All names: SDSS J121939.53+294618.9, LAMOST J121939.53+294619.0, SDSS J121939.53+294619.0, Gaia DR3 4013439096055072512, Gaia EDR3 4013439096055072512, GALEX J121939.5+294619, SDSS J121939.54+294619.0, Gaia DR2 4013439096055072512
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 19 39.51 (0.3) | 12 19 39.53 | 12 19 39.51 (0.4) | 12 19 39.54 (0.3) | 12 19 39.54 | ||||||
Declination | 29 46 19.08 (0.2) | 29 46 18.99 | 29 46 19.08 (0.2) | 29 46 18.95 (0.2) | 29 46 19.03 | ||||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 21501.0 | 25820.0 (741) | ||||||||
log(g) | [cgs] | 6.77 | 7.83 (0.1) | ||||||||
Mass | [M☉] | 0.224 | 0.555 (0.06) | ||||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | ||||||||||
log(H/He) | |||||||||||
log(C/He) | |||||||||||
log(Ca/He) | |||||||||||
log(Ca/H) | |||||||||||
log(C/H) | |||||||||||
log(N/H) | |||||||||||
log(O/H) | |||||||||||
log(Na/H) | |||||||||||
log(Mg/H) | |||||||||||
log(Al/H) | |||||||||||
log(Si/H) | |||||||||||
log(P/H) | |||||||||||
log(S/H) | |||||||||||
log(Sc/H) | |||||||||||
log(Ti/H) | |||||||||||
log(Cr/H) | |||||||||||
log(Mn/H) | |||||||||||
log(Fe/H) | |||||||||||
log(Ni/H) | |||||||||||
Parallax | [mas] | 1.06 (0.3) | 0.73 (0.4) | 1.06 (0.3) | |||||||
Distance | [pc] | 945.13 (286) | 1367.86 (724) | 945.09 (286) | |||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | -22.93097202 (0.4) | -23.96296101 (0.9) | -22.931 (0.4) | |||||||
Proper motion (declination) | [mas/yr] | 8.140272239 (0.3) | 8.459159638 (0.4) | 8.14 (0.3) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 19.01 (0.02) | 19.01 (0.02) | 19.05 (0.03) | ||||||||
g magnitude | 19.15 (0.01) | 19.15 (0.01) | 19.16 (0.02) | ||||||||
r magnitude | 19.60 (0.02) | 19.60 (0.02) | 19.63 (0.02) | ||||||||
i magnitude | 19.92 (0.03) | 19.91 (0.03) | 19.94 (0.03) | ||||||||
z magnitude | 20.16 (0.1) | 20.18 (0.1) | 20.18 (0.1) | ||||||||
G magnitude | 19.40 (0.03) | 19.48 | 19.40 (0.005) | ||||||||
BP magnitude | 19.34 (0.03) | ||||||||||
RP magnitude | 19.54 (0.09) | ||||||||||
Pan g magnitude | 19.20 (0.004) | ||||||||||
Pan r magnitude | 19.59 (0.01) | ||||||||||
Pan i magnitude | 19.95 (0.02) | ||||||||||
Pan z magnitude | 20.15 (0.04) | ||||||||||
Pan y magnitude | 19.81 (0.2) | ||||||||||
E(B-V) | 0.014 |
* 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.