All names: Gaia EDR3 4444887256933138816, LB 983, 2MASS J17013079+1102537, GALEX J170130.7+110254, SDSS J170130.80+110253.7, UCAC2 35773221, UCAC4 506-063891, Gaia DR2 4444887256933138816, PG1659+111, TIC 291611055, SDSS J170130.80+110253.6, PG 1659+111, Gaia DR3 4444887256933138816
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 17 01 30.80 (0.03) | 17 01 30.83 | 17 01 30.81 (0.03) | ||
| Declination | 11 02 53.68 (0.03) | 11 02 53.61 | 11 02 53.62 (0.03) | ||
| Spectral type | sdOB | sdBO | |||
| 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] | 0.67 (0.05) | 0.74 (0.06) | 0.67 (0.05) | |
| Distance | [pc] | 1483.90 (108) | 1349.16 (117) | 1483.90 (108) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -7.541 (0.04) | -7.152 (0.1) | -7.541 (0.04) | |
| Proper motion (declination) | [mas/yr] | 3.739 (0.04) | 3.766 (0.1) | 3.739 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.22 (0.02) | ||||
| V magnitude | 15.35 (0.04) | ||||
| R magnitude | 15.89 (0.06) | ||||
| I magnitude | |||||
| J magnitude | 15.83 (0.07) | 15.83 (0.07) | |||
| H magnitude | 15.73 (0.1) | 15.73 (0.1) | |||
| K magnitude | 15.58 | ||||
| u magnitude | 14.86 (0.004) | ||||
| g magnitude | 15.09 (0.003) | ||||
| r magnitude | 15.52 (0.003) | ||||
| i magnitude | 15.83 (0.004) | ||||
| z magnitude | 16.13 (0.007) | ||||
| G magnitude | 15.31 (0.003) | 15.33 (0.0007) | 15.31 (0.003) | ||
| BP magnitude | 15.19 (0.004) | 15.14 (0.01) | |||
| RP magnitude | 15.53 (0.005) | 15.53 (0.002) | |||
| Pan g magnitude | 15.17 (0.0003) | ||||
| Pan r magnitude | 15.54 (0.002) | ||||
| Pan i magnitude | 15.87 (0.002) | ||||
| Pan z magnitude | 16.11 (0.003) | ||||
| Pan y magnitude | 16.28 (0.005) | ||||
| E(B-V) | 0.071 | ||||
* 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.