LHS 5138

All names: Gaia DR3 599922307511771776, LP 485-12, Gaia DR2 599922307511771776, J0828+0942, LHS 5138, SDSS J082808.04+094216.7, SDSS J082808.04+094216.6, Gaia EDR3 599922307511771776, USNO-B1.0 0997-00184355, LSPM J0828+0942, PM J08281+0942, WDJ082807.86+094217.47, 08281+0942, NLTT 19582

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 08 28 08.34 (0.1) 08 28 08.32 (0.2) 08 28 08.34 08 28 07.86 (0.1) 08 28 08.32
Declination 09 42 15.31 (0.1) 09 42 15.38 (0.1) 09 42 15.31 09 42 17.48 (0.1) 09 42 15.38
Spectral type DC DC DC DC DC DA: DC
Effective temperature [K] 4462.0 (38) 4513.0 (14) 4437.0 4122.0 5190.0 (372) 4456.0 (70)
log(g) [cgs] 7.31 (0.03) 7.41 (0.02) 7.32 7.05 8.00 (0) 7.30 (0.05)
Mass [M] 0.25 (0.01) 0.286 (0.009) 0.255 0.171 0.57 (0.1) 0.247 (0.02)
log(Luminosity) [L] -3.99
Cooling age [Gyr] 2.9400 2.6740 2.4190
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] 19.03 (0.2) 19.28 (0.2) 19.28 (0.2) 19.03 19.03 (0.2) 19.28 (0.2)
Distance [pc] 52.56 (0.5) 51.87 (0.6) 51.87 (0.6) 54.50 (9) 52.56 52.56 (0.5) 51.87 (0.6)
Composition H H He
Proper motion (right ascension) [mas/yr] 443.1653604 (0.2) 443.37755 (0.4) 443.165 (0.2) 443.37755
Proper motion (declination) [mas/yr] -135.2146483 (0.2) -135.1901783 (0.2) -135.215 (0.2) -135.1901783
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.00
V magnitude
R magnitude 17.80
I magnitude
J magnitude 16.76 (0.02)
H magnitude
K magnitude
u magnitude 21.11 (0.1) 21.08 (0.07) 21.08 (0.07)
g magnitude 19.16 (0.01) 19.16 (0.01)
r magnitude 18.19 (0.007) 18.19 (0.007)
i magnitude 17.83 (0.007) 17.83 (0.007)
z magnitude 17.64 (0.02) 17.64 (0.02)
G magnitude 18.22 (0.03) 18.25 18.22 18.22 (0.003) 18.25
BP magnitude 18.90 (0.03) 18.78 18.78
RP magnitude 17.49 (0.02) 17.51 17.51
Pan g magnitude 19.02 (0.005) 19.02 (0.005)
Pan r magnitude 18.18 (0.008) 18.18 (0.008)
Pan i magnitude 17.85 (0.007) 17.85 (0.007)
Pan z magnitude 17.69 (0.004) 17.70 (0.004)
Pan y magnitude 17.64 (0.01) 17.64 (0.009)
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.