Gaia DR2 4453933690711829504

All names: SDSS J161855.64+110553.1, Gaia DR2 4453933690711829504, LSPM J1618+1105, LP 504-52, SDSS J161855.65+110553.1, WDJ161855.67+110551.65, USNO-B1.0 1010-00253123, NLTT 42483, Gaia DR3 4453933690711829504, Gaia EDR3 4453933690711829504

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 16 18 55.61 (0.1) 16 18 55.61 16 18 55.61 16 18 55.67 (0.1) 16 18 55.61
Declination 11 05 56.21 (0.1) 11 05 56.07 11 05 56.21 11 05 51.65 (0.1) 11 05 56.07
Spectral type DA DA DA
Effective temperature [K] 5177.0 (16) 5201.0 4892.0 5261.0 (67)
log(g) [cgs] 7.90 (0.01) 7.90 7.68 7.96 (0.03)
Mass [M] 0.523 (0.01) 0.523 0.396 0.557 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.4890 3.1370
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] 18.07 (0.2) 17.94 (0.2) 18.07 18.07 (0.2) 17.94 (0.2)
Distance [pc] 55.33 (0.5) 55.75 (0.6) 55.33 55.33 (0.5) 55.75 (0.6)
Composition H
Proper motion (right ascension) [mas/yr] -52.3529669 (0.1) -52.27794424 (0.2) -52.353 (0.1) -52.27794424
Proper motion (declination) [mas/yr] 284.8819614 (0.1) 284.9001351 (0.2) 284.882 (0.1) 284.9001351
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.40
V magnitude
R magnitude 17.80
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.36 (0.04) 20.36 (0.04)
g magnitude 18.85 (0.009) 18.85 (0.009)
r magnitude 18.24 (0.007) 18.24 (0.007)
i magnitude 18.02 (0.009) 18.02 (0.009)
z magnitude 17.90 (0.02) 17.90 (0.02)
G magnitude 18.28 (0.02) 18.30 18.28 18.28 (0.003) 18.30
BP magnitude 18.72 (0.02) 18.71 18.71
RP magnitude 17.69 (0.01) 17.67 17.67
Pan g magnitude 18.78 (0.004)
Pan r magnitude 18.25 (0.008)
Pan i magnitude 18.02 (0.004)
Pan z magnitude 17.95 (0.009)
Pan y magnitude 17.92 (0.01)
E(B-V) 0.002

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.