SDSS J094917.04-000023.6

All names: USNO-A2.0 0825-07003996, SDSS J094917.05-000023.6, USNO-B1.0 0899-00184296, Gaia DR2 3834020410677227904, SDSS J094917.06-000023.7, EQ J0949-0000, Gaia DR3 3834020410677227904, SDSS J094917.04-000023.6, Gaia EDR3 3834020410677227904, GALEX J094917.0-000023, WD 0946+002, SDSS J094917.05-000023.7, LAMOST J094917.05-000023.6, SDSS J094917.06-000023.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Guo et al. 2015 Tremblay et al. 2011 Mukadam et al. 2004 Harris et al. 2003 Simbad White Dwarf Research Corporation Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 09 49 17.04 (0.2) 09 49 17.05 09 49 17.04 (0.5) 09 49 17.05 (0.2) 09 49 17.05 09 49 16.82 09 49 17.06 09 49 17.06
Declination -00 00 24.48 (0.2) -00 00 23.66 -00 00 24.46 (0.3) -00 00 23.73 (0.2) -00 00 23.70 -00 00 24.48 -00 00 23.67 -00 00 23.69
Spectral type DA DA DA DA5 DA5 DAV DA DA4.5 DA DA
Effective temperature [K] 10854.0 11430.0 (250) 11130.0 11180.0 11178.0 (134) 11220.0 (160) 11190.0 (132)
log(g) [cgs] 7.91 8.36 (0.1) 8.21 8.22 8.22 (0.1) 8.15 (0.1) 8.27 (0.1)
Mass [M] 0.551 0.83 (0.07) 0.688 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.4344 0.7586
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] 3.73 (0.3) 3.91 (0.9) 3.73 (0.3)
Distance [pc] 268.00 (19) 255.60 (56) 268.00 (19)
Composition H H
Proper motion (right ascension) [mas/yr] -7.817115649 (0.3) -7.161633839 (0.7) -7.817 (0.3) -7.0 -9.0
Proper motion (declination) [mas/yr] -47.03277893 (0.2) -47.54565887 (0.8) -47.033 (0.2) -47.8 -47.0
Variability VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.40
V magnitude 18.80 18.80
R magnitude 19.10
I magnitude
J magnitude 18.90 (0.1)
H magnitude 18.80 (0.2)
K magnitude
u magnitude 19.26 (0.02) 19.25 19.26 (0.02) 19.28 (0.03) 19.25 19.27 (0.03) 19.25 (0.03)
g magnitude 18.79 (0.008) 18.80 18.79 (0.008) 18.80 (0.01) 18.80 18.79 (0.01) 18.80 (0.01)
r magnitude 18.93 (0.01) 18.93 18.93 (0.01) 18.93 (0.02) 18.93 18.92 (0.02) 18.93 (0.01)
i magnitude 19.10 (0.01) 19.10 19.11 (0.01) 19.10 (0.02) 19.10 19.11 (0.02) 19.10 (0.02)
z magnitude 19.31 (0.06) 19.29 19.31 (0.06) 19.29 (0.05) 19.29 19.29 (0.05) 19.29 (0.05)
G magnitude 18.83 (0.02) 18.85 18.83 (0.004)
BP magnitude 18.89 (0.02) 18.81
RP magnitude 18.80 (0.06) 18.80
Pan g magnitude 18.78 (0.01)
Pan r magnitude 18.94 (0.01)
Pan i magnitude 19.11 (0.01)
Pan z magnitude 19.32 (0.009)
Pan y magnitude 19.21 (0.06)
E(B-V) 0.022
Period #1 [s] 213.3
Amplitude #1 [mma] 6
Period #2 [s] 363.2
Amplitude #2 [mma] 12.5
Period #3 [s] 364.0
Amplitude #3 [mma] 7.3
Period #4 [s] 365.2
Amplitude #4 [mma] 17.7
Period #5 [s] 516.6
Amplitude #5 [mma] 16.2
Period #6 [s] 634.2
Amplitude #6 [mma] 5.1
Period #7 [s] 711.6
Amplitude #7 [mma] 6.0

* 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.