All names: SDSS J140454.86+575007.91, Gaia DR2 1658158470643864576, SDSS J140454.86+575007.5, Gaia DR3 1658158470643864576, SDSS J140454.86+575007.9, Gaia EDR3 1658158470643864576
Parameter | Unit | Gaia EDR3 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 14 04 54.86 (0.5) | 14 04 54.86 | 14 04 54.86 (1) | 14 04 54.87 (0.5) | ||||||
Declination | 57 50 07.37 (0.5) | 57 50 07.58 | 57 50 07.37 (0.7) | 57 50 07.60 (0.5) | ||||||
Spectral type | DC: | DC: | DC: | DC | DC | |||||
Effective temperature | [K] | 10644.0 | 10334.0 | 7947.0 (270) | ||||||
log(g) | [cgs] | 8.37 | 8.26 | 8.00 (0) | ||||||
Mass | [M☉] | 0.837 | 0.745 | |||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.8869 | 0.8400 | |||||||
log(H/He) | ||||||||||
log(C/He) | ||||||||||
log(Ca/He) | ||||||||||
log(Ca/H) | ||||||||||
Parallax | [mas] | 4.15 (0.5) | 2.42 (0.8) | 4.15 (0.5) | ||||||
Distance | [pc] | 240.85 (31) | 413.26 (133) | 240.85 (31) | ||||||
Composition | ||||||||||
Proper motion (right ascension) | [mas/yr] | -5.537963734 (0.7) | -4.524823348 (2) | -5.538 (0.7) | ||||||
Proper motion (declination) | [mas/yr] | -14.80995 (0.6) | -13.63453697 (1) | -14.81 (0.6) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | ||||||||||
V magnitude | ||||||||||
R magnitude | ||||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 21.29 (0.1) | 21.26 (0.1) | 21.26 (0.1) | |||||||
g magnitude | 20.65 (0.03) | 20.71 (0.03) | 20.64 (0.03) | |||||||
r magnitude | 20.51 (0.04) | 20.61 (0.04) | 20.61 (0.04) | |||||||
i magnitude | 20.51 (0.07) | 20.60 (0.07) | 20.60 (0.07) | |||||||
z magnitude | 21.10 (0.4) | 21.22 (0.3) | 21.22 (0.3) | |||||||
G magnitude | 20.54 (0.08) | 20.62 | 20.54 (0.007) | |||||||
BP magnitude | 20.64 (0.08) | 20.71 | ||||||||
RP magnitude | 20.21 (0.1) | 19.96 | ||||||||
Pan g magnitude | ||||||||||
Pan r magnitude | ||||||||||
Pan i magnitude | ||||||||||
Pan z magnitude | ||||||||||
Pan y magnitude | ||||||||||
E(B-V) | 0.017 |
* 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.