LP 823-44

All names: J2343-1659, CNS5 5849, NLTT 57760, PSO J355.8113-16.9956, LP 823-44, Gaia DR2 2394366515727615104, Gaia DR3 2394366515727615104, Gaia EDR3 2394366515727615104, WDJ234315.00-165941.02, 2MASS J23431502-1659405

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Blouin et al. 2019 Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 23 43 14.70 (0.07) 23 43 14.71 (0.1) 23 43 14.70 23 43 15.00 (0.07) 23 43 14.71
Declination -16 59 44.76 (0.07) -16 59 44.64 (0.1) -16 59 44.76 -16 59 41.02 (0.07) -16 59 44.64
Spectral type DZ DZ DZ DZ: DZ
Effective temperature [K] 5059.0 (68) 4528.0 (12) 4580.0 (30) 4956.0 (28)
log(g) [cgs] 8.24 (0.04) 7.92 (0.009) 7.99 (0.04) 8.27 (0.01)
Mass [M] 0.727 (0.03) 0.519 (0.008) 0.563 (0.02) 0.746 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 6.1800 6.8790 (0.4)
log(H/He)
log(C/He)
log(Ca/He) -10.52 -10.52
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] 40.34 (0.08) 40.34 (0.08) 40.32 (0.2) 40.32 (0.2) 40.32 (0.2) 40.34 40.34 (0.08) 40.32 (0.2)
Distance [pc] 24.79 (0.05) 24.79 (0.05) 24.80 (0.1) 24.80 (0.1) 24.80 (0.1) 24.79 24.79 (0.05) 24.80 (0.1)
Composition He He
Proper motion (right ascension) [mas/yr] -271.5571714 (0.09) -271.446 (0.3) -271.557 (0.09) -271.4456975
Proper motion (declination) [mas/yr] -233.4373826 (0.07) -233.281 (0.2) -233.437 (0.07) -233.2811496
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude 17.01
R magnitude
I magnitude
J magnitude 15.95 (0.01) 15.80 (0.06) 15.80 (0.06)
H magnitude 16.00 (0.2) 16.00 (0.2) 16.00 (0.2)
K magnitude 15.63 (0.02)
u magnitude
g magnitude 17.66 (0.009)
r magnitude 17.09 (0.003)
i magnitude 16.88 (0.004)
z magnitude 16.80 (0.006)
G magnitude 17.13 (0.01) 17.14 17.13 17.13 (0.003) 17.14
BP magnitude 17.59 (0.01) 17.63 17.63
RP magnitude 16.54 (0.007) 16.54 16.54
Pan g magnitude 17.66 (0.009) 17.66 (0.009) 17.66 (0.009)
Pan r magnitude 17.09 (0.003) 17.09 (0.003) 17.09 (0.003)
Pan i magnitude 16.88 (0.004) 16.88 (0.004) 16.88 (0.004)
Pan z magnitude 16.80 (0.007) 16.80 (0.006) 16.80 (0.006)
Pan y magnitude 16.79 (0.007) 16.79 (0.006) 16.79 (0.006)
E(B-V) 0.000

* 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.