WD 2228+151

All names: J2230+1523, 2MASS J22305560+1523534, PM J22309+1523, WD 2228+151, PSO J337.7334+15.3989, TIC 51807871, USNO-B1.0 1053-00641018, LHS 3821, LP 520-28, Gaia DR3 2736054627915080448, NLTT 54047, SDSS J223055.78+152354.6, SDSS J223055.77+152354.6, Gaia DR2 2736054627915080448, Gaia EDR3 2736054627915080448, WDJ223055.62+152353.66, LSPM J2230+1523E, 22309+1523

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 Kilic et al. 2020 McCleery et al. 2020 Blouin et al. 2019 MWDD H Gaia DR2 Stilism Limoges et al. 2015 Kawka et Vennes 2006 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 22 30 56.16 (0.1) 22 30 56.14 (0.2) 22 30 56.14 (0.2) 22 30 56.16 22 30 55.62 (0.1) 22 30 56.14 22 30 55.78
Declination 15 23 56.88 (0.1) 15 23 56.78 (0.2) 15 23 56.78 (0.2) 15 23 56.88 15 23 53.66 (0.1) 15 23 56.78 15 23 49.56
Spectral type DA DA DA DA DA DA DA DA DA DA DA DA9.0
Effective temperature [K] 5290.0 (10) 5378.0 (111) 5308.0 (9) 5292.0 (10) 5192.6 (97) 5350.0 (30) 5383.0 4820.0 (478) 5580.0 (260) 5397.0 (56)
log(g) [cgs] 8.10 (0.006) 8.15 (0.07) 8.14 (0.008) 8.12 (0.008) 8.07 (0.07) 8.16 (0.02) 8.17 8.00 (0) 8.68 (0.6) 8.17 (0.02)
Mass [M] 0.646 (0.006) 0.68 (0.05) 0.67 (0.007) 0.659 (0.008) 0.682 (0.01) 0.691 0.58 (0.1) 1.02 (0.4) 0.688 (0.02)
log(Luminosity) [L] -4.11
Cooling age [Gyr] 5.7100 5.5840 (0.3) 5.5310
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] 25.95 (0.1) 25.95 (0.1) 26.31 (0.2) 26.31 (0.2) 26.31 (0.2) 26.31 (0.2) 25.95 25.95 (0.1) 26.31 (0.2)
Distance [pc] 38.53 (0.2) 38.54 (0.2) 38.01 (0.3) 38.00 (0.3) 38.01 (0.3) 38.00 (0.3) 32.80 (8) 27.00 38.53 38.53 (0.2) 38.00 (0.3)
Composition H H H H H H
Proper motion (right ascension) [mas/yr] 492.7449876 (0.1) 492.492928 (0.2) 492.745 (0.1) 492.492928
Proper motion (declination) [mas/yr] 201.1912669 (0.1) 201.2771036 (0.2) 201.191 (0.1) 201.2771036
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.16
V magnitude
R magnitude 17.30
I magnitude
J magnitude 16.51 (0.02) 16.34 (0.1) 16.34 (0.1)
H magnitude 16.27 (0.2) 16.01 (0.1) 16.01 (0.1)
K magnitude 15.86 (0.2)
u magnitude 19.61 (0.03) 19.61 (0.03) 19.61 (0.03)
g magnitude 18.11 (0.003) 18.23 (0.006)
r magnitude 17.61 (0.003) 17.63 (0.006)
i magnitude 17.44 (0.0009) 17.41 (0.006)
z magnitude 17.36 (0.005) 17.30 (0.01)
G magnitude 17.67 (0.02) 17.68 17.68 17.67 17.67 (0.003) 17.68
BP magnitude 18.08 (0.02) 18.11 18.11
RP magnitude 17.11 (0.01) 17.09 17.09
Pan g magnitude 18.15 (0.007) 18.11 (0.003) 18.11 (0.003)
Pan r magnitude 17.63 (0.006) 17.61 (0.003) 17.61 (0.003)
Pan i magnitude 17.44 (0.003) 17.44 (0.0009) 17.44 (0.001)
Pan z magnitude 17.38 (0.007) 17.36 (0.005) 17.36 (0.005)
Pan y magnitude 17.33 (0.008) 17.36 (0.02) 17.36 (0.02)
E(B-V) 0.002

* 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.