All names: BPS CS 22959-0081, Gaia DR2 6438020049585255040, Gaia DR3 6438020053879564544, Gaia EDR3 6438020053879564544, USNO-B1.0 0245-00749845, 2MASS J18490202-6525144, TIC 464420052, WD 1844-654
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 18 49 02.03 (0.04) | 18 49 02.03 (0.4) | 18 49 02.04 (0.04) | 18 49 01.08 | ||
| Declination | -65 25 14.65 (0.05) | -65 25 14.66 (0.5) | -65 25 14.48 (0.05) | -65 25 19.92 | ||
| Spectral type | DA | DA | ||||
| 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] | 4.93 (0.07) | 3.90 (0.7) | 4.93 (0.07) | ||
| Distance | [pc] | 202.69 (3) | 256.42 (46) | 202.69 (3) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -5.130955378 (0.05) | -3.426363455 (0.7) | -5.131 (0.05) | ||
| Proper motion (declination) | [mas/yr] | -11.11683183 (0.07) | 0.321249451 (1) | -11.117 (0.07) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 15.70 | |||||
| V magnitude | 15.20 | |||||
| R magnitude | 14.70 | |||||
| I magnitude | ||||||
| J magnitude | 12.70 (0.02) | |||||
| H magnitude | 12.04 (0.03) | |||||
| K magnitude | 11.83 (0.02) | |||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 15.15 (0.001) | 14.92 | 15.15 (0.003) | |||
| BP magnitude | 15.24 (0.003) | 15.25 | ||||
| RP magnitude | 13.97 (0.003) | 13.99 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.022 | |||||
* 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.