All names: ASCC 416422, Gaia DR2 1355264565043431040, Gaia EDR3 1355264565043431040, AP J17093153+4340531, G 203-47B, GJ 3991, NLTT 44290, Gaia DR3 1355264565043431040, PM J17095+4340, G 203-47, USNO 752, TYC 3084-558-1, UCAC4 669-061850, [RHG95] 2708, G 203-47A, TIC 219085795, CNS5 4198, USNO-B1.0 1336-00280975, LSPM J1709+4340, WD 1708+437, WISEA J170931.87+434049.8, PLX 3899.01, 2MASS J17093153+4340531, HIC 83945, HIP 83945
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 17 09 32.03 (0.4) | 17 09 32.02 (0.4) | 17 09 31.54 (0.4) | 17 09 31.51 | ||
| Declination | 43 40 48.38 (0.4) | 43 40 48.52 (0.5) | 43 40 52.77 (0.4) | 43 40 48.00 | ||
| Spectral type | M3.5V | WD/M | ||||
| 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] | 131.60 (0.4) | 134.60 (0.5) | 131.60 (0.4) | ||
| Distance | [pc] | 7.60 (0.02) | 7.43 (0.03) | 7.60 (0.02) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 332.0321475 (0.5) | 332.591 (1) | 332.032 (0.5) | ||
| Proper motion (declination) | [mas/yr] | -274.5009947 (0.5) | -271.834 (1) | -274.501 (0.5) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | yes | |||||
| B magnitude | 13.46 | |||||
| V magnitude | 13.67 (0.006) | |||||
| R magnitude | 11.51 (0.05) | |||||
| I magnitude | ||||||
| J magnitude | 7.38 (0.02) | |||||
| H magnitude | 6.76 (0.02) | |||||
| K magnitude | 6.49 (0.02) | |||||
| u magnitude | ||||||
| g magnitude | 12.50 (0.05) | |||||
| r magnitude | 11.21 (0.01) | |||||
| i magnitude | 9.79 (0.05) | |||||
| z magnitude | ||||||
| G magnitude | 10.45 (0.002) | 10.45 | 10.45 (0.003) | |||
| BP magnitude | 12.08 (0.002) | 12.10 | ||||
| RP magnitude | 9.21 (0.001) | 9.22 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.000 | |||||
* 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.