SDSS J073938.21+212730.5

All names: Gaia DR3 673245576873069312, Gaia EDR3 673245576873069312, Gaia DR2 673245572577865984, SDSS J073938.21+212730.50, SDSS J073938.21+212730.5

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Bedard et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 07 39 38.22 (0.3) 07 39 38.22 07 39 38.22 (0.4) 07 39 38.22 (0.3)
Declination 21 27 30.58 (0.2) 21 27 30.59 21 27 30.58 (0.3) 21 27 30.60 (0.2)
Spectral type DOZ DO:/sdO DO:/sdO DO:/sdO DC DO:
Effective temperature [K] 117073.0 (8014) 23259.0 28435.0 47446.0 (161)
log(g) [cgs] 7.80 (0.8) 7.53 7.68 6.50 (0.5)
Mass [M] 0.69 (0.3) 0.416 0.458
log(Luminosity) [L] 1.70 (0.6)
Cooling age [Gyr] 0.0001 (0.0001) 0.0212 0.0125
log(H/He)
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] 0.67 (0.3) 1.21 (0.5) 0.67 (0.3)
Distance [pc] 1492.28 (647) 824.24 (306) 1492.31 (647)
Composition He
Proper motion (right ascension) [mas/yr] -1.520710016 (0.3) -1.422710502 (0.8) -1.521 (0.3)
Proper motion (declination) [mas/yr] -1.403055146 (0.3) -0.886879955 (0.7) -1.403 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.70 (0.02) 18.70 (0.02) 18.70 (0.02)
g magnitude 19.07 (0.01) 19.07 (0.01) 19.07 (0.01)
r magnitude 19.65 (0.02) 19.65 (0.02) 19.65 (0.02)
i magnitude 19.94 (0.03) 19.94 (0.03) 19.94 (0.03)
z magnitude 20.35 (0.1) 20.35 (0.1) 20.35 (0.1)
G magnitude 19.37 (0.05) 19.41 19.37 (0.005)
BP magnitude 19.25 (0.05) 18.92
RP magnitude 19.74 (0.1) 19.57
Pan g magnitude 19.19 (0.01)
Pan r magnitude 19.59 (0.01)
Pan i magnitude 19.94 (0.02)
Pan z magnitude 20.13 (0.08)
Pan y magnitude 20.22 (0.1)
E(B-V) 0.041

* 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.