V* EM UMa

All names: TIC 1001114023, PG 1351+489, V* EM UMa, Gaia DR2 1510467090935595008, WISE J135309.99+484021.1, Gaia DR3 1510467090935595008, USNO-B1.0 1386-00235385, TIC 471015205, WISEA J135309.96+484020.9, Gaia EDR3 1510467090935595008, WD 1351+489, SDSS J135309.97+484021.1, SDSS J135309.98+484021.0, SDSS J135310.01+484020.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Bergeron et al. 2011 Beauchamp et al. 1999 Vincent et al. 2024 Simbad White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999) Vincent et al. 2023
Right ascension 13 53 10.02 (0.04) 13 53 09.98 13 53 10.02 (0.05) 13 53 10.02 13 53 09.97 (0.04) 13 53 09.89
Declination 48 40 20.65 (0.04) 48 40 21.09 48 40 20.66 (0.05) 48 40 20.65 48 40 21.17 (0.04) 48 40 21.72
Spectral type DB DB DB DB DB2 DBV DBV DB
Effective temperature [K] 26373.0 28434.0 (124) 26010.0 (1536) 26100.0 25208.0 (1021) 22600.0
log(g) [cgs] 8.05 7.89 (0.02) 7.91 (0.07) 7.89 8.01 (0.02)
Mass [M] 0.636 0.56 (0.04) 0.614 (0.01)
log(Luminosity) [L] -1.11
Cooling age [Gyr] 0.0193 0.0186
log(H/He) <-3.1 <-4.37 (0.8)
log(C/He)
log(Ca/He) <-4.0
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] 5.70 (0.05) 5.67 (0.07) 5.70 5.70 (0.05)
Distance [pc] 175.49 (2) 176.33 (2) 207.00 166.00 175.49 175.49 (2)
Composition He He He
Proper motion (right ascension) [mas/yr] 30.92305477 (0.05) 30.78265131 (0.09) 30.923 (0.05)
Proper motion (declination) [mas/yr] -32.83439688 (0.05) -33.01979273 (0.09) -32.834 (0.05)
Variability VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.50 16.38
V magnitude 16.38
R magnitude 17.00
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.37 (0.006) 16.37 (0.006) 16.37
g magnitude 16.50 (0.004) 16.50 (0.004) 16.51
r magnitude 16.87 (0.004) 16.87 (0.004) 16.87
i magnitude 17.19 (0.006) 17.19 (0.006) 17.20
z magnitude 17.47 (0.01) 17.47 (0.01) 17.49
G magnitude 16.68 (0.004) 16.71 16.68 16.68 (0.003)
BP magnitude 16.59 (0.004) 16.53
RP magnitude 16.88 (0.006) 16.87
Pan g magnitude 16.51 (0.02)
Pan r magnitude 16.91 (0.007)
Pan i magnitude 17.21 (0.01)
Pan z magnitude 17.47 (0.02)
Pan y magnitude 17.65 (0.01)
E(B-V) 0.014

* 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.