All names: SDSS J165404.25+303701.8, UCAC4 604-055247, TIC 159326686, PG 1652+307, 2MASS J16540426+3037017, Gaia EDR3 1312842039189917952, LB 966, SDSS J165404.26+303701.7, SDSS J165404.26+303701.8, Gaia DR3 1312842039189917952, UCAC2 42595142, GALEX J165404.2+303701, Gaia DR2 1312842039189917952, PG1652+307
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 54 04.26 (0.02) | 16 54 04.26 | 16 54 04.25 | 16 54 04.26 (0.03) | 16 54 04.26 (0.02) | 16 54 04.27 | |||
| Declination | 30 37 01.66 (0.03) | 30 37 01.80 | 30 37 02.25 | 30 37 01.66 (0.05) | 30 37 01.82 (0.03) | 30 37 01.81 | |||
| Spectral type | sdB+WD | sdB | SD_auto | ||||||
| Effective temperature | [K] | 24900.0 (800) | 27406.0 (119) | ||||||
| log(g) | [cgs] | 5.64 (0.05) | 5.48 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.64 (0.04) | 0.70 (0.05) | 0.70 (0.05) | 0.64 (0.04) | ||||
| Distance | [pc] | 1558.48 (86) | 1431.64 (93) | 1431.57 (93) | 1558.36 (85) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 2.950003289 (0.03) | 2.809 (0.07) | 2.809097352 (0.07) | 2.95 (0.04) | -0.4 | |||
| Proper motion (declination) | [mas/yr] | -10.52908723 (0.04) | -10.563 (0.1) | -10.56324079 (0.1) | -10.529 (0.04) | -7.3 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.20 (0.04) | ||||||||
| V magnitude | 15.41 (0.04) | ||||||||
| R magnitude | 15.77 (0.1) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.95 (0.1) | 15.95 (0.1) | |||||||
| H magnitude | 16.83 | ||||||||
| K magnitude | 15.44 | ||||||||
| u magnitude | 15.27 (0.005) | 15.27 (0.005) | 15.26 (0.005) | 15.34 (0.02) | |||||
| g magnitude | 15.08 (0.004) | 15.08 (0.004) | 15.08 (0.004) | 15.10 (0.01) | |||||
| r magnitude | 15.56 (0.004) | 15.56 (0.004) | 15.55 (0.004) | 15.57 (0.01) | |||||
| i magnitude | 15.89 (0.005) | 15.89 (0.005) | 15.88 (0.005) | 15.88 (0.01) | |||||
| z magnitude | 16.17 (0.007) | 16.18 (0.007) | 16.17 (0.007) | 16.16 (0.02) | |||||
| G magnitude | 15.33 (0.002) | 15.35 (0.0007) | 15.35 | 15.33 (0.003) | |||||
| BP magnitude | 15.21 (0.002) | 15.16 (0.007) | 15.16 | ||||||
| RP magnitude | 15.58 (0.002) | 15.57 (0.003) | 15.57 | ||||||
| Pan g magnitude | 15.17 (0.002) | 15.16 (0.002) | |||||||
| Pan r magnitude | 15.57 (0.001) | 15.57 (0.001) | |||||||
| Pan i magnitude | 15.91 (0.002) | 15.91 (0.002) | |||||||
| Pan z magnitude | 16.17 (0.003) | 16.17 (0.003) | |||||||
| Pan y magnitude | 16.35 (0.005) | 16.35 (0.005) | |||||||
| E(B-V) | 0.025 | ||||||||
* 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.