All names: SDSS J122557.09+211402.0, WDJ122557.03+211402.73, LSPM J1225+2114, Gaia DR2 3952184341199008384, LP 376-65, NLTT 30718, SDSS J122557.10+211402.1, USNO-B1.0 1112-00209950, Gaia DR3 3952184341199008384, Gaia EDR3 3952184341199008384, WDJ122557.03+211402.72
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 25 57.23 (0.2) | 12 25 57.22 | 12 25 57.23 | 12 25 57.04 (0.2) | 12 25 57.22 | |||||
Declination | 21 14 00.59 (0.2) | 21 14 00.66 | 21 14 00.59 | 21 14 02.73 (0.2) | 21 14 00.66 | |||||
Spectral type | DA: | DA | ||||||||
Effective temperature | [K] | 4545.0 | 4228.0 | 4517.0 (105) | ||||||
log(g) | [cgs] | 7.15 | 6.84 | 7.29 (0.07) | ||||||
Mass | [M☉] | 0.204 | 0.124 | 0.244 (0.04) | ||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 2.1790 | ||||||||
log(H/He) | ||||||||||
log(C/He) | ||||||||||
log(Ca/He) | ||||||||||
log(Ca/H) | ||||||||||
Parallax | [mas] | 12.90 (0.3) | 11.85 (0.4) | 12.90 | 12.90 (0.3) | 11.85 (0.4) | ||||
Distance | [pc] | 77.53 (2) | 84.39 (3) | 77.53 | 77.53 (2) | 84.39 (3) | ||||
Composition | ||||||||||
Proper motion (right ascension) | [mas/yr] | 168.2580321 (0.3) | 170.9661 (0.5) | 168.258 (0.3) | 170.9661 | |||||
Proper motion (declination) | [mas/yr] | -133.8816413 (0.3) | -133.6882989 (0.4) | -133.882 (0.3) | -133.6882989 | |||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | 20.50 | |||||||||
V magnitude | ||||||||||
R magnitude | 18.80 | |||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 21.72 (0.1) | 22.07 (0.2) | ||||||||
g magnitude | 19.83 (0.01) | 19.91 (0.02) | ||||||||
r magnitude | 18.95 (0.01) | 18.91 (0.01) | ||||||||
i magnitude | 18.61 (0.01) | 18.60 (0.01) | ||||||||
z magnitude | 18.46 (0.02) | 18.43 (0.03) | ||||||||
G magnitude | 18.98 (0.04) | 19.01 | 18.98 | 18.98 (0.004) | 19.01 | |||||
BP magnitude | 19.60 (0.04) | 19.65 | 19.65 | |||||||
RP magnitude | 18.28 (0.02) | 18.26 | 18.26 | |||||||
Pan g magnitude | 19.74 (0.02) | |||||||||
Pan r magnitude | 18.95 (0.007) | |||||||||
Pan i magnitude | 18.62 (0.01) | |||||||||
Pan z magnitude | 18.48 (0.009) | |||||||||
Pan y magnitude | 18.45 (0.01) | |||||||||
E(B-V) | 0.003 |
* 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.