All names: UCAC4 539-122231, GCRV 70442, EM* CDS 1133, uvby98 620020136, PLX 4778.00, Gaia DR2 1809844934461976832, 2MASS J20073649+1742147, PLX 4778, V*WZ Sge, 2E 2005.3+1733, FB 173, 1ES 2005+17.5, Gaia EDR3 1809844934461976832, 3XMM J200736.5+174213, TIC 86408822, NOVA Sge 1946, WEB 17643, UBV 17296, 1RXS J200736.4+174217, WDJ200736.50+174214.73, Lan 50, NOVA Sge 1913, WDJ200736.5+174214.73, EGGR 136, AAVSO 2003+17, SBC9 1204, NOVA Sge 1978, WD 2003+17, Gaia DR3 1809844934461976832, 2005+175, 2E 4322, CSI+17-20053 2, SV* HV 3518, V* WZ Sge
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Leggett et al. 2018 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 20 07 36.58 (0.02) | 20 07 36.58 | 20 07 36.58 | 20 07 36.50 (0.02) | 20 07 36.58 | ||||||
Declination | 17 42 14.34 (0.02) | 17 42 14.36 | 17 42 14.34 | 17 42 14.73 (0.02) | 17 42 14.36 | ||||||
Spectral type | DC: | D | |||||||||
Effective temperature | [K] | 9557.0 | 9680.0 | 9419.0 (86) | |||||||
log(g) | [cgs] | 7.68 | 7.64 | 7.54 (0.02) | |||||||
Mass | [M☉] | 0.432 | 0.391 | 0.35 (0.009) | |||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.4686 | 0.4423 | ||||||||
log(H/He) | |||||||||||
log(C/He) | |||||||||||
log(Ca/He) | |||||||||||
log(Ca/H) | |||||||||||
Parallax | [mas] | 22.10 (0.03) | 22.13 (0.2) | 22.16 (0.04) | 22.10 | 22.10 (0.03) | 22.16 (0.04) | ||||
Distance | [pc] | 45.24 (0.06) | 45.19 (0.4) | 45.13 (0.08) | 45.24 | 45.24 (0.06) | 45.13 (0.08) | ||||
Composition | |||||||||||
Proper motion (right ascension) | [mas/yr] | 71.50556974 (0.03) | 71.63532012 (0.06) | 71.506 (0.03) | 71.63532012 | ||||||
Proper motion (declination) | [mas/yr] | -24.3289588 (0.02) | -24.34813333 (0.04) | -24.329 (0.02) | -24.34813333 | ||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | 15.30 | ||||||||||
V magnitude | 15.20 | ||||||||||
R magnitude | 10.82 (0.9) | ||||||||||
I magnitude | |||||||||||
J magnitude | 14.86 (0.04) | ||||||||||
H magnitude | 14.56 (0.05) | ||||||||||
K magnitude | 14.00 (0.06) | ||||||||||
u magnitude | |||||||||||
g magnitude | |||||||||||
r magnitude | |||||||||||
i magnitude | |||||||||||
z magnitude | |||||||||||
G magnitude | 15.18 (0.009) | 15.21 | 15.18 | 15.18 (0.004) | 15.21 | ||||||
BP magnitude | 15.23 (0.009) | 15.21 | 15.21 | ||||||||
RP magnitude | 15.06 (0.01) | 15.06 | 15.06 | ||||||||
Pan g magnitude | 15.15 (0.02) | ||||||||||
Pan r magnitude | 15.22 (0.01) | ||||||||||
Pan i magnitude | 15.42 (0.03) | ||||||||||
Pan z magnitude | 15.59 (0.02) | ||||||||||
Pan y magnitude | 15.50 (0.01) | ||||||||||
E(B-V) | 0.003 |
* 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.