All names: Gaia EDR3 2051078953817324672, SDSS J192059.77+372220.0, Gaia DR3 2051078953817324672, SDSS J192059.78+372220.0, Gaia DR2 2051078953817324672, UCAC4 637-067297, TIC 122366140, ZTF J192059.77+372220.0, 2MASS J19205977+3722201, ATO J290.2490+37.3722, SDSSJ192059.78+372220.0, SDSS J192059.78+372220.02
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 20 59.77 (0.02) | 19 20 59.78 | 19 20 59.78 | 19 20 59.77 (0.04) | 19 20 59.77 (0.02) | ||||
| Declination | 37 22 19.98 (0.03) | 37 22 20.02 | 37 22 20.00 | 37 22 19.98 (0.05) | 37 22 20.02 (0.03) | ||||
| Spectral type | sdB+dM | sdB | sdB | ||||||
| Effective temperature | [K] | 27600.0 (600) | 29031.0 (93) | ||||||
| log(g) | [cgs] | 5.40 (0.1) | 5.53 (0.02) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.50 (0.03) | 0.40 (0.05) | 0.40 (0.05) | 0.50 (0.03) | ||||
| Distance | [pc] | 2006.85 (117) | 2508.15 (307) | 2507.93 (307) | 2006.82 (117) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -2.144898117 (0.03) | -2.15 (0.08) | -2.150292039 (0.08) | -2.145 (0.03) | ||||
| Proper motion (declination) | [mas/yr] | -2.629953935 (0.03) | -2.809 (0.08) | -2.809173671 (0.08) | -2.63 (0.03) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.90 (0.06) | ||||||||
| V magnitude | 15.74 (0.01) | ||||||||
| R magnitude | 16.04 (0.04) | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.19 (0.08) | 16.19 (0.08) | |||||||
| H magnitude | 16.27 (0.2) | 16.27 (0.2) | |||||||
| K magnitude | 15.60 (0.2) | 15.60 (0.2) | |||||||
| u magnitude | 15.64 (0.005) | 15.62 (0.005) | 15.63 (0.01) | 15.62 (0.005) | |||||
| g magnitude | 15.59 (0.003) | 15.58 (0.003) | 15.66 (0.007) | 15.68 | |||||
| r magnitude | 15.87 (0.004) | 15.85 (0.004) | 15.86 (0.01) | 15.85 (0.003) | |||||
| i magnitude | 16.11 (0.004) | 16.11 (0.004) | 16.13 (0.01) | 16.11 (0.004) | |||||
| z magnitude | 16.35 (0.009) | 16.34 (0.009) | 16.35 (0.01) | 16.33 (0.009) | |||||
| G magnitude | 15.76 (0.006) | 15.77 (0.003) | 15.77 | 15.76 (0.004) | |||||
| BP magnitude | 15.71 (0.006) | 15.67 (0.01) | 15.67 | ||||||
| RP magnitude | 15.85 (0.008) | 15.84 (0.01) | 15.84 | ||||||
| Pan g magnitude | 15.69 (0.02) | 15.69 (0.02) | |||||||
| Pan r magnitude | 15.91 (0.01) | 15.91 (0.01) | |||||||
| Pan i magnitude | 16.26 (0.01) | 16.26 (0.01) | |||||||
| Pan z magnitude | 16.47 (0.001) | 16.47 (0.001) | |||||||
| Pan y magnitude | 16.60 (0.009) | 16.60 (0.009) | |||||||
| E(B-V) | 0.104 | ||||||||
* 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.