All names: LSPM J1552+1810, GALEX J155226.3+181020, J1552+1810, SDSS J155226.33+181019.2, PG 1550+183, GD 194, EGGR 273, WDJ155226.38+181018.69, LTT 14705, Gaia DR3 1202826348825240832, PM J15524+1810, LP 443-69, WD 1550+183, GSC 01499-01571, 15524+1810, GEN# +6.10060194, FB 163, NLTT 41399, USNO-B1.0 1081-00278473, TIC 422975717, WD 1550+18, Gaia DR2 1202826348825240832, Gaia EDR3 1202826348825240832, KUV 15502+1819, 2MASS J15522636+1810185, SDSS J155226.32+181019.1, L 1273-18
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | McCleery et al. 2020 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Koester et al. 2009 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 15 52 26.20 (0.02) | 15 52 26.21 (0.04) | 15 52 26.21 (0.04) | 15 52 26.20 | 15 52 26.38 (0.02) | 15 52 26.21 | 15 52 27.14 | |||||||||||
Declination | 18 10 20.56 (0.02) | 18 10 20.50 (0.03) | 18 10 20.50 (0.03) | 18 10 20.56 | 18 10 18.69 (0.02) | 18 10 20.50 | 18 10 12.36 | |||||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA3.4 | DA4 | ||||||||
Effective temperature | [K] | 14734.0 (138) | 14813.0 (217) | 14703.9 (98) | 14734.0 (138) | 14086.0 | 14810.0 (295) | 14910.0 (305) | 14860.0 (72) | 14260.0 (271) | 14919.0 (116) | |||||||
log(g) | [cgs] | 8.41 (0.006) | 8.41 (0.02) | 8.41 (0.009) | 8.41 (0.006) | 8.37 | 8.37 (0.05) | 8.36 (0.04) | 8.25 (0.007) | 8.25 (0.05) | 8.42 (0.006) | |||||||
Mass | [M☉] | 0.869 (0.006) | 0.866 (0.01) | 0.868 (0.006) | 0.843 | 0.84 (0.03) | 0.84 (0.03) | 0.77 (0.03) | 0.875 (0.005) | |||||||||
log(Luminosity) | [L☉] | -2.37 | -2.36 | |||||||||||||||
Cooling age | [Gyr] | 0.4263 | 0.3890 | |||||||||||||||
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] | 27.12 (0.03) | 27.12 (0.03) | 27.13 (0.05) | 27.13 (0.05) | 27.12 | 27.12 (0.03) | 27.13 (0.05) | ||||||||||
Distance | [pc] | 36.87 (0.04) | 36.87 (0.04) | 36.86 (0.07) | 36.86 (0.07) | 40.50 (2) | 41.00 | 41.00 | 36.87 | 36.87 (0.04) | 36.86 (0.07) | |||||||
Composition | H | H | H | H | H | |||||||||||||
Proper motion (right ascension) | [mas/yr] | -154.7808395 (0.03) | -154.7735449 (0.07) | -154.781 (0.03) | -154.7735449 | |||||||||||||
Proper motion (declination) | [mas/yr] | 116.7280373 (0.03) | 116.6693594 (0.06) | 116.728 (0.03) | 116.6693594 | |||||||||||||
Variability | NOV | |||||||||||||||||
Magnetic | ||||||||||||||||||
Bd | [MG] | |||||||||||||||||
Infrared excess (disk) | ||||||||||||||||||
Binarity | ||||||||||||||||||
B magnitude | 14.94 | |||||||||||||||||
V magnitude | 14.83 | 14.79 | ||||||||||||||||
R magnitude | 15.20 | |||||||||||||||||
I magnitude | ||||||||||||||||||
J magnitude | 15.17 (0.05) | |||||||||||||||||
H magnitude | 15.31 (0.1) | |||||||||||||||||
K magnitude | 15.28 (0.1) | |||||||||||||||||
u magnitude | 15.22 (0.006) | 15.22 (0.006) | ||||||||||||||||
g magnitude | 15.04 (0.004) | 15.04 (0.004) | ||||||||||||||||
r magnitude | 16.64 (0.01) | 16.64 (0.01) | ||||||||||||||||
i magnitude | 15.36 (0.005) | 15.36 (0.005) | ||||||||||||||||
z magnitude | 15.38 (0.006) | 15.38 (0.006) | ||||||||||||||||
G magnitude | 14.82 (0.001) | 14.84 | 14.84 | 14.82 | 14.82 (0.003) | 14.84 | ||||||||||||
BP magnitude | 14.79 (0.001) | 14.78 | 14.78 | |||||||||||||||
RP magnitude | 14.91 (0.001) | 14.91 | 14.91 | |||||||||||||||
Pan g magnitude | 14.73 (0.005) | |||||||||||||||||
Pan r magnitude | 14.96 (0.001) | |||||||||||||||||
Pan i magnitude | 15.22 (0.003) | |||||||||||||||||
Pan z magnitude | 15.45 (0.004) | |||||||||||||||||
Pan y magnitude | 15.60 (0.005) | |||||||||||||||||
E(B-V) | 0.002 |
* Constant surface field
Spectra without link are available upon request
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.