SDSS J083102.02+285741.9

All names: WD 0827+291, Gaia EDR3 707650734518498048, Gaia DR3 707650734518498048, SDSS J083102.02+285741.9, Gaia DR2 707650734518498048, SDSS J083102.00+285741.9, [HHD2009] SDSS J0831+2857

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 08 31 02.03 (0.6) 08 31 02.02 08 31 02.03 (0.8) 08 31 02.02 08 31 02.02 (0.6) 08 31 02.02 08 31 02.23 08 31 02.02
Declination 28 57 41.91 (0.4) 28 57 41.92 28 57 41.91 (0.4) 28 57 41.90 28 57 41.92 (0.4) 28 57 41.94 28 57 39.60 28 57 41.94
Spectral type DA+M DA+M DA+dM DA+M DA d DA+M
Effective temperature [K] 8314.0 12110.0 (2862) 9766.0 (155) 9666.0 (159)
log(g) [cgs] 7.92 7.38 (0.9) 8.43 (0.2) 8.26 (0.2)
Mass [M☉] 0.551 0.33 (0.5)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.8727
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] -1.70 (0.6) -3.59 (0.9)
Distance [pc] 869.00 (93)
Composition H
Proper motion (right ascension) [mas/yr] 15.47127706 (0.6) 14.18226222 (1) 15.471 (0.6) 2.5
Proper motion (declination) [mas/yr] -1.012504698 (0.5) 1.012977968 (0.9) -1.013 (0.5) -1.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.25 (0.04) 20.24 20.24 (0.04) 20.24 (0.05) 20.24 20.24 (0.05)
g magnitude 19.91 (0.02) 19.92 19.91 (0.02) 19.92 (0.03) 19.92 19.91 (0.03)
r magnitude 20.11 (0.02) 20.11 20.10 (0.02) 20.11 (0.03) 20.11 20.11 (0.03)
i magnitude 19.82 (0.03) 19.82 19.81 (0.03) 19.82 (0.03) 19.82 19.82 (0.03)
z magnitude 19.49 (0.06) 19.48 19.48 (0.06) 19.48 (0.06) 19.48 19.48 (0.06)
G magnitude 20.06 (0.08) 20.05 20.06 (0.01)
BP magnitude 19.95 (0.08) 20.06
RP magnitude 19.51 (0.06) 19.34
Pan g magnitude 19.95 (0.02)
Pan r magnitude 20.10 (0.01)
Pan i magnitude 19.86 (0.03)
Pan z magnitude 19.59 (0.02)
Pan y magnitude 19.40 (0.05)
E(B-V) 0.025

* 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.