Gaia DR2 1860918379134755584

All names: SDSS J202814.85+300632.3, Gaia DR2 1860918379134755584, Gaia DR3 1860918379134755584, LSPM J2028+3006, USNO-B1.0 1201-00498423, Gaia EDR3 1860918379134755584, WDJ202814.77+300631.92

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 20 28 15.00 (0.06) 20 28 14.99 20 28 15.00 20 28 14.77 (0.06) 20 28 14.99
Declination 30 06 33.01 (0.09) 30 06 32.98 30 06 33.01 30 06 31.92 (0.09) 30 06 32.98
Spectral type DA DA
Effective temperature [K] 6670.0 6421.0 6823.0 (87)
log(g) [cgs] 7.99 7.87 8.02 (0.03)
Mass [M] 0.587 0.496 0.604 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.6960 1.6460
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 11.86 (0.1) 11.97 (0.1) 11.86 11.86 (0.1) 11.97 (0.1)
Distance [pc] 84.33 (0.8) 83.52 (1) 84.33 84.33 (0.8) 83.52 (1)
Composition
Proper motion (right ascension) [mas/yr] 187.8542732 (0.08) 187.7196027 (0.2) 187.854 (0.09) 187.7196027
Proper motion (declination) [mas/yr] 68.08708194 (0.1) 68.26539372 (0.2) 68.087 (0.1) 68.26539372
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.40
V magnitude
R magnitude 18.00
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.05 (0.03) 19.03 (0.02)
g magnitude 18.47 (0.008) 18.44 (0.007)
r magnitude 18.20 (0.01) 18.20 (0.007)
i magnitude 18.11 (0.02) 18.11 (0.009)
z magnitude 18.12 (0.02) 18.14 (0.02)
G magnitude 18.19 (0.009) 18.21 18.19 18.19 (0.003) 18.21
BP magnitude 18.42 (0.009) 18.42 18.42
RP magnitude 17.84 (0.008) 17.85 17.85
Pan g magnitude 18.43 (0.006)
Pan r magnitude 18.23 (0.009)
Pan i magnitude 18.17 (0.004)
Pan z magnitude 18.21 (0.01)
Pan y magnitude 18.21 (0.02)
E(B-V) 0.010

* 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.