All names: AG+81 266, Gaia DR2 1144974578159253632, 2MASS J09211915+8143274, HIC 45880, TIC 415706327, HIP 45880, PPM 1565, CSI+81-09137, GALEX J092120.8+814327, Gaia DR3 1144974578159253632, FBS B 1060, Gaia EDR3 1144974578159253632, TYC 4547-1009-1, FBS0913+819, FBS 0913+819
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 09 21 19.09 (0.04) | 09 21 19.92 | 09 21 19.18 (0.04) | ||
| Declination | 81 43 26.81 (0.04) | 81 43 28.59 | 81 43 27.63 (0.04) | ||
| Spectral type | sdO | 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] | 3.40 (0.04) | 3.47 (0.04) | 3.40 (0.04) | |
| Distance | [pc] | 294.33 (4) | 287.90 (4) | 294.33 (4) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -11.248 (0.06) | -11.258 (0.08) | -11.248 (0.06) | |
| Proper motion (declination) | [mas/yr] | -51.279 (0.05) | -51.26 (0.09) | -51.279 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 11.59 (0.06) | ||||
| V magnitude | 11.95 (0.1) | ||||
| R magnitude | 12.09 | ||||
| I magnitude | 12.28 | ||||
| J magnitude | 12.69 (0.02) | 12.69 (0.02) | |||
| H magnitude | 12.84 (0.03) | 12.84 (0.03) | |||
| K magnitude | 12.98 (0.04) | 12.98 (0.04) | |||
| u magnitude | 12.88 (0.003) | ||||
| g magnitude | 11.81 (0.001) | ||||
| r magnitude | 12.38 (0.001) | ||||
| i magnitude | 12.82 (0.003) | ||||
| z magnitude | 13.40 (0.004) | ||||
| G magnitude | 11.86 (0.003) | 11.88 (0.0005) | 11.86 (0.003) | ||
| BP magnitude | 11.69 (0.003) | 11.64 (0.01) | |||
| RP magnitude | 12.22 (0.004) | 12.23 (0.003) | |||
| Pan g magnitude | 11.72 | ||||
| Pan r magnitude | 12.24 | ||||
| Pan i magnitude | 12.61 | ||||
| Pan z magnitude | 12.94 | ||||
| Pan y magnitude | 13.07 (0.006) | ||||
| E(B-V) | 0.018 | ||||
* 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.