BD-18 3019B

All names: NLTT 25280, Gaia EDR3 3554395813252626048, WD 1043-185, WDS J10457-1907B, J1045-1906, GJ 401 B, LP 791-55, CNS5 2638, WDJ104539.04-190645.03, CCDM J10457-1907B, BD-18 3019B, Gaia DR2 3554395813252626048, WD 1043-188, WD 1043-189, UCAC4 355-060158, Gaia DR3 3554395813252626048, ** LDS 4013B, LHS 290

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Blouin & Dufour 2019 Gaia DR2 Tremblay et al. 2017 Stilism Holberg et al. 2016 Sion et al. 2014 Giammichele et al. 2012 Holberg et al. 2008 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 10 45 36.93 (0.03) 10 45 37.00 (0.06) 10 45 38.88 10 45 36.93 10 45 39.04 (0.03) 10 45 37.00 10 45 38.30
Declination -19 06 54.69 (0.03) -19 06 54.39 (0.05) -19 06 50.40 -19 06 54.69 -19 06 45.03 (0.03) -19 06 54.39 -19 07 06.24
Spectral type DQpec DQ DQpec DQpec DQ DQ8.1 DQpec DQ DC DC: DQ DQ9
Effective temperature [K] 5736.0 (50) 5387.0 (17) 5832.0 (86) 5780.0 (90) 5788.0 (85) 5780.0 5780.0 (85) 6190.0 (200) 5216.0 (51)
log(g) [cgs] 7.88 (0.03) 7.59 (0.009) 7.86 (0.05) 7.93 (0.2) 7.93 (0.2) 8.09 (0.2) 7.75 (0.01)
Mass [M] 0.498 (0.02) 0.354 (0.006) 0.492 (0.03) 0.53 (0.1) 0.53 (0.1) 0.63 (0.1) 0.432 (0.009)
log(Luminosity) [L] -3.77 -3.74 (0.1)
Cooling age [Gyr] 2.2500 2.6200 2.6200 2.8500 (1)
log(H/He)
log(C/He) -7.2 -6.745 (0.05) -7.0
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] 53.19 (0.03) 53.19 (0.03) 53.13 (0.06) 53.13 (0.06) 53.13 (0.06) 52.59 (0.5) 56.90 (6) 56.90 (6) 56.90 (6) 56.90 (6) 53.19 53.19 (0.03) 53.13 (0.06) 78.40 (8)
Distance [pc] 18.80 (0.01) 18.80 (0.01) 18.82 (0.02) 18.82 (0.02) 18.82 (0.02) 19.02 (0.2) 17.57 (2) 12.15 17.60 (2) 17.57 17.57 (2) 18.80 18.80 (0.01) 18.82 (0.02) 12.76 (1)
Composition He He He He He He
Proper motion (right ascension) [mas/yr] -1867.280761 (0.05) -1867.353769 (0.1) -1867.281 (0.05) -1867.353769
Proper motion (declination) [mas/yr] -604.0672242 (0.03) -604.0260599 (0.07) -604.067 (0.03) -604.0260599
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS
B magnitude 16.09 16.09
V magnitude 15.52 (0.05) 15.51 15.52 15.52 15.50
R magnitude 15.03 15.03 15.75 (0.2)
I magnitude
J magnitude 14.62 (0.03) 14.62 14.62
H magnitude 14.41 (0.03) 14.41 14.41
K magnitude 14.36 (0.03) 14.36 14.36
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.44 (0.005) 15.46 15.44 15.44 (0.003) 15.46
BP magnitude 15.72 (0.005) 15.72 15.72
RP magnitude 14.92 (0.006) 14.93 14.93
Pan g magnitude 15.82 (0.007) 15.82 (0.007)
Pan r magnitude 15.38 (0.006) 15.38 (0.006)
Pan i magnitude 15.13 (0.06) 15.13 (0.06)
Pan z magnitude 15.18 (0.04) 15.18 (0.04)
Pan y magnitude 15.06 (0.005) 15.06 (0.005)
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.