All names: G 180-57, J1628+3646, R 640, WDJ162825.00+364615.85, GJ 9564, LHS 3200, EGGR 119, PLX 3747.01, PSO J247.1023+36.7732, CSI+36-16267, Gaia EDR3 1331106782752978688, Gaia DR3 1331106782752978688, SDSS J162824.88+364618.2, LAWD 62, LTT 14906, 2MASS J16282502+3646153, Ross 640, UBV M 42660, uvby98 980180057, GJ 626.2, Ci 20 992, TIC 255908093, CNS5 4036, PM J16284+3646, USNO 751, NLTT 42899, LFT 1280, USNO 252, GCRV 66383, 16284+3646, WD 1626+368, WISEA J162824.57+364623.6, WD 1626+36, LSPM J1628+3646, KUV 433-1, KUV 16266+3653, USNO-B1.0 1267-00267574, UBV 13949, Gaia DR2 1331106782752978688
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Coutu et al. 2019 | Blouin et al. 2019 | Blouin et al. 2018 | Gaia DR2 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Holberg et al. 2008 | Dufour et al. 2007 | Bergeron et al. 2001 | Koester & Wolff 2000 | Sion et al. 1990 | Liebert et al. 1987 | Zeidler-K.T et al. 1986 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 28 24.34 (0.01) | 16 28 24.37 (0.02) | 16 28 25.00 | 16 28 24.37 (0.02) | 16 28 24.96 | 16 28 24.34 | 16 28 25.00 (0.01) | 16 28 24.37 | 16 28 26.78 | ||||||||||||||||||
| Declination | 36 46 27.79 (0.01) | 36 46 27.42 (0.02) | 36 46 15.85 | 36 46 27.42 (0.02) | 36 46 15.60 | 36 46 27.79 | 36 46 15.85 (0.01) | 36 46 27.42 | 36 45 50.76 | ||||||||||||||||||
| Spectral type | DZA | DZA | DZA | DZA | DZA | DZA | DZA | DZA | DZA | DZA6.0 | DZA | DZ | DZA | DA | DZA | DZAQ | DZ | DZ6 | DZA6 | ||||||||
| Effective temperature | [K] | 8346.0 (58) | 8964.0 (80) | 8177.0 (21) | 9114.7 (32) | 8316.0 (435) | 8070.0 (140) | 8070.0 (140) | 8493.0 (320) | 8020.0 (156) | 8507.0 | 8507.0 (320) | 8440.0 (320) | 8640.0 (280) | 8500.0 (200) | 8500.0 | 8800.0 | 8800.0 | 8230.0 (25) | ||||||||
| log(g) | [cgs] | 7.96 (0.008) | 8.22 (0.02) | 7.97 (0.004) | 8.12 (0.008) | 7.98 | 7.92 (0.008) | 7.92 (0.008) | 7.76 (0.05) | 7.98 (0.05) | (0.05) | 8.02 (0.05) | 8.03 (0.05) | 8.00 (0.1) | 8.00 | 7.93 (0.004) | |||||||||||
| Mass | [M☉] | 0.551 (0.007) | 0.72 (0.01) | 0.559 (0.003) | 0.5674 | 0.532 (0.005) | 0.58 (0.03) | 0.56 (0.03) | 0.58 (0.03) | 0.59 (0.03) | 0.6 (0.03) | 0.534 (0.004) | |||||||||||||||
| log(Luminosity) | [L☉] | -3.22 | -3.13 | -3.12 (0.03) | |||||||||||||||||||||||
| Cooling age | [Gyr] | 1.0600 | 0.9870 | 1.0110 (0.05) | 1.0200 | 1.0200 | 1.0200 (0.07) | ||||||||||||||||||||
| log(H/He) | -4.0 | -3.0 | -3.6576 (0.03) | -3.5 | -3.5 (0.2) | -3.7 | -3.63 (0.05) | -3.3 (0.3) | -3.1 | -3.5 | |||||||||||||||||
| log(C/He) | <-9.0 | -6.0 | |||||||||||||||||||||||||
| log(Ca/He) | -9.4 | -8.86 | -9.0694 (0.08) | -9.12 | -9.12 (0.05) | -8.98 | -8.83 (0.04) | -8.65 (0.5) | -9.1 | -9.1 | |||||||||||||||||
| log(Ca/H) | |||||||||||||||||||||||||||
| log(N/He) | |||||||||||||||||||||||||||
| log(O/He) | |||||||||||||||||||||||||||
| log(Na/He) | |||||||||||||||||||||||||||
| log(Mg/He) | -7.4 (0.1) | -7.25 (0.7) | -6.7 | -7.2 | |||||||||||||||||||||||
| log(Al/He) | <-8.25 | ||||||||||||||||||||||||||
| log(Si/He) | -7.9 (0.2) | -7.5 (0.5) | -7.3 | ||||||||||||||||||||||||
| 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) | -8.44 (0.1) | -8.3 (-0.1) | -8.7 | -8.3 | |||||||||||||||||||||||
| log(Co/He) | |||||||||||||||||||||||||||
| log(Ni/He) | |||||||||||||||||||||||||||
| log(Cu/He) | |||||||||||||||||||||||||||
| log(Zn/He) | |||||||||||||||||||||||||||
| log(Ga/He) | |||||||||||||||||||||||||||
| log(Ge/He) | |||||||||||||||||||||||||||
| log(Sr/He) | |||||||||||||||||||||||||||
| Parallax | [mas] | 62.91 (0.01) | 62.91 (0.01) | 62.91 (0.02) | 62.91 (0.02) | 62.91 | 62.91 (0.02) | 62.91 (0.02) | 62.91 (0.02) | 62.70 (2) | 62.70 (2) | 62.70 (2) | 62.70 (2) | 62.70 (2) | 62.91 | 62.91 (0.01) | 62.91 (0.02) | 64.00 (4) | |||||||||
| Distance | [pc] | 15.90 (0.004) | 15.90 (0.003) | 15.90 (0.005) | 15.89 (0.006) | 15.89 (0.006) | 15.89 (0.006) | 15.89 (0.006) | 15.89 (0.006) | 15.95 (0.5) | 15.90 (0.5) | 15.94 | 15.90 (0.5) | 15.95 | 15.95 (0.5) | 15.90 | 15.90 (0.004) | 15.89 (0.006) | 15.62 (0.9) | ||||||||
| Composition | He | He | He | He | He | He | He | He | He | He | He | ||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -494.2303311 (0.01) | -494.1851863 (0.03) | -494.23 (0.01) | -494.1851863 | ||||||||||||||||||||||
| Proper motion (declination) | [mas/yr] | 746.697792 (0.02) | 746.553641 (0.04) | 746.698 (0.02) | 746.553641 | ||||||||||||||||||||||
| Variability | |||||||||||||||||||||||||||
| Magnetic | |||||||||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||||||||
| Binarity | |||||||||||||||||||||||||||
| B magnitude | 14.02 (0.03) | 14.02 | 14.02 | 14.01 | |||||||||||||||||||||||
| V magnitude | 13.83 (0.03) | 13.83 | 13.83 | 13.83 | |||||||||||||||||||||||
| R magnitude | 13.75 (0.03) | 13.75 | 13.75 | 13.90 | |||||||||||||||||||||||
| I magnitude | 13.66 (0.03) | 13.66 | 13.66 | ||||||||||||||||||||||||
| J magnitude | 13.66 (0.003) | 13.64 (0.02) | 13.58 (0.03) | 13.58 | 13.58 | 13.64 (0.02) | |||||||||||||||||||||
| H magnitude | 13.65 (0.03) | 13.65 (0.03) | 13.57 (0.03) | 13.57 | 13.57 | 13.65 (0.03) | |||||||||||||||||||||
| K magnitude | 13.57 (0.04) | 13.57 (0.04) | 13.58 (0.03) | 13.58 | 13.58 | 13.57 (0.04) | |||||||||||||||||||||
| u magnitude | 14.22 (0.005) | 14.22 (0.005) | 14.22 (0.005) | ||||||||||||||||||||||||
| g magnitude | 14.03 (0.002) | 14.03 (0.002) | |||||||||||||||||||||||||
| r magnitude | 13.91 (0.004) | 14.04 (0.005) | |||||||||||||||||||||||||
| i magnitude | 14.00 (0.004) | 14.21 (0.002) | |||||||||||||||||||||||||
| z magnitude | 14.16 (0.005) | 14.16 (0.005) | |||||||||||||||||||||||||
| G magnitude | 13.78 (0.0007) | 13.80 | 13.80 | 13.78 | 13.78 (0.003) | 13.80 | |||||||||||||||||||||
| BP magnitude | 13.85 (0.0007) | 13.83 | 13.83 | ||||||||||||||||||||||||
| RP magnitude | 13.66 (0.0006) | 13.67 | 13.67 | ||||||||||||||||||||||||
| Pan g magnitude | 13.85 (0.01) | 13.85 (0.01) | 13.85 (0.01) | ||||||||||||||||||||||||
| Pan r magnitude | 13.91 (0.005) | 13.91 (0.005) | 13.91 (0.005) | ||||||||||||||||||||||||
| Pan i magnitude | 14.00 (0.004) | 14.00 (0.004) | 14.00 (0.004) | ||||||||||||||||||||||||
| Pan z magnitude | 14.13 (0.01) | 14.13 (0.01) | 14.13 (0.01) | ||||||||||||||||||||||||
| Pan y magnitude | 14.25 (0.002) | 14.25 (0.006) | 14.25 (0.006) | ||||||||||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||||||||||
* 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.