HS 2229+2335

All names: UCAC4 570-126959, 2MASS J22314544+2351235, TIC 411370782, Gaia DR2 1875647956587976576, Gaia EDR3 1875647956587976576, Gaia DR3 1875647956587976576, HS2229+2335, HS 2229+2335, WD 2229+235, USNO-B1.0 1138-00550817, GALEX J223145.5+235124

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Bedard et al. 2017 Tremblay et al. 2017 Stilism Koester et al. 2014 Farihi et al. 2010 Koester et al. 2009 Kilic et al. 2006 Koester et al. 2005 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 22 31 45.57 (0.04) 22 31 45.57 (0.05) 22 31 45.57 22 31 45.47 (0.04) 22 31 45.60
Declination 23 51 23.29 (0.04) 23 51 23.30 (0.06) 23 51 23.29 23 51 23.36 (0.04) 23 51 20.88
Spectral type DA DA DA DAZ DAZ DA DA DAZ DA
Effective temperature [K] 16992.0 19952.0 (360) 20000.0 (500) 18820.0 (255) 18600.0 19300.0 (38) 18600.0 18600.0 18174.0 (303)
log(g) [cgs] 7.91 8.05 (0.06) 7.96 (0.09) 8.02 (0.09) 7.90 (0.007) 7.90 7.90 7.99 (0.02)
Mass [M] 0.567 0.67 (0.2) 0.633 (0.05) 0.57 0.611 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.1102 0.0900
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -5.9 -6.3 -6.3
log(C/H) -6.7 (0.2)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H) -6.5 (0.1)
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] 9.48 (0.06) 9.49 (0.08) 9.02 (0.6) 9.48 9.48 (0.06)
Distance [pc] 105.48 (0.6) 105.42 (0.8) 110.90 (10) 110.86 (8) 105.48 105.48 (0.6)
Composition H H H H
Proper motion (right ascension) [mas/yr] 90.73359266 (0.07) 90.65800144 (0.1) 90.734 (0.07)
Proper motion (declination) [mas/yr] -3.815547879 (0.05) -4.157338549 (0.1) -3.816 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.60 16.02 (0.06)
V magnitude 16.01 (0.09) 16.01 (0.07) 15.90 16.01 (0.07)
R magnitude 16.37 (0.3)
I magnitude
J magnitude 16.16 (0.09)
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.06 (0.003) 16.08 15.99 (0.004) 16.06 16.06 (0.003)
BP magnitude 16.00 (0.003) 15.98
RP magnitude 16.22 (0.004) 16.22
Pan g magnitude 15.92 (0.006)
Pan r magnitude 16.24 (0.008)
Pan i magnitude 16.53 (0.001)
Pan z magnitude 16.78 (0.003)
Pan y magnitude 16.95 (0.007)
E(B-V) 0.018

* 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.