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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179900772 (SMSS J172819.13-203540.3)

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Data releaseDR4
RA (deg)262.0797
Dec (deg)-20.5945
Galactic lon. (deg)4.9761
Galactic lat. (deg)7.7688
E(B-V) (SFD98) (mag)0.862
E(B-V) (GNILC) (mag)0.742 ± 0.036
Nearest DR4 source 179900773 (7.5 arcs away)
2nd-nearest DR4 source 179900774 (9.6 arcs away)
3rd-nearest DR4 source 179900775 (12.1 arcs away)
Times observed36
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 18.295 ± 0.016 17.316 ± 0.012 16.514 ± 0.010 16.081 ± 0.011
Petrosian mag. — — 18.400 ± 0.023 17.410 ± 0.033 16.624 ± 0.025 16.222 ± 0.026

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 20190505165725 18.306 ± 0.033 3,0 100 2
g 20190506165109 18.293 ± 0.028 3,0 100 2
g 20190507143127 18.300 ± 0.049 3,0 100 2
r 20140719114939 17.287 ± 0.073 0,0 5 2
r 20140722114203 17.342 ± 0.067 0,0 5 2
r 20160420172325 17.363 ± 0.078 0,0 5 2
r 20190505165926 17.307 ± 0.032 3,0 100 2
r 20190506165309 17.319 ± 0.031 3,0 100 2
r 20190507143327 17.331 ± 0.048 3,0 100 2
r 20190822094324 17.318 ± 0.031 3,0 100 2
r 20210407183558 17.569 ± 0.095 0,0 5 2
i 20140719115004 16.502 ± 0.046 0,0 10 2
i 20140722114229 16.465 ± 0.046 0,0 10 2
i 20150901084153 16.529 ± 0.031 3,0 100 2
i 20160420172350 16.524 ± 0.049 0,0 10 2
i 20180605125802 16.610 ± 0.064 0,0 10 2
i 20190505170526 16.508 ± 0.032 3,0 100 2
i 20190508164002 16.547 ± 0.039 3,0 100 2
i 20190509140533 16.500 ± 0.052 3,0 100 2
i 20190720124743 16.492 ± 0.062 3,0 100 2
i 20200513190610 16.560 ± 0.036 3,0 100 2
i 20200524153441 16.553 ± 0.055 1,0 10 2
i 20210407183626 16.584 ± 0.054 0,0 10 2
i 20210411183047 16.553 ± 0.062 3,0 10 2
z 20140719115035 16.092 ± 0.046 0,0 20 2
z 20140722114259 16.162 ± 0.042 0,0 20 2
z 20150901084353 16.066 ± 0.030 0,0 100 2
z 20160420172420 16.084 ± 0.042 0,0 20 2
z 20180605125833 16.097 ± 0.055 0,0 20 2
z 20190505170726 16.077 ± 0.033 3,0 100 2
z 20190508164202 16.083 ± 0.033 3,0 100 2
z 20190509140733 16.091 ± 0.055 3,0 100 2
z 20190720124943 16.043 ± 0.059 3,0 100 2
z 20200513190811 16.095 ± 0.041 3,0 100 2
z 20200524153511 16.176 ± 0.059 3,0 20 3
z 20210407183658 16.152 ± 0.050 0,0 20 2
z 20210411183118 16.160 ± 0.053 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.3 3.8
GAIA source ID 4121022288750580096 4121022293072396928
Bp mag. 18.113 20.647
G mag. 17.220 19.895
Rp mag. 16.144 19.002
Bp/Rp excess 1.452 1.321
Parallax (mas) 0.184 ± 0.115 0.685 ± 0.699
PM RA (mas/yr) -3.173 ± 0.116 -0.669 ± 0.663
PM Dec (mas/yr) -6.170 ± 0.095 -1.275 ± 0.504
A.E.N. (mas) 0.199 ± 1.033 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 17.348 ± 0.002
i -- ± --
z -- ± --
Y -- ± --
J 14.663 ± 0.019
H 13.914 ± 0.02
K 13.737 ± 0.037
W1 13.57 ± 0.013
W2 13.816 ± 0.015
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.