SDSS J044556.05-000419.2

All names: [VV2010] J044556.0-000418, [HSO2006] SDSS J0445-0004A, SDSS J044556.05-000419.2, SDSS J044556.06-000419.40, [VV2006] J044556.0-000418, Gaia DR3 3229970751264892416, USNO-B1.0 0899-00047323, SDSS J044556.06-000419.4, Gaia EDR3 3229970751264892416, Gaia DR2 3229970751264892416

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Bedard et al. 2020 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 04 45 56.06 (0.4) 04 45 56.05 04 45 56.06 (0.7) 04 45 56.06 (0.4)
Declination -00 04 19.38 (0.3) -00 04 19.27 -00 04 19.38 (0.5) -00 04 19.30 (0.3)
Spectral type DO DB DB DB DB
Effective temperature [K] 45506.0 (941) 45732.0 41759.0 25309.0 32398.0 (1000)
log(g) [cgs] 7.86 (0.3) 7.69 8.85 8.42 7.87 (0.05)
Mass [M] 0.57 (0.2) 0.504 1.127 0.866 0.551 (0.02)
log(Luminosity) [L] -0.07 (0.2)
Cooling age [Gyr] 0.0029 (0.0009) 0.0781
log(H/He) -2
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 1.46 (0.5) 1.68 (0.8) 1.46 (0.5)
Distance [pc] 683.68 (248) 593.50 (274) 683.67 (248)
Composition He He
Proper motion (right ascension) [mas/yr] 6.344589119 (0.6) 6.434742889 (2) 6.345 (0.6)
Proper motion (declination) [mas/yr] -5.032999626 (0.5) -6.126396097 (1) -5.033 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 20.10
V magnitude 19.89
R magnitude 19.90
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.58 (0.03) 19.58 (0.03) 19.58 (0.03)
g magnitude 19.92 (0.01) 19.92 (0.01) 19.92 (0.01)
r magnitude 20.30 (0.02) 20.30 (0.02) 20.30 (0.02)
i magnitude 20.61 (0.04) 20.61 (0.04) 20.61 (0.04)
z magnitude 20.84 (0.2) 20.84 (0.2) 20.84 (0.2)
G magnitude 20.14 (0.05) 20.19 20.14 (0.006)
BP magnitude 20.08 (0.05) 19.98
RP magnitude 19.92 (0.09) 20.58
Pan g magnitude 19.98 (0.02)
Pan r magnitude 20.39 (0.02)
Pan i magnitude 20.62 (0.04)
Pan z magnitude 20.80 (0.1)
Pan y magnitude
E(B-V) 0.037

* 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.