LP 20-214

All names: USNO-B1.0 1683-00054877, PM J12145+7822, Gaia EDR3 1717341818608187648, NLTT 30084, Gaia DR3 1717341818608187648, TIC 427587075, 2MASS J12143183+7822559, LP 20-214, Gaia DR2 1717341818608187648, 12145+7822, PSO J183.6350+78.3812, LSPM J1214+7822, WDJ121431.83+782256.54, J1214+7822

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Blouin & Xu 2022 McCleery et al. 2020 Coutu et al. 2019 Blouin et al. 2019 MWDD H Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 12 14 32.47 (0.08) 12 14 32.45 (0.1) 12 14 31.83 12 14 32.45 (0.1) 12 14 32.47 12 14 31.83 (0.08) 12 14 32.45
Declination 78 22 52.32 (0.07) 78 22 52.45 (0.08) 78 22 56.54 78 22 52.45 (0.08) 78 22 52.32 78 22 56.54 (0.07) 78 22 52.45
Spectral type DZ DZ DZ DZ DZ DZ DZ DC: DZ
Effective temperature [K] 4835.0 (59) 4895.0 (31) 4911.0 (41) 4804.1 (44) 4329.0 (61) 4210.0 (20) 4890.0 5000.0 (656) 4875.0 (33)
log(g) [cgs] 7.86 (0.05) 7.91 (0.01) 7.92 (0.03) 7.85 (0.04) 7.48 7.51 (0.02) 7.91 8.00 (0) 7.90 (0.02)
Mass [M] 0.497 (0.03) 0.514 (0.01) 0.534 (0.01) 0.3078 0.318 (0.009) 0.527 0.58 (0.1) 0.517 (0.01)
log(Luminosity) [L] -4.05
Cooling age [Gyr] 5.3500 5.4800 3.2200 3.5510 (0.1) 5.1880
log(H/He) <-30.0
log(C/He)
log(Ca/He) -11.2283 (0.1) -11.2 -11.87
log(Ca/H) -9.4 -9.13 (0.07)
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] 30.63 (0.08) 30.63 (0.08) 30.60 (0.1) 30.63 (0.08) 30.60 (0.1) 30.60 30.60 (0.1) 30.60 (0.1) 30.63 30.63 (0.08) 30.60 (0.1)
Distance [pc] 32.65 (0.09) 32.65 (0.09) 32.68 (0.1) 32.65 (0.09) 32.68 (0.1) 32.68 (0.1) 32.68 (0.1) 32.68 (0.1) 32.90 (6) 32.65 32.65 (0.09) 32.68 (0.1)
Composition H H He He He H
Proper motion (right ascension) [mas/yr] 120.8142295 (0.1) 120.4445682 (0.2) 135.0 120.814 (0.1) 120.4445682
Proper motion (declination) [mas/yr] -263.6341682 (0.1) -263.5868723 (0.2) -256.0 -263.634 (0.1) -263.5868723
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.00
V magnitude
R magnitude 17.20
I magnitude
J magnitude 16.18 (0.09) 16.18 (0.1) 16.18 16.18 (0.1)
H magnitude 15.65 (0.2) 15.65 (0.2) 15.65 15.65 (0.2)
K magnitude 15.64 (0.2) 15.64 (0.2) 15.64 15.64 (0.2)
u magnitude
g magnitude 18.05 (0.02)
r magnitude 17.38 (0.004)
i magnitude 17.12 (0.005)
z magnitude 17.03 (0.003)
G magnitude 17.42 (0.01) 17.44 17.44 17.42 17.42 (0.003) 17.44
BP magnitude 17.94 (0.01) 17.95 17.95
RP magnitude 16.76 (0.007) 16.77 16.77
Pan g magnitude 18.08 (0.01) 18.05 (0.02) 18.05 (0.02) 18.05 (0.02)
Pan r magnitude 17.37 (0.01) 17.38 (0.004) 17.38 (0.004) 17.38 (0.004)
Pan i magnitude 17.10 (0.01) 17.12 (0.005) 17.12 (0.005) 17.12 (0.005)
Pan z magnitude 17.00 (0.004) 17.03 (0.003) 17.03 (0.003) 17.03 (0.003)
Pan y magnitude 16.99 (0.01) 17.00 (0.02) 17.00 (0.02) 17.00 (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.