NLTT 57996

All names: Gaia EDR3 2646617809106367360, LSPM J2347+0223, Gaia DR2 2646617809106367360, TIC 293358546, PM J23478+0223, LP 643-71, PSO J356.9731+02.3941, NLTT 57996, Gaia DR3 2646617809106367360, SDSS J234753.62+022339.7, 23478+0223, USNO-B1.0 0923-00776538, 2MASS J23475375+0223407, WDJ234753.74+022340.82, J2347+0223

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 Blouin et al. 2019 MWDD H Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 23 47 53.54 (0.3) 23 47 53.55 (0.2) 23 47 53.54 23 47 53.73 (0.3) 23 47 53.55
Declination 02 23 38.82 (0.2) 02 23 38.89 (0.1) 02 23 38.82 02 23 40.83 (0.2) 02 23 38.89
Spectral type DA DA DA DA DC: DA
Effective temperature [K] 5134.0 (25) 5115.0 (40) 5129.0 5120.0 (48) 5189.0 (62)
log(g) [cgs] 7.20 (0.03) 7.16 (0.05) 7.17 8.00 (0) 7.23 (0.04)
Mass [M] 0.226 (0.01) 0.217 (0.01) 0.219 0.58 (0.1) 0.238 (0.02)
log(Luminosity) [L] -4.01
Cooling age [Gyr] 1.4000 1.4610 (0.06) 1.4580
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 14.70 (0.2) 14.38 (0.3) 14.38 (0.3) 14.38 (0.3) 14.70 14.70 (0.2) 14.38 (0.3)
Distance [pc] 68.01 (1) 69.54 (1) 69.55 (1) 69.55 (1) 42.70 (5) 68.01 68.01 (1) 69.55 (1)
Composition H H H H
Proper motion (right ascension) [mas/yr] -180.2117827 (0.4) -180.926846 (0.5) -180.212 (0.4) -180.926846
Proper motion (declination) [mas/yr] -125.3179799 (0.2) -124.9792652 (0.3) -125.318 (0.2) -124.9792652
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.80
V magnitude
R magnitude 17.50
I magnitude
J magnitude 16.73 (0.02) 16.44 (0.1) 16.44 16.44 (0.1)
H magnitude 16.39 (0.03) 16.28 (0.3) 16.28 16.28 (0.2)
K magnitude 16.41 (0.04) 16.30
u magnitude 20.03 (0.05) 20.00 19.90 (0.04) 20.03 (0.05)
g magnitude 18.56 18.54 (0.008) 18.56 (0.008)
r magnitude 17.91 17.91 (0.003) 17.92 (0.006)
i magnitude 17.65 17.71 (0.005) 17.66 (0.007)
z magnitude 17.60 17.63 (0.01) 17.61 (0.02)
G magnitude 18.00 (0.02) 17.99 18.00 18.00 (0.005) 17.99
BP magnitude 18.37 (0.02) 18.42 18.42
RP magnitude 17.33 (0.006) 17.34 17.34
Pan g magnitude 18.49 (0.009) 18.49 (0.01) 18.49 (0.01)
Pan r magnitude 17.91 (0.003) 17.91 (0.003) 17.91 (0.003)
Pan i magnitude 17.71 (0.004) 17.71 (0.005) 17.71 (0.005)
Pan z magnitude 17.63 (0.009) 17.63 (0.01) 17.63 (0.01)
Pan y magnitude 17.58 (0.02) 17.58 (0.02) 17.58 (0.02)
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.