NLTT 22727

All names: PSO J147.5906+15.1516, NLTT 22727, LSPM J0950+1509, PM J09503+1509, Gaia DR2 616396182856185728, Gaia EDR3 616396182856185728, WDJ095021.80+150909.69, 09503+1509, USNO-B1.0 1051-00183201, SDSS J095021.77+150907.7, J0950+1509, LP 428-53, TIC 284966743, WD 0947+153, Gaia DR3 616396182856185728, 2MASS J09502180+1509101

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Blouin et al. 2019 MWDD H MWDD HE Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 09 50 21.73 (0.1) 09 50 21.73 (0.2) 09 50 21.73 (0.2) 09 50 21.73 09 50 21.80 (0.1) 09 50 21.73 09 50 21.60
Declination 15 09 04.74 (0.1) 15 09 04.90 (0.2) 15 09 04.90 (0.2) 15 09 04.74 15 09 09.69 (0.1) 15 09 04.90 15 09 03.24
Spectral type DC DC DC DC DC DC DC DA DC DC
Effective temperature [K] 5320.0 (67) 4999.0 (19) 5221.3 (120) 5420.0 (35) 5439.0 5150.0 5440.0 (54) 5517.0 (45)
log(g) [cgs] 7.90 (0.05) 7.73 (0.02) 7.88 (0.08) 8.01 (0.03) 8.02 7.82 8.00 (0) 8.03 (0.02)
Mass [M] 0.512 (0.03) 0.42 (0.01) 0.59 (0.02) 0.593 0.466 0.58 (0.1) 0.601 (0.02)
log(Luminosity) [L] -3.90
Cooling age [Gyr] 3.5500 3.5970 (0.3) 3.5460 3.6980
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 25.50 (0.1) 25.50 (0.1) 25.94 (0.3) 25.94 (0.3) 25.94 (0.3) 25.94 (0.3) 25.50 25.50 (0.1) 25.94 (0.3)
Distance [pc] 39.21 (0.2) 39.22 (0.2) 38.55 (0.4) 38.55 (0.4) 38.55 (0.4) 38.55 (0.4) 38.80 (4) 39.21 39.21 (0.2) 38.55 (0.4)
Composition He He H H
Proper motion (right ascension) [mas/yr] -65.52034325 (0.1) -65.69129 (0.3) -65.52 (0.1) -65.69129
Proper motion (declination) [mas/yr] -309.2955754 (0.1) -309.1698085 (0.3) -309.296 (0.1) -309.1698085
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude 17.20
I magnitude
J magnitude 16.30 (0.01) 16.16 (0.1) 16.16 16.16 (0.1)
H magnitude 15.95 (0.2) 15.95 (0.2) 15.95 15.95 (0.2)
K magnitude 15.36 (0.03) 15.36
u magnitude 19.15 (0.02) 19.14 19.18 (0.03) 19.15 (0.02)
g magnitude 17.94 17.85 (0.005) 17.94 (0.006)
r magnitude 17.39 17.39 (0.003) 17.39 (0.006)
i magnitude 17.17 17.19 (0.003) 17.17 (0.006)
z magnitude 17.10 17.15 (0.005) 17.10 (0.01)
G magnitude 17.41 (0.01) 17.42 17.42 17.41 17.41 (0.003) 17.42
BP magnitude 17.79 (0.01) 17.77 17.77
RP magnitude 16.85 (0.008) 16.84 16.84
Pan g magnitude 17.85 (0.005) 17.85 (0.005) 17.85 (0.005)
Pan r magnitude 17.39 (0.003) 17.39 (0.003) 17.39 (0.003)
Pan i magnitude 17.19 (0.003) 17.19 (0.003) 17.20 (0.003)
Pan z magnitude 17.15 (0.006) 17.15 (0.005) 17.15 (0.005)
Pan y magnitude 17.12 (0.01) 17.12 (0.01) 17.12 (0.01)
E(B-V) 0.001

* 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.