All names: NLTT 41399, EGGR 273, GEN# +6.10060194, GSC 01499-01571, PM J15524+1810, Gaia DR3 1202826348825240832, SDSS J155226.32+181019.1, WD 1550+18, TIC 422975717, 15524+1810, FB 163, L 1273-18, LSPM J1552+1810, SDSS J155226.33+181019.2, LTT 14705, WD 1550+183, GALEX J155226.3+181020, Gaia EDR3 1202826348825240832, PG 1550+183, GD 194, Gaia DR2 1202826348825240832, 2MASS J15522636+1810185, USNO-B1.0 1081-00278473, WDJ155226.38+181018.69, KUV 15502+1819, LP 443-69, J1552+1810
| 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.