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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179799293 (SMSS J172440.76-205345.6)

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Data releaseDR4
RA (deg)261.1698
Dec (deg)-20.8960
Galactic lon. (deg)4.2518
Galactic lat. (deg)8.3170
E(B-V) (SFD98) (mag)0.787
E(B-V) (GNILC) (mag)0.710 ± 0.037
Nearest DR4 source 179799300 (6.8 arcs away)
2nd-nearest DR4 source 179799294 (9.9 arcs away)
3rd-nearest DR4 source 179799302 (11.0 arcs away)
Times observed38
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 18.010 ± 0.018 17.016 ± 0.016 16.149 ± 0.011 15.667 ± 0.011
Petrosian mag. — — 17.870 ± 0.066 16.867 ± 0.023 16.051 ± 0.014 15.608 ± 0.022

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 20140722114132 18.086 ± 0.092 0,0 5 2
g 20140729111106 18.176 ± 0.093 0,0 5 2
g 20160420170043 17.849 ± 0.109 0,0 5 2
g 20190505165725 18.029 ± 0.024 3,0 100 2
g 20190506165109 18.012 ± 0.024 3,0 100 2
g 20190507143127 18.021 ± 0.028 3,0 100 2
g 20190822094124 18.044 ± 0.025 3,0 100 2
r 20140719114939 16.974 ± 0.056 0,0 5 2
r 20140722114203 17.072 ± 0.053 0,0 5 2
r 20140729111131 17.009 ± 0.048 0,0 5 2
r 20160420170109 16.968 ± 0.061 0,0 5 2
r 20190505165926 17.024 ± 0.026 3,0 100 2
r 20190506165309 17.033 ± 0.026 3,0 100 2
r 20190507143327 17.018 ± 0.030 3,0 100 2
r 20190822094324 17.028 ± 0.023 3,0 100 2
i 20140719115004 16.133 ± 0.035 0,0 10 2
i 20140722114229 16.164 ± 0.038 0,0 10 2
i 20140729111202 16.175 ± 0.034 0,0 10 2
i 20150901084153 16.128 ± 0.029 3,0 100 2
i 20150901084554 16.163 ± 0.029 3,0 100 2
i 20160420170134 16.138 ± 0.040 0,0 10 2
i 20180605124636 16.129 ± 0.048 0,0 10 2
i 20190419150817 16.160 ± 0.040 3,0 100 2
i 20190505170526 16.147 ± 0.026 3,0 100 2
i 20190508164002 16.151 ± 0.031 3,0 100 2
i 20190720124743 16.171 ± 0.041 3,0 100 2
z 20140719115035 15.687 ± 0.036 0,0 20 2
z 20140722114259 15.696 ± 0.033 0,0 20 2
z 20140729111235 15.666 ± 0.031 0,0 20 2
z 20150901084353 15.652 ± 0.028 3,0 100 2
z 20150901084754 15.673 ± 0.028 3,0 100 2
z 20160420170204 15.661 ± 0.038 0,0 20 2
z 20180605124707 15.606 ± 0.043 0,0 20 2
z 20190419151018 15.695 ± 0.038 3,0 100 2
z 20190505170726 15.674 ± 0.026 3,0 100 2
z 20190508164202 15.661 ± 0.029 3,0 100 2
z 20190720124943 15.701 ± 0.042 3,0 100 2
z 20200513183957 15.651 ± 0.040 3,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.16 2.23
GAIA source ID 4121115682864526208 4121115682832629760
Bp mag. 17.883 21.428
G mag. 16.821 20.491
Rp mag. 15.808 18.933
Bp/Rp excess 1.342 2.073
Parallax (mas) 0.108 ± 0.081 1.145 ± 1.408
PM RA (mas/yr) -3.389 ± 0.097 -1.859 ± 2.028
PM Dec (mas/yr) -5.477 ± 0.069 -2.320 ± 1.206
A.E.N. (mas) 0.0 ± 0.0 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 18.343 ± 0.003
r 16.998 ± 0.002
i 16.270 ± 0.002
z 15.846 ± 0.002
Y -- ± --
J 14.204 ± 0.032
H 13.419 ± 0.032
K 13.234 ± 0.035
W1 13.126 ± 0.015
W2 13.243 ± 0.014
W3 12.297 ± --
W4 8.904 ± --
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.