WD 1207-157

All names: USNO-B1.0 0739-00251918, WD1207-157, Gaia DR3 3569231970322760448, Gaia EDR3 3569231970322760448, EC 12075-1543, GALEX J121009.2-160039, WD 1207-157, Gaia DR2 3569231970322760448, 2MASS J12100924-1600392, TIC 347694389

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Koester et al. 2009 Koester et al. 2001 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 12 10 09.16 (0.05) 12 10 09.17 (0.08) 12 10 09.30 12 10 09.16 12 10 09.24 (0.05) 12 10 08.50
Declination -16 00 39.28 (0.04) -16 00 39.29 (0.06) -16 00 40.00 -16 00 39.28 -16 00 39.31 (0.04) -16 00 35.64
Spectral type DA DA DA DA DA2.9 DA3
Effective temperature [K] 16171.0 17490.0 (311) 16885.0 (48) 16968.0 (58) 16598.0 (297)
log(g) [cgs] 7.84 7.96 (0.06) 7.78 (0.01) 7.77 (0.01) 7.90 (0.02)
Mass [M] 0.527 0.6 (0.03) 0.5 0.562 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.1164
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] 8.65 (0.06) 8.45 (0.09) 8.65 8.65 (0.06)
Distance [pc] 115.67 (0.8) 118.37 (1) 118.00 115.67 115.67 (0.8)
Composition H H
Proper motion (right ascension) [mas/yr] -72.24143871 (0.06) -72.73747099 (0.2) -72.241 (0.06)
Proper motion (declination) [mas/yr] 1.836130973 (0.05) 1.778932834 (0.1) 1.836 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.30
V magnitude 16.32 16.32 16.32
R magnitude 16.20
I magnitude
J magnitude 16.65 (0.1)
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.31 (0.004) 16.33 16.31 16.31 (0.003)
BP magnitude 16.26 (0.004) 16.24
RP magnitude 16.45 (0.004) 16.44
Pan g magnitude 16.16 (0.005)
Pan r magnitude 16.47 (0.003)
Pan i magnitude 16.76 (0.003)
Pan z magnitude 17.01 (0.003)
Pan y magnitude 17.16 (0.009)
E(B-V) 0.008

* Constant surface field

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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.