All names: SDSS J102029.80+425021.9, FBS 1017+430, HIDDEN NAME PG 1017+430, TIC 150229452, PG1017+430, Gaia DR3 805690720332579456, 2MASS J10202979+4250218, LAMOST J102029.80+425021.9, Gaia DR2 805690720332579456, PG 1017+431, FBS B 276
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 10 20 29.83 | 10 20 29.81 (0.04) | ||
| Declination | 42 50 22.04 | 42 50 21.93 (0.04) | ||
| Spectral type | sdOB | sdO8VIHe1 | ||
| Effective temperature | [K] | 40230.0 (1340) | ||
| log(g) | [cgs] | 5.11 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.57 (0.07) | 0.33 (0.06) | |
| Distance | [pc] | 1765.54 (224) | 3064.66 (559) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.692 (0.09) | -6.689 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.35 (0.1) | -4.274 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.28 | |||
| V magnitude | 15.31 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.02 (0.07) | 16.02 (0.07) | ||
| H magnitude | 16.12 (0.2) | 16.12 (0.2) | ||
| K magnitude | 15.88 (0.2) | 15.88 (0.2) | ||
| u magnitude | 14.60 (0.003) | 14.60 (0.003) | ||
| g magnitude | 14.94 (0.003) | 14.94 (0.003) | ||
| r magnitude | 15.52 (0.003) | 15.52 (0.003) | ||
| i magnitude | 15.87 (0.004) | 15.87 (0.004) | ||
| z magnitude | 16.25 (0.007) | 16.25 (0.007) | ||
| G magnitude | 15.28 (0.0006) | 15.26 (0.003) | ||
| BP magnitude | 15.03 (0.008) | |||
| RP magnitude | 15.59 (0.003) | |||
| Pan g magnitude | 15.09 (0.005) | |||
| Pan r magnitude | 15.54 (0.004) | |||
| Pan i magnitude | 15.92 (0.003) | |||
| Pan z magnitude | 16.22 (0.004) | |||
| Pan y magnitude | 16.41 (0.01) | |||
| 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.