G 159-31

All names: HE 0201-0513, WD 0201-052, NLTT 6876, Gaia DR3 2491046298280035584, Gaia EDR3 2491046298280035584, G 159-31, Gaia DR2 2491046298280035584, 2MASS J02033759-0459125, PB 9009, TIC 250410439, GALEX J020337.5-045912, USNO-B1.0 0850-00019764

Parameter Unit Gaia EDR3 Gaia DR2 Stilism Koester et al. 2009 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 02 03 37.73 (0.06) 02 03 37.73 (0.1) 02 03 37.73 02 03 37.56 (0.06) 02 03 37.70
Declination -04 59 15.79 (0.04) -04 59 15.70 (0.07) -04 59 15.79 -04 59 12.90 (0.04) -04 59 07.08
Spectral type DA DA DA2.0
Effective temperature [K] 24626.0 (102) 24916.0 (537)
log(g) [cgs] 7.64 (0.01) 7.72 (0.02)
Mass [M] 0.494 (0.01)
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 5.58 (0.06) 5.60 (0.1) 5.58 5.58 (0.06)
Distance [pc] 179.35 (2) 178.48 (3) 179.35 179.35 (2)
Composition
Proper motion (right ascension) [mas/yr] 159.7195737 (0.08) 159.7500773 (0.2) 159.72 (0.08)
Proper motion (declination) [mas/yr] -180.3779099 (0.05) -180.348286 (0.1) -180.378 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.94 15.90
V magnitude
R magnitude 16.40
I magnitude
J magnitude 16.79 (0.1)
H magnitude 16.91 (0.3)
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.21 (0.006) 16.23 16.21 16.21 (0.003)
BP magnitude 16.09 (0.006) 16.08
RP magnitude 16.45 (0.005) 16.44
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.012

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.