All names: TIC 418477113, ** LDS 2483B, CCDM J21031+3959B, 2MASS J21030864+3959516, Gaia DR3 1873104232144349056, EGGR 501, LP 234-1099 B, WD 2101+398, WDS J21031+3959B, Gaia DR2 1873104232144349056, IDS 20593+3936 B, Gaia EDR3 1873104232144349056, USNO-B1.0 1299-00418319
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 21 03 08.64 (0.1) | 21 03 08.64 (0.1) | 21 03 08.64 (0.1) | 21 03 06.65 | ||
| Declination | 39 59 51.93 (0.1) | 39 59 51.93 (0.1) | 39 59 52.01 (0.1) | 39 59 55.32 | ||
| Spectral type | DC9 | DC9 | ||||
| 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] | 0.08 (0.1) | 0.26 (0.2) | 0.08 (0.1) | ||
| Distance | [pc] | 12886.08 (21433) | 3915.43 (2640) | 12886.60 (21439) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -2.652863942 (0.1) | -1.852 (0.3) | -2.653 (0.1) | ||
| Proper motion (declination) | [mas/yr] | -5.101567829 (0.1) | -5.834 (0.3) | -5.102 (0.1) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | yes | |||||
| B magnitude | 18.30 | |||||
| V magnitude | 19.00 | |||||
| R magnitude | 18.40 | |||||
| I magnitude | ||||||
| J magnitude | 16.46 (0.1) | |||||
| H magnitude | 15.89 (0.2) | |||||
| K magnitude | 15.20 (0.1) | |||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 18.41 (0.03) | 18.44 | 18.41 (0.003) | |||
| BP magnitude | 19.24 (0.03) | 19.17 | ||||
| RP magnitude | 17.54 (0.009) | 17.53 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.638 | |||||
* 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.