SDSS J092309.41+215523.8

All names: USNO-B1.0 1119-00192798, SDSS J092309.40+215523.7, Gaia EDR3 638192214169969280, Gaia DR2 638192214169969280, Gaia DR3 638192214169969280, SDSS J092309.41+215523.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 23 09.37 (0.3) 09 23 09.41 09 23 09.37 (0.5) 09 23 09.37 09 23 09.43 (0.3) 09 23 09.41
Declination 21 55 22.77 (0.2) 21 55 23.77 21 55 22.81 (0.4) 21 55 22.77 21 55 24.15 (0.2) 21 55 23.81
Spectral type DC DC DC DC DC DC
Effective temperature [K] 7021.0 6810.0 6211.0 (338) 6330.0 (25)
log(g) [cgs] 8.37 8.29 8.21 (0.09) 10.00 (0.004)
Mass [M] 0.83 0.758 0.708 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 3.2380 3.0590
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 9.35 (0.4) 8.68 (0.5) 9.35 9.35 (0.4)
Distance [pc] 106.99 (4) 115.15 (7) 106.99 106.99 (4)
Composition
Proper motion (right ascension) [mas/yr] -53.47653377 (0.4) -53.76942733 (0.8) -53.477 (0.4)
Proper motion (declination) [mas/yr] -86.38861257 (0.3) -86.15236501 (0.7) -86.389 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.10
V magnitude
R magnitude 19.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.01 (0.04) 20.01 (0.04) 20.01 (0.04)
g magnitude 19.49 (0.01) 19.49 (0.01) 19.50 (0.02)
r magnitude 19.30 (0.01) 19.30 (0.01) 19.29 (0.02)
i magnitude 19.26 (0.02) 19.26 (0.02) 19.27 (0.02)
z magnitude 19.33 (0.05) 19.33 (0.05) 19.33 (0.05)
G magnitude 19.28 (0.04) 19.31 19.28 19.28 (0.004)
BP magnitude 19.51 (0.04) 19.45
RP magnitude 18.92 (0.04) 18.82
Pan g magnitude 19.47 (0.02)
Pan r magnitude 19.29 (0.009)
Pan i magnitude 19.26 (0.01)
Pan z magnitude 19.34 (0.02)
Pan y magnitude 19.27 (0.08)
E(B-V) 0.005

* 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.