LP 448-24

All names: USNO-B1.0 1070-00334311, 17430+1701, TIC 43874986, Gaia EDR3 4549622027311531904, SDSS J174300.74+170145.6, Gaia DR3 4549622027311531904, NLTT 45332, LSPM J1743+1701, 2MASS J17430078+1701463, PSO J265.7522+17.0284, Gaia DR2 4549622027311531904, J1743+1701, SDSS J174300.74+170145.7, PM J17430+1701, LP 448-24, WDJ174300.75+170145.74

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Blouin et al. 2019 MWDD H MWDD HE Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 17 43 00.47 (0.07) 17 43 00.48 (0.1) 17 43 00.48 (0.1) 17 43 00.47 17 43 00.75 (0.07) 17 43 00.48
Declination 17 01 41.21 (0.07) 17 01 41.35 (0.1) 17 01 41.35 (0.1) 17 01 41.21 17 01 45.74 (0.07) 17 01 41.35
Spectral type DC DC DC DC DC DC DC DC DC: DC
Effective temperature [K] 4377.0 (26) 4416.0 (63) 4339.0 (26) 4266.1 (64) 4315.0 (30) 4352.0 4072.0 4720.0 (433) 4425.0 (41)
log(g) [cgs] 7.98 (0.01) 8.00 (0.05) 7.95 (0.01) 7.90 (0.06) 7.94 (0.03) 7.96 7.70 8.00 (0) 8.01 (0.02)
Mass [M] 0.565 (0.01) 0.577 (0.03) 0.548 (0.01) 0.54 (0.01) 0.554 0.405 0.58 (0.1) 0.581 (0.02)
log(Luminosity) [L] -4.15
Cooling age [Gyr] 7.9400 7.5620 (0.3) 7.6810 5.3920
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] 29.92 (0.1) 29.92 (0.1) 29.91 (0.1) 29.91 (0.1) 29.91 (0.1) 29.91 (0.1) 29.92 29.92 (0.1) 29.91 (0.1)
Distance [pc] 33.42 (0.1) 33.42 (0.1) 33.43 (0.2) 33.43 (0.2) 33.43 (0.2) 33.43 (0.2) 32.10 (6) 33.42 33.42 (0.1) 33.43 (0.2)
Composition H H H H
Proper motion (right ascension) [mas/yr] -247.3785039 (0.1) -247.473567 (0.2) -248.0 -247.379 (0.1) -247.473567
Proper motion (declination) [mas/yr] -282.7761617 (0.1) -283.0782967 (0.3) -266.0 -282.776 (0.1) -283.0782967
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.80
V magnitude
R magnitude 17.60
I magnitude
J magnitude 16.34 (0.1) 16.34 (0.1) 16.34 16.34 (0.1)
H magnitude 15.70 (0.03) 15.70
K magnitude 15.78 (0.2) 15.78 (0.2) 15.78 15.78 (0.2)
u magnitude 21.27 (0.08) 21.27 (0.08) 21.27 (0.08)
g magnitude 19.08 (0.009) 19.08 (0.009)
r magnitude 18.04 (0.003) 18.05 (0.007)
i magnitude 17.68 (0.004) 17.73 (0.007)
z magnitude 17.54 (0.01) 17.59 (0.01)
G magnitude 18.07 (0.01) 18.09 18.09 18.07 18.07 (0.003) 18.09
BP magnitude 18.67 (0.01) 18.72 18.72
RP magnitude 17.33 (0.006) 17.33 17.33
Pan g magnitude 18.90 (0.01) 18.90 (0.01) 18.90 (0.01)
Pan r magnitude 18.04 (0.003) 18.04 (0.003) 18.04 (0.003)
Pan i magnitude 17.68 (0.004) 17.68 (0.004) 17.68 (0.004)
Pan z magnitude 17.53 (0.009) 17.54 (0.01) 17.54 (0.01)
Pan y magnitude 17.47 (0.02) 17.47 (0.02) 17.47 (0.02)
E(B-V) 0.002

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.