All names: CNS5 4198, HIC 83945, PLX 3899.01, G 203-47, HIP 83945, PM J17095+4340, [RHG95] 2708, AP J17093153+4340531, TIC 219085795, TYC 3084-558-1, WD 1708+437, Gaia DR2 1355264565043431040, Gaia EDR3 1355264565043431040, 2MASS J17093153+4340531, WISEA J170931.87+434049.8, Gaia DR3 1355264565043431040, G 203-47B, UCAC4 669-061850, USNO 752, USNO-B1.0 1336-00280975, GJ 3991, LSPM J1709+4340, G 203-47A, ASCC 416422, NLTT 44290
| 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.