[SGR2010] J0238+2844

All names: WD 0235+285, SDSS J023818.61+284413.9, Gaia DR3 128025965708583296, [SGR2010] J0238+2844, Gaia DR2 128025965708583296, Gaia EDR3 128025965708583296

Parameter Unit Gaia EDR3 SDSS DR12 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 02 38 18.66 (0.4) 02 38 18.61 02 38 18.66 (0.5) 02 38 18.61 02 38 18.59 (0.4) 02 38 18.82 02 38 18.61
Declination 28 44 13.90 (0.3) 28 44 13.97 28 44 13.90 (0.5) 28 44 13.92 28 44 14.14 (0.3) 28 44 08.52 28 44 13.92
Spectral type DA+M DA+M DA+M2 DA4.5+M2 DA+M
Effective temperature [K] 10985.0 11302.0 (325) 22805.0 (774)
log(g) [cgs] 8.22 7.97 (0.2) 5.20 (0.1)
Mass [M] 0.739 0.59 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.6539
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 2.71 (0.6) 3.17 (0.7) 2.71 (0.6)
Distance [pc] 368.38 (76) 315.20 (72) 368.38 (76)
Composition H
Proper motion (right ascension) [mas/yr] 58.62976593 (0.5) 55.39777798 (1) 58.63 (0.5)
Proper motion (declination) [mas/yr] -15.17210141 (0.5) -13.08743215 (0.9) -15.172 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS yes WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.20 (0.05) 20.17 20.18 (0.06) 20.18 20.17 (0.06)
g magnitude 19.60 (0.01) 19.68 19.69 (0.01) 19.69 19.68 (0.2)
r magnitude 19.82 (0.02) 19.81 19.83 (0.02) 19.83 19.81 (0.9)
i magnitude 24.36 (1) 19.57 19.55 (0.03) 19.55 19.57 (2)
z magnitude 20.28 (0.2) 22.81 22.80 (0.9) 22.80 22.81 (0.8)
G magnitude 19.52 (0.1) 19.52 19.52 (0.006)
BP magnitude 19.06 (0.1) 19.31
RP magnitude 18.71 (0.1) 18.60
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.106

* 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.