PG 1520+447

All names: SDSS J152217.16+443255.5, WD 1520+447, PG 1520+447, PSO J152217.168+443255.636, Gaia DR2 1394391614030665472, SDSS J152217.16+443255.54

Parameter Unit Pan-STARRS DR1 Gaia DR2 Kepler et al. 2015 SDSS DR10 Simbad
Right ascension 15 22 17.16 (0.05) 15 22 17.17 15 22 17.17
Declination 44 32 55.54 (0.06) 44 32 55.50 44 32 55.62
Spectral type DA DA2.8
Effective temperature [K] 17850.0 (54)
log(g) [cgs] 8.14 (0.01)
Mass [M☉] 0.6940000000000001 (0.006)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 5.59 (0.06)
Distance [pc] 178.98 (2)
Composition
Proper motion (right ascension) [mas/yr] -11.2080487902 (0.1) -10.0
Proper motion (declination) [mas/yr] 6.2527299581 (0.1) 8.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.56
V magnitude 16.58
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.71 (0.02) 16.70 (0.007) 16.70
g magnitude 16.44 (0.01) 16.45 (0.004) 16.45
r magnitude 16.75 (0.02) 16.76 (0.004) 16.76
i magnitude 17.04 (0.02) 17.06 (0.005) 17.06
z magnitude 17.31 (0.02) 17.32 (0.02) 17.32
G magnitude 16.66
BP magnitude 16.57
RP magnitude 16.76
Pan g magnitude 16.51 (0.005)
Pan r magnitude 16.79 (0.005)
Pan i magnitude 17.07 (0.005)
Pan z magnitude 17.33 (0.008)
Pan y magnitude 17.48 (0.01)

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.