Gaia DR2 1722236328978172928

All names: Gaia DR2 1722236328978172928, J1515+8230, LSPM J1515+8230, Gaia EDR3 1722236328978172928, WDJ151534.80+823028.99, Gaia DR3 1722236328978172928, LP 8-181, USNO-B1.0 1725-00041445, WDJ151534.8+823028.98, NLTT 39993

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Tremblay et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 15 15 33.54 (0.1) 15 15 33.58 (0.2) 15 15 33.58 15 15 33.54 15 15 34.80 (0.1) 15 15 33.58
Declination 82 30 31.52 (0.1) 82 30 31.44 (0.2) 82 30 31.44 82 30 31.52 82 30 28.98 (0.1) 82 30 31.44
Spectral type DZH DZH DZH DZH DC: DZH
Effective temperature [K] 4481.0 (141) 4532.0 (26) 4361.5 (76) 4360.0 (80) 4518.0 4213.0 4483.0 (56)
log(g) [cgs] 7.88 (0.1) 7.91 (0.02) 7.80 (0.06) 7.80 (0.06) 7.91 7.66 7.90 (0.03)
Mass [M] 0.508 (0.06) 0.512 (0.01) 0.524 0.384 0.517 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 6.0700 6.6130 4.6330
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -8.5
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] 26.13 (0.1) 26.13 (0.1) 26.09 (0.1) 26.09 (0.1) 26.09 (0.1) 26.13 26.13 (0.1) 26.09 (0.1)
Distance [pc] 38.27 (0.2) 38.27 (0.2) 38.33 (0.2) 38.32 (0.2) 38.32 (0.2) 38.27 38.27 (0.2) 38.32 (0.2)
Composition H He
Proper motion (right ascension) [mas/yr] -153.7797385 (0.2) -154.0412479 (0.3) -153.78 (0.2) -154.0412479
Proper motion (declination) [mas/yr] 158.689653 (0.2) 158.2855194 (0.3) 158.69 (0.2) 158.2855194
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.40
V magnitude
R magnitude 17.60
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.16 (0.04) 18.19 18.19 18.16 18.16 (0.003) 18.19
BP magnitude 18.79 (0.04) 18.75 18.75
RP magnitude 17.44 (0.02) 17.43 17.43
Pan g magnitude 18.90 (0.01) 18.90 (0.01)
Pan r magnitude 18.12 (0.009) 18.12 (0.009)
Pan i magnitude 17.75 (0.01) 17.75 (0.01)
Pan z magnitude 17.67 (0.02) 17.67 (0.02)
Pan y magnitude 17.57 (0.009) 17.57 (0.01)
E(B-V) 0.003

* 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.