HS 2220+2146A

All names: UCAC4 561-138949, PSO J222301.743+220124.615, SDSS J222301.62+220131.3, J2223+2201, HS 2220+2146A, ** SLN 44A, PM J22230+2201N, 22230+2201S, 2MASS J22230160+2201318, Gaia DR2 1874954641491354624, WDJ222301.71+220125.28, WD 2220+217.1, Gaia DR2 1874954645786146304, USNO-B1.0 1120-00619684, WD 2220+217, WDS J22230+2202A

Parameter Unit Kilic et al. 2020 MWDD H Pan-STARRS DR1 Gaia DR2 Limoges et al. 2015 Koester et al. 2009 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 22 23 01.76 (0.06) 22 23 01.60 (0.05) 22 23 01.76 22 23 01.63
Declination 22 01 24.32 (0.07) 22 01 31.69 (0.05) 22 01 24.32 22 01 23.52
Spectral type DA DA DA DA DA3.5
Effective temperature [K] 13028.0 (88) 13295.0 17730.0 (336) 14601.0 (32)
log(g) [cgs] 8.22 (0.006) 8.24 8.46 (0.06) 8.08 (0.01)
Mass [M] 0.745 (0.006) 0.755 0.91 (0.04)
log(Luminosity) [L] -2.12
Cooling age [Gyr] 0.4020
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] 14.25 (0.07) 14.06 (0.06) 14.25 (0.07)
Distance [pc] 70.17 (0.4) 74.70 (2) 71.11 (0.3) 70.17 (0.4)
Composition H H
Proper motion (right ascension) [mas/yr] 51.14080638 (0.1) 54.0 51.985 (0.1) 51.14080638
Proper motion (declination) [mas/yr] -62.34896919 (0.1) -62.0 -61.558 (0.1) -62.34896919
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.00 14.70
V magnitude
R magnitude 15.95 (0.1)
I magnitude
J magnitude 16.42 16.05 (0.1)
H magnitude 15.71
K magnitude 16.10
u magnitude 16.36 15.66 (0.01) 16.36 (0.006)
g magnitude 15.99 15.60 (0.02) 16.00 (0.004)
r magnitude 16.20 15.91 (0.009) 16.21 (0.005)
i magnitude 16.45 16.21 (0.01) 16.46 (0.005)
z magnitude 16.69 16.48 (0.02) 16.70 (0.01)
G magnitude 16.14 15.79 (0.0008) 16.14
BP magnitude 16.10 16.10
RP magnitude 16.18 16.18
Pan g magnitude 16.00 (0.002)
Pan r magnitude 16.24 (0.005)
Pan i magnitude 16.48 (0.003)
Pan z magnitude 16.70 (0.004)
Pan y magnitude 16.85 (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.