All names: GALEX J074435.1+302108, Gaia DR2 879166065892619904, Gaia DR3 879166065892619904, UCAC2 42402037, SDSS J074435.14+302108.7, GALEX J074435.0+302108, SDSS J074435.14+302108.8, TIC 4373827, GALEXJ07445+3021, Gaia EDR3 879166065892619904, 2MASS J07443514+3021087, UCAC4 602-041981, LAMOST J074435.14+302108.7
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 07 44 35.14 (0.04) | 07 44 35.07 | 07 44 35.14 (0.04) | ||
| Declination | 30 21 08.66 (0.03) | 30 21 08.88 | 30 21 08.77 (0.03) | ||
| Spectral type | sdB | sdBHe3 | |||
| Effective temperature | [K] | 27910.0 (470) | |||
| log(g) | [cgs] | 5.42 (0.08) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.78 (0.04) | 0.72 (0.07) | 0.78 (0.04) | |
| Distance | [pc] | 1280.74 (67) | 1380.07 (133) | 1280.74 (67) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.44 (0.04) | -1.485 (0.1) | -1.44 (0.04) | |
| Proper motion (declination) | [mas/yr] | -6.825 (0.03) | -6.879 (0.07) | -6.825 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.57 (0.05) | ||||
| V magnitude | 14.79 (0.03) | ||||
| R magnitude | 15.00 (0.08) | ||||
| I magnitude | |||||
| J magnitude | 15.29 (0.04) | 15.29 (0.04) | |||
| H magnitude | 15.40 (0.1) | 15.40 (0.1) | |||
| K magnitude | 15.28 (0.1) | 15.28 (0.1) | |||
| u magnitude | 14.36 (0.004) | 14.36 (0.004) | |||
| g magnitude | 14.48 (0.003) | 14.48 (0.003) | |||
| r magnitude | 14.85 (0.003) | 14.85 (0.003) | |||
| i magnitude | 15.31 (0.004) | 15.31 (0.004) | |||
| z magnitude | 15.57 (0.005) | 15.57 (0.005) | |||
| G magnitude | 14.73 (0.003) | 14.74 (0.0007) | 14.73 (0.003) | ||
| BP magnitude | 14.60 (0.003) | 14.54 (0.009) | |||
| RP magnitude | 14.97 (0.004) | 14.97 (0.004) | |||
| Pan g magnitude | 14.56 (0.01) | ||||
| Pan r magnitude | 14.97 (0.002) | ||||
| Pan i magnitude | 15.31 (0.004) | ||||
| Pan z magnitude | 15.58 (0.005) | ||||
| Pan y magnitude | 15.75 (0.004) | ||||
| E(B-V) | 0.040 | ||||
* 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.