All names: LAMOST J093015.51+305034.6, Gaia DR2 697406932576439680, Gaia DR3 697406932576439680, Ton 427, Gaia EDR3 697406932576439680, CBS 11, SDSS J093015.44+305034.4, TIC 8853675, 2MASS J09301546+3050346, GALEX J093015.4+305034, PG0927+311, PG 0927+311, LAMOST J093015.46+305034.4, UCAC4 605-046075, UCAC2 42581133
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 09 30 15.44 (0.04) | 09 30 15.48 | 09 30 15.45 (0.04) | ||
| Declination | 30 50 34.34 (0.03) | 30 50 34.55 | 30 50 34.40 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 28140.0 (490) | |||
| log(g) | [cgs] | 5.81 (0.07) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.91 (0.05) | 1.01 (0.08) | 0.91 (0.05) | |
| Distance | [pc] | 1103.27 (57) | 989.81 (83) | 1103.27 (57) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.638 (0.05) | -8.685 (0.1) | -8.638 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.441 (0.03) | -3.545 (0.08) | -3.441 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.70 (0.05) | ||||
| V magnitude | 14.96 (0.07) | ||||
| R magnitude | 15.22 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.43 (0.05) | 15.45 (0.004) | |||
| H magnitude | 15.58 (0.1) | 15.50 (0.01) | |||
| K magnitude | 15.74 | 15.61 (0.02) | |||
| u magnitude | 14.48 (0.003) | 14.43 (0.02) | |||
| g magnitude | 14.59 (0.003) | 14.58 (0.02) | |||
| r magnitude | 15.07 (0.004) | 15.11 (0.02) | |||
| i magnitude | 15.40 (0.004) | 15.41 (0.01) | |||
| z magnitude | 15.75 (0.006) | 15.74 (0.03) | |||
| G magnitude | 14.85 (0.003) | 14.88 (0.0008) | 14.85 (0.003) | ||
| BP magnitude | 14.73 (0.003) | 14.69 (0.008) | |||
| RP magnitude | 15.10 (0.004) | 15.10 (0.002) | |||
| Pan g magnitude | 14.70 (0.003) | ||||
| Pan r magnitude | 15.10 (0.001) | ||||
| Pan i magnitude | 15.45 (0.004) | ||||
| Pan z magnitude | 15.72 (0.003) | ||||
| Pan y magnitude | 15.88 (0.007) | ||||
| E(B-V) | 0.019 | ||||
* 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.