All names: USNO-B1.0 1081-00007823, ** SLN 49B, Gaia DR3 2794800060629297152, SDSS J003051.80+181046.0, Gaia DR2 2794800060629297152, WDS J00309+1811B
| Parameter | Unit | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|
| Right ascension | 00 30 51.80 | 00 30 51.81 (0.2) | ||
| Declination | 18 10 45.94 | 18 10 46.17 (0.1) | ||
| Spectral type | DA | DA | ||
| Effective temperature | [K] | 13676.0 (735) | ||
| log(g) | [cgs] | 8.24 (0.07) | ||
| Mass | [M☉] | 0.76 (0.06) | ||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 4.10 | 4.10 (0.2) | |
| Distance | [pc] | 243.81 | 243.81 (13) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -12.399 (0.2) | ||
| Proper motion (declination) | [mas/yr] | -14.103 (0.2) | ||
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 19.20 | |||
| V magnitude | ||||
| R magnitude | 19.10 | |||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 19.07 (0.02) | |||
| g magnitude | 18.73 (0.008) | |||
| r magnitude | 18.95 (0.01) | |||
| i magnitude | 19.20 (0.02) | |||
| z magnitude | 19.38 (0.06) | |||
| G magnitude | 18.85 | 18.85 (0.003) | ||
| BP magnitude | ||||
| RP magnitude | ||||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.025 | |||
* 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.