All names: PM J19001+7039, J1900+7039, 2MASS J19001024+7039512, Gaia DR2 2262849634963004416, GJ 742, PLX 4440, GEN# +9.80260015, TIC 229797408, CSI+70-19007, 19001+7039, LSPM J1900+7039, GW+70 8247, Gaia EDR3 2262849634963004416, AC +70 8247, NLTT 47348, USNO-B1.0 1606-00125381, WDJ190010.25+703951.42, WISEA J190010.44+703956.7, uvby98 980260015, USNO 350, AC +70 8247-0, LFT 1446, [SPB96] 1935, UBV 16196, PLX 4440.00, WD 1900+706, G 260-15, WD 1900+70, LHS 3424, LTT 15585, LAWD 73, EGGR 129, WD 1900+705
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Jewett et al. 2024 | O'Brien et al. 2024 | McCleery et al. 2020 | MWDD H | Gaia DR2 | Stilism | Holberg et al. 2016 | Ferrario et al. 2015 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Holberg et al. 2008 | Bergeron et al. 2001 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 19 00 10.53 (0.01) | 19 00 10.52 (0.03) | 19 00 10.52 (0.03) | 19 00 10.08 | 19 00 10.25 (0.03) | 19 00 10.52 | 19 00 10.42 | ||||||||||||
Declination | 70 39 59.50 (0.02) | 70 39 59.25 (0.03) | 70 39 59.25 (0.03) | 70 39 50.40 | 70 39 51.42 (0.03) | 70 39 59.25 | 70 39 33.12 | ||||||||||||
Spectral type | DAP | DAH | DAP | DAP | DAP | DA | DAP | DAP4.2 | DAP | DAP | DC | DAP4.5 | DXP5 | ||||||
Effective temperature | [K] | 11615.0 (100) | 12540.0 (143) | 12144.4 (83) | 11617.0 | 11517.0 (460) | 16000.0 | 11880.0 (744) | 11835.0 | 11835.0 (460) | 12070.0 (990) | ||||||||
log(g) | [cgs] | 8.60 | 8.67 (0.01) | 8.64 (0.009) | 8.61 | 8.46 (0.05) | 8.54 (0.04) | 8.53 (0.04) | 8.58 (0.03) | ||||||||||
Mass | [M☉] | 0.988 (0.006) | 1.029 (0.008) | 0.988 | 0.9 (0.03) | 0.95 (0.02) | 0.93 (0.02) | 0.93 (0.02) | 0.95 (0.02) | ||||||||||
log(Luminosity) | [L☉] | -2.88 | -2.88 | -2.88 (0.03) | |||||||||||||||
Cooling age | [Gyr] | 1.1800 (0.04) | 1.1380 | 0.8600 | 0.9100 | 0.9400 (0.09) | |||||||||||||
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] | 77.67 (0.02) | 77.67 (0.02) | 77.65 (0.03) | 77.65 (0.03) | 77.00 (2) | 77.00 (2) | 77.00 (2) | 77.00 (2) | 77.00 (2) | 77.65 (0.03) | 77.65 (0.03) | 74.00 | ||||||
Distance | [pc] | 12.88 (0.003) | 12.87 (0.003) | 12.88 (0.005) | 12.88 (0.005) | 12.99 (0.4) | 13.00 (2) | 12.98 | 13.00 (0.4) | 12.99 | 12.99 (0.4) | 12.88 (0.005) | 12.88 (0.005) | 13.51 | |||||
Composition | H | H | H | H | He | He | H? | He | |||||||||||
Proper motion (right ascension) | [mas/yr] | 85.81000045 (0.02) | 85.77392217 (0.05) | 85.774 (0.05) | 85.77392217 | ||||||||||||||
Proper motion (declination) | [mas/yr] | 505.1496152 (0.02) | 505.0499376 (0.07) | 505.05 (0.07) | 505.0499376 | ||||||||||||||
Variability | |||||||||||||||||||
Magnetic | yes | yes | yes | yes | yes | ||||||||||||||
Bd | [MG] | 100 | 320 (20) | ||||||||||||||||
Infrared excess (disk) | |||||||||||||||||||
Binarity | |||||||||||||||||||
B magnitude | 13.31 | 13.31 | 13.24 | ||||||||||||||||
V magnitude | 13.23 | 13.25 | 13.25 | ||||||||||||||||
R magnitude | 13.24 | 13.24 | 13.50 | ||||||||||||||||
I magnitude | 13.23 | 13.23 | |||||||||||||||||
J magnitude | 13.33 | 13.33 (0.02) | |||||||||||||||||
H magnitude | 13.44 | 13.44 (0.03) | |||||||||||||||||
K magnitude | 13.42 | 13.42 (0.05) | |||||||||||||||||
u magnitude | |||||||||||||||||||
g magnitude | |||||||||||||||||||
r magnitude | |||||||||||||||||||
i magnitude | |||||||||||||||||||
z magnitude | |||||||||||||||||||
G magnitude | 13.25 (0.001) | 13.26 | 13.26 | 13.26 (0.0004) | 13.26 | ||||||||||||||
BP magnitude | 13.23 (0.001) | 13.20 | 13.20 | ||||||||||||||||
RP magnitude | 13.25 (0.0008) | 13.25 | 13.25 | ||||||||||||||||
Pan g magnitude | 13.22 (0.006) | ||||||||||||||||||
Pan r magnitude | 13.36 (0.003) | ||||||||||||||||||
Pan i magnitude | 13.64 (0.0003) | ||||||||||||||||||
Pan z magnitude | 13.79 (0.006) | ||||||||||||||||||
Pan y magnitude | 13.86 (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.