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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179799300 (SMSS J172440.75-205338.8)

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Data releaseDR4
RA (deg)261.1698
Dec (deg)-20.8941
Galactic lon. (deg)4.2534
Galactic lat. (deg)8.3181
E(B-V) (SFD98) (mag)0.787
E(B-V) (GNILC) (mag)0.709 ± 0.036
Nearest DR4 source 179799293 (6.8 arcs away)
2nd-nearest DR4 source 179799302 (7.4 arcs away)
3rd-nearest DR4 source 179799303 (12.3 arcs away)
Times observed37
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 18.236 ± 0.013 17.399 ± 0.013 16.722 ± 0.010 16.368 ± 0.011
Petrosian mag. — — 18.168 ± 0.029 17.343 ± 0.034 16.695 ± 0.022 16.375 ± 0.024

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 20140719114908 18.174 ± 0.110 0,0 5 2
g 20140729111106 18.433 ± 0.115 0,0 5 2
g 20190505165725 18.251 ± 0.027 3,0 100 2
g 20190506165109 18.230 ± 0.027 3,0 100 2
g 20190507143127 18.264 ± 0.031 3,0 100 2
g 20190822094124 18.254 ± 0.027 3,0 100 2
r 20140719114939 17.475 ± 0.082 0,0 5 2
r 20140722114203 17.5 ± 0.073 0,0 5 2
r 20140729111131 17.463 ± 0.067 0,0 5 2
r 20160420170109 17.336 ± 0.082 0,0 5 2
r 20190505165926 17.399 ± 0.029 3,0 100 2
r 20190506165309 17.394 ± 0.028 3,0 100 2
r 20190507143327 17.41 ± 0.032 3,0 100 2
r 20190822094324 17.425 ± 0.026 3,0 100 2
i 20140719115004 16.748 ± 0.052 0,0 10 2
i 20140722114229 16.819 ± 0.053 0,0 10 2
i 20140729111202 16.766 ± 0.048 0,0 10 2
i 20150901084153 16.714 ± 0.031 3,0 100 2
i 20150901084554 16.718 ± 0.031 3,0 100 2
i 20160420170134 16.690 ± 0.055 0,0 10 2
i 20180605124636 16.767 ± 0.067 0,0 10 2
i 20190419150817 16.745 ± 0.044 3,0 100 2
i 20190505170526 16.715 ± 0.029 3,0 100 2
i 20190508164002 16.701 ± 0.034 3,0 100 2
i 20190720124743 16.738 ± 0.044 3,0 100 2
z 20140719115035 16.435 ± 0.056 1,0 20 2
z 20140722114259 16.428 ± 0.048 0,0 20 2
z 20140729111235 16.380 ± 0.045 0,0 20 2
z 20150901084353 16.306 ± 0.032 3,0 100 2
z 20150901084754 16.338 ± 0.033 3,0 100 2
z 20160420170204 16.375 ± 0.054 0,0 20 2
z 20180605124707 16.369 ± 0.061 0,0 20 2
z 20190419151018 16.413 ± 0.043 3,0 100 2
z 20190505170726 16.403 ± 0.032 3,0 100 2
z 20190508164202 16.371 ± 0.034 3,0 100 2
z 20190720124943 16.402 ± 0.046 3,0 100 2
z 20200513183957 16.367 ± 0.046 3,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.2 1.79
GAIA source ID 4121115678517836544 4121115682864949760
Bp mag. 18.14 --
G mag. 17.296 20.880
Rp mag. 16.380 --
Bp/Rp excess 1.312 --
Parallax (mas) 0.170 ± 0.107 -- ± --
PM RA (mas/yr) -2.529 ± 0.130 -- ± --
PM Dec (mas/yr) -5.384 ± 0.094 -- ± --
A.E.N. (mas) 0.210 ± 1.112 8.512 ± 7.345

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 18.514 ± 0.004
r 17.430 ± 0.002
i 16.849 ± 0.003
z 16.519 ± 0.003
Y -- ± --
J 15.039 ± 0.005
H 14.488 ± 0.068
K 14.382 ± 0.008
W1 14.403 ± 0.016
W2 14.614 ± 0.026
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.