Gaia DR2 1929838143078434432

All names: Gaia EDR3 1929838143078434432, J2305+3922, USNO-B1.0 1293-00521186, WDJ230550.09+392232.88, Gaia DR3 1929838143078434432, Gaia DR2 1929838143078434432, WDJ230550.09+392232.87, LSPM J2305+3922

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Bergeron et al. 2022 McCleery et al. 2020 Tremblay et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 23 05 49.95 (0.08) 23 05 49.95 (0.09) 23 05 49.95 23 05 49.95 23 05 50.09 (0.08) 23 05 49.95
Declination 39 22 25.27 (0.08) 39 22 25.50 (0.08) 39 22 25.50 39 22 25.27 39 22 32.88 (0.08) 39 22 25.50
Spectral type DC DC DC DC DC DC DC
Effective temperature [K] 4553.0 (32) 4550.0 (33) 6549.7 (125) 6550.0 (120) 8290.0 7863.0 6188.0 (2608)
log(g) [cgs] 8.22 (0.007) 8.88 (0.04) 8.88 (0.04) 9.31 9.22 8.99 (0.1)
Mass [M] 0.707 (0.005) 0.698 (0.004) 1.303 1.27 1.184 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 8.0000 7.5560 2.5220 2.5520
log(H/He) -2.71 -2.73
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] 27.86 (0.1) 27.86 (0.1) 28.08 (0.1) 28.08 (0.1) 28.08 (0.1) 27.86 27.86 (0.1) 28.08 (0.1)
Distance [pc] 35.90 (0.1) 35.89 (0.1) 35.61 (0.2) 35.62 (0.2) 35.62 (0.2) 35.90 35.90 (0.1) 35.62 (0.2)
Composition He He
Proper motion (right ascension) [mas/yr] -106.7611469 (0.1) -106.6567705 (0.2) -106.761 (0.1) -106.6567705
Proper motion (declination) [mas/yr] -475.8732219 (0.1) -475.6443362 (0.2) -475.873 (0.1) -475.6443362
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.00
V magnitude
R magnitude 17.80
I magnitude
J magnitude 18.27 (0.06)
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.91 (0.02) 17.94 17.94 17.91 17.91 (0.003) 17.94
BP magnitude 18.15 (0.02) 18.18 18.18
RP magnitude 17.61 (0.01) 17.59 17.59
Pan g magnitude 18.21 (0.007) 18.21 (0.006)
Pan r magnitude 17.77 (0.005) 17.77 (0.004)
Pan i magnitude 17.88 (0.006) 17.88 (0.007)
Pan z magnitude 18.25 (0.01) 18.25 (0.01)
Pan y magnitude 18.45 (0.04) 18.45 (0.03)
E(B-V) 0.002

* 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.