All names: 2MASS J16544568+3829371, USNO-B1.0 1284-00283111, NLTT 43806, GALEX J165445.7+382935, Gaia DR3 1351956512512484480, SDSS J165445.69+382936.2, WDJ165445.69+382936.63, Gaia EDR3 1351956512512484480, SDSS J165445.70+382936.6, TIC 72808759, LP 276-33, PM J16547+3829, 16547+3829, J1654+3829, WD 1653+385, LSPM J1654+3829, SDSS J165445.69+382936.5, Gaia DR2 1351956512512484480, PSO J253.6904+38.4924
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Hardy et al. 2023a | Caron et al. 2023 | Blouin & Xu 2022 | Kilic et al. 2020 | McCleery et al. 2020 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Ferrario et al. 2015 | Limoges et al. 2015 | Giammichele et al. 2012 | Zuckerman et al. 2011 | Holberg et al. 2008 | Kawka et Vennes 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 54 45.71 (0.04) | 16 54 45.71 (0.04) | 16 54 45.71 (0.04) | 16 54 45.71 | 16 54 45.69 (0.04) | 16 54 45.71 | 16 54 44.76 | ||||||||||||||||||
| Declination | 38 29 31.40 (0.04) | 38 29 31.56 (0.05) | 38 29 31.56 (0.05) | 38 29 31.40 | 38 29 36.63 (0.04) | 38 29 31.56 | 38 29 51.00 | ||||||||||||||||||
| Spectral type | DAZ | DAZH | DA | DAZ | DAZ | DAZH | DAZ | DAZ | DAZ | DAZ | DAZ | DAZ | DAZ | DA | DZA | DAZ8.8 | |||||||||
| Effective temperature | [K] | 5841.0 (20) | 5808.0 (51) | 5774.1 (40) | 5907.0 (14) | 5792.0 (29) | 5838.0 (18) | 5749.4 (29) | 5800.0 (35) | 5846.0 | 5579.0 | 5900.0 | 5940.0 (101) | 5833.0 (126) | 5900.0 | 5700.0 (240) | 5839.0 (26) | ||||||||
| log(g) | [cgs] | 8.19 (0.006) | 8.17 (0.03) | 8.24 (0.1) | 8.20 (0.005) | 8.18 (0.01) | 8.19 (0.006) | 8.15 (0.02) | 8.17 (0.02) | 8.19 | 8.03 | 8.00 (0) | (0) | 8.00 (0) | 8.28 (0.5) | 8.18 (0.009) | |||||||||
| Mass | [M☉] | 0.706 (0.006) | 0.695 (0.02) | 0.7366678298945843 (0.2) | 0.701 (0.004) | 0.698 (0.009) | 0.704 (0.006) | 0.695 (0.01) | 0.706 | 0.588 | 0.59 (0.1) | 0.59 (0) | 0.76 (0.3) | 0.702 (0.008) | |||||||||||
| log(Luminosity) | [L☉] | -3.74 | -3.77 | ||||||||||||||||||||||
| Cooling age | [Gyr] | 4.4000 | 4.0700 | 3.8650 (0.2) | 3.8980 | 3.9620 | 2.4300 | ||||||||||||||||||
| log(H/He) | |||||||||||||||||||||||||
| log(C/He) | |||||||||||||||||||||||||
| log(Ca/He) | |||||||||||||||||||||||||
| log(Ca/H) | -8.0 | -7.88 (0.07) | -7.9 (0.2) | ||||||||||||||||||||||
| log(C/H) | |||||||||||||||||||||||||
| log(N/H) | |||||||||||||||||||||||||
| log(O/H) | |||||||||||||||||||||||||
| log(Na/H) | -8.1 (0.1) | ||||||||||||||||||||||||
| log(Mg/H) | -7.1 (0.1) | ||||||||||||||||||||||||
| log(Al/H) | -7.6 (0.2) | ||||||||||||||||||||||||
| log(Si/H) | -7.2 (0.1) | ||||||||||||||||||||||||
| log(P/H) | |||||||||||||||||||||||||
| log(S/H) | |||||||||||||||||||||||||
| log(Sc/H) | |||||||||||||||||||||||||
| log(Ti/H) | -9.55 (0.1) | ||||||||||||||||||||||||
| log(Cr/H) | -9.55 (0.2) | ||||||||||||||||||||||||
| log(Mn/H) | |||||||||||||||||||||||||
| log(Fe/H) | -7.8 (0.2) | ||||||||||||||||||||||||
| log(Ni/H) | -9.1 (0.2) | ||||||||||||||||||||||||
| Parallax | [mas] | 36.64 (0.04) | 36.64 (0.04) | 36.58 (0.05) | 36.64 (0.04) | 36.58 (0.05) | 36.58 (0.05) | 36.58 (0.05) | 36.64 | 36.64 (0.04) | 36.58 (0.05) | ||||||||||||||
| Distance | [pc] | 27.30 (0.03) | 27.29 (0.03) | 27.34 (0.04) | 27.30 (0.03) | 27.34 (0.04) | 27.34 (0.04) | 27.34 (0.04) | 32.30 (0.9) | 30.70 (1) | 15.35 | 15.00 | 27.30 | 27.30 (0.03) | 27.34 (0.04) | ||||||||||
| Composition | H | H | H | H | H | H | H | H | |||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 13.96077973 (0.05) | 14.09748105 (0.09) | 13.961 (0.05) | 14.09748105 | ||||||||||||||||||||
| Proper motion (declination) | [mas/yr] | -326.8239931 (0.05) | -326.6592833 (0.1) | -326.824 (0.05) | -326.6592833 | ||||||||||||||||||||
| Variability | |||||||||||||||||||||||||
| Magnetic | yes | yes | |||||||||||||||||||||||
| Bd | [MG] | 0.07 * | 0.07 * | ||||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||||||
| Binarity | |||||||||||||||||||||||||
| B magnitude | 17.10 | ||||||||||||||||||||||||
| V magnitude | 15.86 | ||||||||||||||||||||||||
| R magnitude | 16.50 | ||||||||||||||||||||||||
| I magnitude | |||||||||||||||||||||||||
| J magnitude | 15.59 (0.007) | 15.53 (0.06) | 15.53 | 15.53 (0.06) | |||||||||||||||||||||
| H magnitude | 15.35 (0.1) | 15.35 (0.1) | 15.35 | 15.35 (0.1) | |||||||||||||||||||||
| K magnitude | 15.27 (0.1) | 15.27 (0.1) | 15.27 | 15.27 (0.1) | |||||||||||||||||||||
| u magnitude | 17.97 (0.01) | 17.99 (0.01) | 17.98 (0.01) | 0.99 | |||||||||||||||||||||
| g magnitude | 16.99 | 16.93 (0.005) | 16.99 (0.005) | ||||||||||||||||||||||
| r magnitude | 16.58 | 16.59 (0.004) | 16.57 (0.005) | ||||||||||||||||||||||
| i magnitude | 16.41 | 16.43 (0.002) | 16.41 (0.005) | ||||||||||||||||||||||
| z magnitude | 16.38 | 16.40 (0.004) | 16.38 (0.008) | ||||||||||||||||||||||
| G magnitude | 16.58 (0.007) | 16.60 | 16.60 | 16.58 | 16.58 (0.003) | 16.60 | |||||||||||||||||||
| BP magnitude | 16.91 (0.007) | 16.92 | 16.92 | ||||||||||||||||||||||
| RP magnitude | 16.09 (0.005) | 16.09 | 16.09 | ||||||||||||||||||||||
| Pan g magnitude | 16.93 (0.004) | 16.93 (0.005) | 16.94 (0.004) | 16.94 (0.004) | |||||||||||||||||||||
| Pan r magnitude | 16.59 (0.003) | 16.59 (0.004) | 16.59 (0.009) | 16.59 (0.009) | |||||||||||||||||||||
| Pan i magnitude | 16.43 (0.002) | 16.43 (0.002) | 16.44 (0.004) | 16.44 (0.004) | |||||||||||||||||||||
| Pan z magnitude | 16.40 (0.003) | 16.40 (0.004) | 16.40 (0.004) | 16.40 (0.004) | |||||||||||||||||||||
| Pan y magnitude | 16.42 (0.008) | 16.42 (0.007) | 16.41 (0.007) | 16.41 (0.007) | |||||||||||||||||||||
| 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.