NLTT 40657

All names: 15359+2125, LSPM J1535+2125, PSO J233.9746+21.4193, USNO-B1.0 1114-00244411, SDSS J153554.02+212507.5, TIC 258045472, 2MASS J15355408+2125068, LP 384-21, NLTT 40657, GALEX J153554.0+212507, WD 1533+215, Gaia DR2 1211378350265079808, J1535+2125, Gaia DR3 1211378350265079808, WDJ153554.07+212506.58, PM J15359+2125, Gaia EDR3 1211378350265079808

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 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 15 35 53.91 (0.05) 15 35 53.91 (0.07) 15 35 53.91 15 35 54.07 (0.05) 15 35 53.91 15 35 53.57
Declination 21 25 09.94 (0.05) 21 25 09.84 (0.06) 21 25 09.94 21 25 06.58 (0.05) 21 25 09.84 21 25 00.84
Spectral type DA DA DA DA DA DA DA
Effective temperature [K] 6341.0 (11) 6265.0 (35) 6294.0 6500.0 (112) 6304.0 (39)
log(g) [cgs] 8.05 (0.006) 8.03 (0.02) 8.04 8.47 (0.2) 8.04 (0.01)
Mass [M] 0.621 (0.006) 0.606 (0.01) 0.61 0.89 (0.1) 0.616 (0.01)
log(Luminosity) [L] -3.88
Cooling age [Gyr] 2.1900 2.1230 (0.09) 2.1250
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] 21.48 (0.07) 21.40 (0.1) 21.39 (0.1) 21.40 (0.1) 21.48 21.48 (0.07) 21.40 (0.1)
Distance [pc] 46.56 (0.2) 46.73 (0.2) 46.74 (0.2) 46.74 (0.2) 37.60 (0.9) 46.56 46.56 (0.2) 46.74 (0.2)
Composition H H H H
Proper motion (right ascension) [mas/yr] -140.9726526 (0.07) -141.0778826 (0.1) -140.973 (0.07) -141.0778826
Proper motion (declination) [mas/yr] 210.1630661 (0.05) 210.0918155 (0.1) 210.163 (0.05) 210.0918155
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.40
V magnitude
R magnitude 16.60
I magnitude
J magnitude 16.38 (0.01) 16.29 (0.09) 16.29 16.29 (0.09)
H magnitude 16.08 (0.2) 16.08 (0.2) 16.08 16.08 (0.2)
K magnitude 16.98 (0.03) 16.98
u magnitude 18.25 (0.01) 18.28 18.25 (0.01) 18.26 (0.01)
g magnitude 17.53 17.50 (0.001) 17.53 (0.005)
r magnitude 17.22 17.24 (0.003) 17.24 (0.005)
i magnitude 17.12 17.14 (0.002) 17.12 (0.006)
z magnitude 17.12 17.14 (0.005) 17.14 (0.01)
G magnitude 17.22 (0.006) 17.23 17.22 17.22 (0.003) 17.23
BP magnitude 17.49 (0.006) 17.48 17.48
RP magnitude 16.80 (0.005) 16.81 16.81
Pan g magnitude 17.50 (0.001) 17.50 (0.001) 17.50 (0.001)
Pan r magnitude 17.24 (0.002) 17.24 (0.003) 17.23 (0.003)
Pan i magnitude 17.14 (0.002) 17.14 (0.002) 17.14 (0.002)
Pan z magnitude 17.14 (0.005) 17.14 (0.005) 17.14 (0.005)
Pan y magnitude 17.17 (0.02) 17.17 (0.01) 17.17 (0.01)
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.