LP 821-3

All names: 2MASS J22533567-1438279, GALEX J225335.8-143826, NLTT 55150, TIC 188585794, Gaia EDR3 2410908771246898176, 225335.70-143828.19, Gaia DR3 2410908771246898176, LHS 3870, Gaia DR2 2410908771246898176, WDJ225335.70-143828.19, J2253-1438, LP 821-3, WDJ225335.7-143828.18

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 O'Brien et al. 2022 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 22 53 36.35 (0.1) 22 53 36.33 22 53 36.35 22 53 35.70 (0.1) 22 53 36.33
Declination -14 38 28.73 (0.09) -14 38 28.72 -14 38 28.73 -14 38 28.19 (0.09) -14 38 28.72
Spectral type DA DC: DA DA DA
Effective temperature [K] 5324.0 (96) 4989.0 (19) 5320.0 (100) 5349.0 5051.0 5359.0 (60)
log(g) [cgs] 8.10 (0.07) 7.88 (0.01) 8.10 (0.07) 8.12 7.92 8.12 (0.03)
Mass [M] 0.643 (0.04) 0.496 (0.01) 0.654 0.523 0.655 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 4.8600 5.1390 4.8710
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 27.35 (0.1) 27.35 (0.1) 27.35 (0.1) 27.40 (0.1) 27.35 (0.1) 27.35 27.35 (0.1) 27.35 (0.1)
Distance [pc] 36.56 (0.2) 36.56 (0.2) 36.56 (0.2) 36.50 (0.1) 36.57 (0.2) 36.56 36.56 (0.2) 36.57 (0.2)
Composition He
Proper motion (right ascension) [mas/yr] 583.9015564 (0.1) 583.5856541 (0.3) 583.902 (0.1) 583.5856541
Proper motion (declination) [mas/yr] -34.15737342 (0.1) -34.05396809 (0.2) -34.157 (0.1) -34.05396809
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.60
V magnitude
R magnitude
I magnitude
J magnitude 16.33 (0.02) 16.63 (0.1)
H magnitude 16.33 (0.2) 16.33 (0.2)
K magnitude 16.05 (0.05)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.51 (0.02) 17.53 17.51 17.51 (0.003) 17.53
BP magnitude 17.90 (0.02) 17.93 17.93
RP magnitude 16.93 (0.01) 16.95 16.95
Pan g magnitude 17.99 (0.004) 17.99 (0.004)
Pan r magnitude 17.48 (0.007) 17.48 (0.007)
Pan i magnitude 17.29 (0.004) 17.29 (0.004)
Pan z magnitude 17.21 (0.009) 17.21 (0.009)
Pan y magnitude 17.22 (0.01) 17.22 (0.01)
E(B-V) 0.001

* 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.