Gaia DR2 2393834386459511680

All names: Gaia DR3 2393834386459511680, GD 1222, PSO J355.1832-18.3297, Gaia DR2 2393834386459511680, USNO-B1.0 0716-00902976, Gaia EDR3 2393834386459511680, J2340-1819, DENIS J234043.9-181945, WDJ234043.98-181945.62

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Jewett et al. 2024 Kilic et al. 2024 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 23 40 43.98 (0.1) 23 40 43.98 23 40 43.98 23 40 43.98 (0.1) 23 40 43.98
Declination -18 19 47.45 (0.1) -18 19 47.40 -18 19 47.45 -18 19 45.63 (0.1) -18 19 47.40
Spectral type DAQ DAQ DA DAQ
Effective temperature [K] 15836.0 (291) 15836.0 (291) 15819.0 15705.0 20342.0 (836)
log(g) [cgs] 8.95 8.95 (0.02) 8.87 8.89 9.08 (0.03)
Mass [M] 1.167 (0.01) 1.167 (0.01) 1.142 1.138 1.232 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.9700 (0.05) 0.9700 (0.05) 0.8139 0.8598
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 10.58 (0.2) 10.38 (0.2) 10.58 10.58 (0.2) 10.38 (0.2)
Distance [pc] 94.50 (1) 96.30 (2) 94.50 94.50 (1) 96.30 (2)
Composition C
Proper motion (right ascension) [mas/yr] -0.583771862 (0.1) -0.545047624 (0.3) -0.584 (0.1) -0.545047624
Proper motion (declination) [mas/yr] -114.1842465 (0.1) -114.4156672 (0.3) -114.184 (0.1) -114.4156672
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.30
V magnitude
R magnitude 17.90
I magnitude 17.88 (0.2)
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude 17.52 (0.009)
r magnitude 17.78 (0.006)
i magnitude 18.04 (0.003)
z magnitude 18.29 (0.004)
G magnitude 17.60 (0.008) 17.63 17.60 17.60 (0.003) 17.63
BP magnitude 17.54 (0.008) 17.51 17.51
RP magnitude 17.75 (0.01) 17.75 17.75
Pan g magnitude 17.52 (0.009)
Pan r magnitude 17.78 (0.006)
Pan i magnitude 18.04 (0.003)
Pan z magnitude 18.29 (0.004)
Pan y magnitude 18.45 (0.01)
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.