LAMOST J081845.28+121952.45

All names: 2MASS J08184528+1219515, Gaia EDR3 649480629472107648, Gaia DR3 649480629472107648, TIC 186853669, GALEX J081845.2+121952, Gaia DR2 649480629472107648, LAMOST J081845.28+121952.4, LAMOST J081845.28+121952.45

Parameter Unit Gaia EDR3 Stilism Guo et al. 2015 Zhao et al. 2013 Vincent et al. 2024 Simbad
Right ascension 08 18 45.27 (0.05) 08 18 45.28 08 18 45.27 08 18 45.28 (0.05)
Declination 12 19 51.92 (0.03) 12 19 52.45 12 19 51.92 12 19 51.53 (0.03)
Spectral type DA DA DA2
Effective temperature [K] 19662.0 (382) 22271.0 (531) 17968.0 (325)
log(g) [cgs] 8.21 (0.07) 8.34 (0.08) 7.97 (0.02)
Mass [M☉] 0.75 (0.04) 0.83 (0.05) 0.603 (0.01)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.1000 (0.02)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 8.22 (0.05) 8.22 8.22 (0.05)
Distance [pc] 121.71 (0.8) 107.00 121.71 121.71 (0.8)
Composition
Proper motion (right ascension) [mas/yr] -3.74 (0.07) -3.74 (0.07)
Proper motion (declination) [mas/yr] 24.138 (0.04) 24.138 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.45 (0.1)
H magnitude
K magnitude
u magnitude 16.32 16.32
g magnitude 16.18 16.18
r magnitude 16.57 16.57
i magnitude 16.88 16.88
z magnitude 17.19
G magnitude 16.36 (0.003) 16.36 16.36 (0.003)
BP magnitude 16.29 (0.004)
RP magnitude 16.53 (0.006)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.004

* Constant surface field

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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.