All names: TIC 383217734, Gaia DR3 3844661557225496064, LAMOST J093059.63+025032.4, GALEX J093059.6+025032, Gaia EDR3 3844661557225496064, PG 0928+031, Gaia DR2 3844661557225496064, 2MASS J09305963+0250325, PG0928+031, UCAC2 32701170, UCAC4 465-043784, LAMOST J093059.63+025032.3, SDSS J093059.63+025032.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 30 59.63 (0.04) | 09 30 59.63 | 09 30 59.68 | 09 30 59.63 (0.05) | 09 30 59.63 (0.04) | 09 30 59.63 | |||
| Declination | 02 50 32.33 (0.03) | 02 50 32.39 | 02 50 32.75 | 02 50 32.33 (0.05) | 02 50 32.35 (0.03) | 02 50 32.35 | |||
| Spectral type | sdB | sdO | SDO | ||||||
| Effective temperature | [K] | 30000.0 (600) | 29422.0 (172) | ||||||
| log(g) | [cgs] | 5.67 (0.2) | 5.42 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.91 (0.04) | 1.00 (0.06) | 1.00 (0.06) | 0.91 (0.04) | ||||
| Distance | [pc] | 1098.07 (49) | 999.90 (59) | 999.86 (59) | 1098.06 (49) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -5.94722912 (0.04) | -5.758 (0.1) | -5.757927578 (0.1) | -5.947 (0.04) | -1.3 | |||
| Proper motion (declination) | [mas/yr] | -1.134870036 (0.03) | -1.21 (0.08) | -1.21049522 (0.08) | -1.135 (0.03) | -3.5 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.77 (0.03) | ||||||||
| V magnitude | 14.93 (0.08) | ||||||||
| R magnitude | 15.32 (0.04) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.54 (0.06) | 15.52 (0.006) | |||||||
| H magnitude | 15.52 (0.1) | 15.62 (0.01) | |||||||
| K magnitude | 15.38 (0.2) | 15.73 (0.02) | |||||||
| u magnitude | 14.53 (0.003) | 14.53 (0.003) | 14.53 (0.003) | 14.51 (0.02) | |||||
| g magnitude | 14.68 (0.003) | 14.68 (0.003) | 14.68 (0.003) | 14.71 (0.02) | |||||
| r magnitude | 15.15 (0.003) | 15.15 (0.003) | 15.15 (0.003) | 15.14 (0.02) | |||||
| i magnitude | 15.47 (0.004) | 15.47 (0.004) | 15.47 (0.004) | 15.46 (0.02) | |||||
| z magnitude | 15.78 (0.006) | 15.78 (0.006) | 15.78 (0.006) | 15.76 (0.02) | |||||
| G magnitude | 14.93 (0.001) | 14.95 (0.0007) | 14.95 | 14.93 (0.003) | |||||
| BP magnitude | 14.80 (0.001) | 14.75 (0.008) | 14.75 | ||||||
| RP magnitude | 15.16 (0.002) | 15.16 (0.003) | 15.16 | ||||||
| Pan g magnitude | 14.78 (0.001) | 14.78 (0.001) | |||||||
| Pan r magnitude | 15.16 (0.003) | 15.15 (0.003) | |||||||
| Pan i magnitude | 15.49 (0.003) | 15.49 (0.003) | |||||||
| Pan z magnitude | 15.77 (0.003) | 15.77 (0.003) | |||||||
| Pan y magnitude | 15.92 (0.005) | 15.92 (0.005) | |||||||
| E(B-V) | 0.029 | ||||||||
* 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.