All names: GALEX 2686865574032572901, USNO-A2.0 1275-08124713, SDSS J124107.34+401715.2, PSO J124107.324+401715.162, Gaia DR2 1522020823542880000
Parameter | Unit | MWDD H | MWDD HE | Pan-STARRS DR1 | Gaia DR2 | sdss-wdms.org (29/04/2016) | SDSS DR12 | Simbad |
---|---|---|---|---|---|---|---|---|
Right ascension | 12 41 07.31 (0.4) | 12 41 07.34 | 12 41 07.34 | 12 41 07.34 | ||||
Declination | 40 17 15.06 (0.3) | 40 17 15.20 | 40 17 15.23 | 40 17 15.23 | ||||
Spectral type | WD+MS | WD+MS | WD+MS | DA+dM | ||||
Effective temperature | [K] | 8485.0 | 8669.0 | 12536.0 (562) | ||||
log(g) | [cgs] | 7.67 | 7.69 | 8.25 (0.1) | ||||
Mass | [M☉] | 0.42200000000000004 | 0.41200000000000003 | 0.76 (0.1) | ||||
log(Luminosity) | [L☉] | |||||||
Cooling age | [Gyr] | 0.6266 | 0.6187 | |||||
log(H/He) | ||||||||
log(C/He) | ||||||||
log(Ca/He) | ||||||||
log(Ca/H) | ||||||||
Parallax | [mas] | 3.32 (0.5) | ||||||
Distance | [pc] | 301.17 (48) | 397.00 (43) | |||||
Composition | ||||||||
Proper motion (right ascension) | [mas/yr] | -36.5157195018 (0.6) | -28.0 | |||||
Proper motion (declination) | [mas/yr] | -13.6406304586 (0.6) | -10.0 | |||||
Variability | ||||||||
Magnetic | ||||||||
Bd | [MG] | |||||||
Infrared excess (disk) | ||||||||
Binarity | WDMS | |||||||
B magnitude | 18.90 | |||||||
V magnitude | ||||||||
R magnitude | 19.10 | |||||||
I magnitude | ||||||||
J magnitude | ||||||||
H magnitude | ||||||||
K magnitude | ||||||||
u magnitude | 20.10 | 20.14 (0.04) | 20.14 | |||||
g magnitude | 19.61 | 19.62 (0.01) | 19.62 | |||||
r magnitude | 19.79 | 19.82 (0.02) | 19.82 | |||||
i magnitude | 19.82 | 19.84 (0.02) | 19.84 | |||||
z magnitude | 19.60 | 19.57 (0.06) | 19.57 | |||||
G magnitude | 19.78 | |||||||
BP magnitude | 19.66 | |||||||
RP magnitude | 19.27 | |||||||
Pan g magnitude | 19.64 (0.008) | |||||||
Pan r magnitude | 19.85 (0.01) | |||||||
Pan i magnitude | 19.88 (0.01) | |||||||
Pan z magnitude | 19.57 (0.06) | |||||||
Pan y magnitude | 19.43 (0.05) |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.