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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 229802848 (SMSS J185711.38-301925.7)

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Data releaseDR4
RA (deg)284.2974
Dec (deg)-30.3239
Galactic lon. (deg)5.9431
Galactic lat. (deg)-14.4478
E(B-V) (SFD98) (mag)0.145
E(B-V) (GNILC) (mag)0.133 ± 0.006
Nearest DR4 source 229802843 (7.0 arcs away)
2nd-nearest DR4 source 229802955 (8.9 arcs away)
3rd-nearest DR4 source 229802847 (10.4 arcs away)
Times observed20
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 18.396 ± 0.072 18.072 ± 0.074 17.878 ± 0.056 17.708 ± 0.089
Petrosian mag. 18.388 ± 0.024 18.101 ± 0.030 17.809 ± 0.029 17.750 ± 0.072

2 x 2 arcmin

Image cutouts

See all image cutouts for this object here.
Images shown are the best images available from DR4, as determined by their coverage and approximate photometric zero-point.

Photometry measurements

Filter Image ID Magnitude (APC05) Flags Exp time (s) Image Quality
(1=best to 3)
g 20140828094429 18.448 ± 0.032 3,0 100 1
g 20140831091248 18.413 ± 0.031 0,0 100 1
g 20141006094739 18.433 ± 0.058 0,0 100 3
g 20190829093256 18.47 ± 0.034 3,0 100 2
r 20140828094629 18.129 ± 0.034 1,0 100 1
r 20140831091449 18.059 ± 0.032 0,0 100 1
r 20141006094940 18.020 ± 0.049 0,0 100 3
r 20170825115621 18.099 ± 0.036 3,0 100 1
r 20190829093456 18.157 ± 0.034 3,0 100 2
i 20140828095230 17.857 ± 0.041 0,0 100 1
i 20141006102359 17.832 ± 0.068 0,0 100 2
i 20170314185652 17.934 ± 0.061 0,0 100 2
i 20170408173332 17.847 ± 0.122 0,0 10 2
i 20180323190254 17.856 ± 0.04 0,0 100 1
i 20190623121941 17.945 ± 0.046 0,0 100 2
i 20190806110632 17.953 ± 0.041 0,0 100 2
z 20140804104003 18.254 ± 0.214 0,0 20 2
z 20140828095431 17.756 ± 0.062 0,0 100 2
z 20141006095341 17.781 ± 0.086 0,0 100 2
z 20170314185852 17.786 ± 0.073 0,0 100 2
z 20180323190454 17.776 ± 0.061 0,0 100 1
z 20190806110832 17.793 ± 0.058 0,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.85 1.76
GAIA source ID 6760443347570284288 6760443351888693632
Bp mag. 18.896 19.226
G mag. 18.497 18.822
Rp mag. 17.976 18.363
Bp/Rp excess 1.183 1.142
Parallax (mas) -0.017 ± 0.174 0.086 ± 0.217
PM RA (mas/yr) 1.560 ± 0.198 -3.695 ± 0.248
PM Dec (mas/yr) -9.927 ± 0.176 -7.310 ± 0.221
A.E.N. (mas) 0.0 ± 0.000 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u 20.187 ± 0.018
g 18.958 ± 0.002
r 18.545 ± 0.001
i 18.325 ± 0.004
z 18.279 ± 0.006
Y -- ± --
J 17.266 ± 0.035
H -- ± --
K 16.817 ± 0.084
W1 16.669 ± 0.052
W2 17.36 ± 0.269
W3 -- ± --
W4 -- ± --
1Magnitude sources
FUV/NUV: AB mag (calibrated) from GALEX
ugriz: AB mag (Kron) from NOAO Source Catalog
YJHK: Vega mag from VISTA (2" aperture) or 2MASS PSC
W1-W4: Vega mag from CatWISE2020 or AllWISE (profile mag). No error value means the stated value is an upper limit.