All names: NLTT 46495, LSPM J1825+5538W, LP 140-22, ** LDS 4786A, USNO-B1.0 1456-00277688, Gaia DR3 2150591799870095872, Gaia EDR3 2150591799870095872, WDJ182518.67+553847.70, WDS J18254+5539A, Gaia DR2 2150591799870095872
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 | 18 25 18.37 (0.1) | 18 25 18.38 | 18 25 18.37 | 18 25 18.67 (0.1) | 18 25 18.38 | |||||
Declination | 55 38 45.16 (0.1) | 55 38 45.24 | 55 38 45.16 | 55 38 47.70 (0.1) | 55 38 45.24 | |||||
Spectral type | DC: | DC | ||||||||
Effective temperature | [K] | 4600.0 | 4288.0 | 4609.0 (74) | ||||||
log(g) | [cgs] | 7.85 | 7.61 | 7.86 (0.04) | ||||||
Mass | [M☉] | 0.49 | 0.358 | 0.495 (0.03) | ||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 5.6330 | 4.0150 | |||||||
log(H/He) | ||||||||||
log(C/He) | ||||||||||
log(Ca/He) | ||||||||||
log(Ca/H) | ||||||||||
Parallax | [mas] | 20.90 (0.1) | 20.71 (0.2) | 20.90 | 20.90 (0.1) | 20.71 (0.2) | ||||
Distance | [pc] | 47.85 (0.3) | 48.29 (0.4) | 47.85 | 47.85 (0.3) | 48.29 (0.4) | ||||
Composition | ||||||||||
Proper motion (right ascension) | [mas/yr] | -155.1961032 (0.2) | -155.7941001 (0.4) | -155.196 (0.2) | -155.7941001 | |||||
Proper motion (declination) | [mas/yr] | -158.702195 (0.2) | -158.7251182 (0.3) | -158.702 (0.2) | -158.7251182 | |||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | 19.10 | |||||||||
V magnitude | ||||||||||
R magnitude | 18.00 | |||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | ||||||||||
g magnitude | ||||||||||
r magnitude | ||||||||||
i magnitude | ||||||||||
z magnitude | ||||||||||
G magnitude | 18.49 (0.03) | 18.51 | 18.49 | 18.49 (0.003) | 18.51 | |||||
BP magnitude | 19.07 (0.03) | 19.03 | 19.03 | |||||||
RP magnitude | 17.78 (0.02) | 17.78 | 17.78 | |||||||
Pan g magnitude | 19.22 (0.008) | |||||||||
Pan r magnitude | 18.46 (0.007) | |||||||||
Pan i magnitude | 18.12 (0.005) | |||||||||
Pan z magnitude | 18.00 (0.007) | |||||||||
Pan y magnitude | 17.98 (0.02) | |||||||||
E(B-V) | 0.006 |
* 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.