029748469120
| 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.