All names: uvby98 980180065, L 1491-27, NLTT 43310, TIC 57103541, LTT 14945, G 18-65, G 180-65, KUV 16376+3331, Gaia DR2 1326398777041821568, USNO-B1.0 1234-00264812, Gaia EDR3 1326398777041821568, WD 1637+33, G180-65, FBS 1637+335, UBV 14107, J1639+3325, KUV 433-4, PM J16394+3325, 2MASS J16392782+3325229, UCAC2 43454735, SDSS J163927.82+332520.8, Gaia DR3 1326398777041821568, G 181-2, FBS B 577, LHS 6310, LSPM J1639+3325, CSI+33-16376, WD 1637+335, PG 1637+335, PLX 3788.01, WDJ163927.82+332522.24, 16394+3325, UBV M 42661, SDSS J163927.81+332520.8, LP 275-78, GALEX J163927.7+332519, USNO 253, EGGR 120
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Liebert et al. 2005 | Zuckerman et al. 2003 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 39 27.80 (0.01) | 16 39 27.80 (0.02) | 16 39 27.80 (0.02) | 16 39 27.80 | 16 39 27.82 (0.01) | 16 39 27.80 | 16 39 27.36 | ||||||||||||||
Declination | 33 25 14.78 (0.01) | 33 25 15.01 (0.02) | 33 25 15.01 (0.02) | 33 25 14.78 | 33 25 22.24 (0.01) | 33 25 15.01 | 33 25 29.28 | ||||||||||||||
Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA4.9 | DA | |||||||
Effective temperature | [K] | 9900.0 (38) | 9989.0 (85) | 9919.0 (30) | 10063.7 (29) | 9816.0 (18) | 9878.0 | 10151.0 (147) | 10180.0 (146) | 10360.0 (149) | 10150.0 (149) | 9940.0 | 9940.0 (280) | 9957.0 (35) | |||||||
log(g) | [cgs] | 8.00 (0.005) | 8.01 (0.02) | 8.01 (0.005) | 8.03 (0.007) | 7.98 (0.003) | 8.00 | 8.05 (0.05) | 8.03 (0.05) | 8.27 (0.05) | 8.17 (0.06) | 8.13 | 8.13 (0.1) | 8.01 (0.006) | |||||||
Mass | [M☉] | 0.601 (0.005) | 0.608 (0.01) | 0.603 (0.004) | 0.59 (0.002) | 0.6 | 0.57 (0.1) | 0.62 (0.03) | 0.77 (0.03) | 0.71 (0.04) | 0.68 (0.08) | 0.606 (0.005) | |||||||||
log(Luminosity) | [L☉] | -2.81 | -2.90 | -2.91 (0.08) | |||||||||||||||||
Cooling age | [Gyr] | 0.6500 | 0.6230 | 0.8318 | 0.7400 (0.1) | ||||||||||||||||
log(H/He) | |||||||||||||||||||||
log(C/He) | |||||||||||||||||||||
log(Ca/He) | |||||||||||||||||||||
log(Ca/H) | <-10.679 | ||||||||||||||||||||
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] | 32.79 (0.02) | 32.79 (0.02) | 32.82 (0.03) | 32.82 (0.03) | 32.82 (0.03) | 35.00 (3) | 35.00 (3) | 32.79 | 32.79 (0.02) | 32.82 (0.03) | 32.00 (4) | |||||||||
Distance | [pc] | 30.50 (0.02) | 30.50 (0.02) | 30.47 (0.03) | 30.47 (0.02) | 30.47 (0.02) | 29.20 (3) | 28.60 (3) | 27.00 | 28.00 | 28.57 (3) | 30.50 | 30.50 (0.02) | 30.47 (0.02) | 31.25 (4) | ||||||
Composition | H | H | H | H | H | H | H | ||||||||||||||
Proper motion (right ascension) | [mas/yr] | -20.73407586 (0.02) | -20.82975574 (0.04) | -20.734 (0.02) | -20.82975574 | ||||||||||||||||
Proper motion (declination) | [mas/yr] | -466.5889669 (0.02) | -466.6197541 (0.05) | -466.589 (0.02) | -466.6197541 | ||||||||||||||||
Variability | NOV | ||||||||||||||||||||
Magnetic | |||||||||||||||||||||
Bd | [MG] | ||||||||||||||||||||
Infrared excess (disk) | |||||||||||||||||||||
Binarity | |||||||||||||||||||||
B magnitude | 14.83 | 14.83 | |||||||||||||||||||
V magnitude | 14.65 | 14.65 | |||||||||||||||||||
R magnitude | 14.59 | 14.60 | |||||||||||||||||||
I magnitude | 14.51 | ||||||||||||||||||||
J magnitude | 14.55 (0.004) | 14.56 | 14.55 (0.03) | ||||||||||||||||||
H magnitude | 14.47 (0.04) | 14.50 | 14.47 (0.05) | ||||||||||||||||||
K magnitude | 14.42 (0.08) | 14.54 | 14.42 (0.08) | ||||||||||||||||||
u magnitude | 15.04 (0.005) | 15.04 (0.005) | 15.04 (0.005) | 14.99 | |||||||||||||||||
g magnitude | 14.61 (0.004) | 14.61 (0.004) | 14.61 | ||||||||||||||||||
r magnitude | 14.69 (0.004) | 14.69 (0.004) | 14.69 | ||||||||||||||||||
i magnitude | 14.81 (0.005) | 14.81 (0.005) | 14.81 | ||||||||||||||||||
z magnitude | 15.00 (0.005) | 15.00 (0.005) | 15.01 | ||||||||||||||||||
G magnitude | 14.62 (0.001) | 14.63 | 14.63 | 14.62 | 14.62 (0.003) | 14.63 | |||||||||||||||
BP magnitude | 14.67 (0.001) | 14.67 | 14.67 | ||||||||||||||||||
RP magnitude | 14.53 (0.001) | 14.54 | 14.54 | ||||||||||||||||||
Pan g magnitude | 14.64 (0.001) | 14.63 (0.003) | |||||||||||||||||||
Pan r magnitude | 14.71 (0.001) | 14.72 (0.002) | |||||||||||||||||||
Pan i magnitude | 14.84 (0.001) | 14.84 (0.001) | |||||||||||||||||||
Pan z magnitude | 15.01 (0.001) | 15.02 (0.006) | |||||||||||||||||||
Pan y magnitude | 15.10 (0.02) | 15.12 (0.004) | |||||||||||||||||||
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.