All names: LSPM J1404+0746, Gaia DR3 3722280587294958208, Gaia EDR3 3722280587294958208, GALEX J140447.4+074616, LP 559-28, SDSS J140447.44+074614.7, Gaia DR2 3722280587294958208, SDSS J140447.44+074614.6, SDSS J140447.43+074614.6, NLTT 36184, USNO-B1.0 0977-00299484
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 04 47.28 (0.4) | 14 04 47.44 | 14 04 47.29 (0.3) | 14 04 47.48 | 14 04 47.44 | |||
| Declination | 07 46 14.99 (0.3) | 07 46 14.63 | 07 46 14.97 (0.2) | 07 46 14.50 | 07 46 14.68 | |||
| Spectral type | DQ | DQ:DC | DC: | |||||
| Effective temperature | [K] | 6326.0 (24) | ||||||
| log(g) | [cgs] | 10.00 (0.006) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 9.87 (0.5) | 9.26 (0.3) | |||||
| Distance | [pc] | 101.32 (5) | 107.98 (4) | |||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -199.6656111 (0.6) | -202.9824399 (0.7) | |||||
| Proper motion (declination) | [mas/yr] | 40.70587704 (0.4) | 37.09817591 (0.6) | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 18.60 | |||||||
| V magnitude | ||||||||
| R magnitude | 18.30 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.35 (0.03) | 19.35 (0.03) | 19.47 (0.04) | |||||
| g magnitude | 18.72 (0.009) | 18.73 (0.009) | 18.95 (0.02) | |||||
| r magnitude | 18.50 (0.009) | 18.50 (0.009) | 18.66 (0.01) | |||||
| i magnitude | 18.43 (0.01) | 18.43 (0.01) | 18.60 (0.02) | |||||
| z magnitude | 18.38 (0.03) | 18.39 (0.03) | 18.65 (0.04) | |||||
| G magnitude | 19.03 (0.03) | 19.04 | ||||||
| BP magnitude | 18.87 (0.03) | 18.75 | ||||||
| RP magnitude | 18.26 (0.02) | 18.21 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.008 | |||||||
* 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.