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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179803092 (SMSS J172457.49-204512.7)

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Data releaseDR4
RA (deg)261.240
Dec (deg)-20.754
Galactic lon. (deg)4.408
Galactic lat. (deg)8.341
E(B-V) (SFD98) (mag)0.732
E(B-V) (GNILC) (mag)0.628 ± 0.029
Nearest DR4 source 1212878921 (3.6 arcs away)
2nd-nearest DR4 source 179803087 (4.4 arcs away)
3rd-nearest DR4 source 179803093 (5.6 arcs away)
Times observed24
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 18.714 ± 0.063 17.834 ± 0.036 17.110 ± 0.047 16.768 ± 0.031
Petrosian mag. 18.902 ± 0.225 16.160 ± 0.609 16.962 ± 0.066 16.712 ± 0.046

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 20140729111106 18.780 ± 0.154 0,0 5 2
r 20140722114203 17.976 ± 0.106 0,0 5 2
r 20140729111131 17.883 ± 0.093 0,0 5 2
r 20160420170109 17.977 ± 0.140 0,0 5 2
r 20190505165926 17.828 ± 0.04 3,0 100 2
r 20190506165309 17.827 ± 0.033 3,0 100 2
r 20190822094324 17.874 ± 0.040 3,0 100 2
i 20140719115004 17.189 ± 0.071 3,0 10 2
i 20140722114229 17.262 ± 0.072 1,0 10 2
i 20140729111202 17.198 ± 0.065 0,0 10 2
i 20150901084153 17.103 ± 0.035 3,0 100 2
i 20150901084554 17.094 ± 0.034 3,0 100 2
i 20160420170134 17.133 ± 0.075 0,0 10 2
i 20180605124636 17.093 ± 0.084 0,0 10 2
i 20180804082838 17.151 ± 0.041 3,33 100 2
i 20200513170714 17.148 ± 0.044 8195,0 100 2
i 20210407183626 17.136 ± 0.082 0,0 10 2
z 20140719115035 16.923 ± 0.080 3,0 20 2
z 20140722114259 16.782 ± 0.060 1,0 20 2
z 20140729111235 16.785 ± 0.059 1,0 20 2
z 20150901084353 16.758 ± 0.039 3,0 100 2
z 20150901084754 16.739 ± 0.038 3,0 100 2
z 20160420170204 16.836 ± 0.075 0,0 20 2
z 20180605124707 16.861 ± 0.086 1,0 20 2
z 20190508164202 16.783 ± 0.042 3,0 100 2
z 20210407183658 16.955 ± 0.094 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.26 1.14
GAIA source ID 4121124886928592384 4121124886953521280
Bp mag. 18.628 --
G mag. 17.778 20.306
Rp mag. 16.81 --
Bp/Rp excess 1.358 --
Parallax (mas) 0.220 ± 0.110 -- ± --
PM RA (mas/yr) -1.188 ± 0.132 -- ± --
PM Dec (mas/yr) 0.942 ± 0.094 -- ± --
A.E.N. (mas) 0.0 ± 0.000 1.901 ± 0.916

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 18.897 ± 0.013
r 17.807 ± 0.002
i -- ± --
z 16.892 ± 0.010
Y -- ± --
J 15.391 ± 0.006
H -- ± --
K 14.589 ± 0.010
W1 -- ± --
W2 -- ± --
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.