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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179803064 (SMSS J172457.88-204538.5)

Find on Search these coordinates on SIMBAD   

Data releaseDR4
RA (deg)261.241
Dec (deg)-20.761
Galactic lon. (deg)4.403
Galactic lat. (deg)8.336
E(B-V) (SFD98) (mag)0.732
E(B-V) (GNILC) (mag)0.644 ± 0.028
Nearest DR4 source 179803084 (5.4 arcs away)
2nd-nearest DR4 source 179803063 (5.9 arcs away)
3rd-nearest DR4 source 179803097 (13.0 arcs away)
Times observed35
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 18.671 ± 0.025 17.774 ± 0.022 17.041 ± 0.016 16.658 ± 0.013
Petrosian mag. — — 18.539 ± 0.062 17.639 ± 0.056 16.998 ± 0.042 16.657 ± 0.045

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 18.797 ± 0.156 0,0 5 2
g 20190505165725 18.722 ± 0.038 2,0 100 2
g 20190506165109 18.667 ± 0.034 0,0 100 2
g 20190507143127 18.697 ± 0.038 0,0 100 2
g 20190822094124 18.766 ± 0.045 0,0 100 2
r 20140722114203 17.753 ± 0.088 0,0 5 2
r 20140729111131 17.993 ± 0.102 0,0 5 2
r 20160420170109 17.771 ± 0.117 0,0 5 2
r 20190505165926 17.79 ± 0.040 2,0 100 2
r 20190506165309 17.827 ± 0.033 2,0 100 2
r 20190507143327 17.786 ± 0.036 0,0 100 2
r 20190822094324 17.810 ± 0.039 0,0 100 2
i 20140719115004 17.216 ± 0.073 0,0 10 2
i 20140722114229 17.023 ± 0.060 0,0 10 2
i 20140729111202 17.127 ± 0.062 0,0 10 2
i 20150901084153 17.025 ± 0.034 0,0 100 2
i 20150901084554 17.039 ± 0.034 1,0 100 2
i 20160420170134 17.164 ± 0.077 0,0 10 2
i 20180605124636 17.052 ± 0.081 0,0 10 2
i 20180804082838 17.163 ± 0.041 0,0 100 2
i 20190505170526 17.080 ± 0.035 0,0 100 2
i 20190508164002 17.109 ± 0.039 16,0 100 2
i 20190509140533 17.120 ± 0.042 8194,0 100 2
i 20190720124743 17.100 ± 0.056 0,0 100 2
i 20200513170714 17.110 ± 0.043 8192,0 100 2
i 20200513190610 17.121 ± 0.041 8192,0 100 2
i 20210407183626 17.054 ± 0.078 0,0 10 2
z 20140719115035 16.682 ± 0.066 0,0 20 2
z 20140722114259 16.648 ± 0.055 0,0 20 2
z 20140729111235 16.614 ± 0.052 0,0 20 2
z 20150901084353 16.656 ± 0.037 0,0 100 2
z 20150901084754 16.658 ± 0.037 0,0 100 2
z 20160420170204 16.903 ± 0.080 0,0 20 2
z 20180605124707 16.631 ± 0.072 0,0 20 2
z 20180804083039 16.784 ± 0.044 0,0 100 2
z 20190505170726 16.709 ± 0.041 0,0 100 2
z 20190508164202 16.688 ± 0.040 0,0 100 2
z 20190509140733 16.752 ± 0.051 8192,0 100 2
z 20190720124943 16.701 ± 0.056 0,0 100 2
z 20200513170916 16.717 ± 0.043 8192,0 100 2
z 20200513190811 16.825 ± 0.056 8192,0 100 2
z 20210407183658 16.73 ± 0.079 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.25 3.34
GAIA source ID 4121124680767692800 4121124685072746368
Bp mag. 18.539 20.120
G mag. 17.617 19.727
Rp mag. 16.675 18.551
Bp/Rp excess 1.312 1.749
Parallax (mas) 0.178 ± 0.105 0.068 ± 0.414
PM RA (mas/yr) 3.211 ± 0.135 -2.757 ± 0.602
PM Dec (mas/yr) -8.116 ± 0.096 -6.491 ± 0.410
A.E.N. (mas) 0.260 ± 1.393 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 18.978 ± 0.008
r 17.805 ± 0.002
i 17.190 ± 0.008
z 16.833 ± 0.008
Y -- ± --
J 15.200 ± 0.005
H -- ± --
K 14.392 ± 0.008
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.