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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 185151942 (SMSS J172718.34-201957.7)

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Data releaseDR4
RA (deg)261.8264
Dec (deg)-20.3326
Galactic lon. (deg)5.0679
Galactic lat. (deg)8.1103
E(B-V) (SFD98) (mag)0.818
E(B-V) (GNILC) (mag)0.581 ± 0.030
Nearest DR4 source 185151943 (5.9 arcs away)
2nd-nearest DR4 source 185151945 (7.2 arcs away)
3rd-nearest DR4 source 185151947 (7.3 arcs away)
Times observed14
Total bad pixels0
Observing flags1

Magnitudes

Filter u v g r i z
PSF mag. 19.205 ± 0.177 18.387 ± 0.186 17.896 ± 0.106 17.900 ± 0.099
Petrosian mag. 18.369 ± 0.091 17.699 ± 0.055 17.162 ± 0.071 17.173 ± 0.161

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 19.439 ± 0.062 16,0 100 2
g 20190506165109 19.466 ± 0.058 1,0 100 2
g 20190507143127 19.424 ± 0.069 1,0 100 2
r 20190505165926 18.757 ± 0.065 16,0 100 2
r 20190506165309 18.630 ± 0.054 1,0 100 2
r 20190507143327 18.608 ± 0.061 1,0 100 2
i 20150901084153 17.942 ± 0.055 1,0 100 2
i 20150901084554 17.986 ± 0.060 1,0 100 2
i 20190505170526 17.977 ± 0.060 17,0 100 2
i 20190508164002 18.135 ± 0.079 0,0 100 2
i 20190509140533 17.961 ± 0.068 1,0 100 2
i 20200513190610 18.124 ± 0.081 0,0 100 2
z 20140722114259 17.761 ± 0.128 0,0 20 2
z 20140729111235 18.024 ± 0.166 0,0 20 2
z 20150901084353 17.624 ± 0.067 0,0 100 2
z 20150901084754 17.675 ± 0.075 0,0 100 2
z 20190505170726 17.780 ± 0.083 16,0 100 2
z 20190509140733 17.762 ± 0.091 0,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 1.06 1.13
GAIA source ID 4121255458241745024 4121255458241739392
Bp mag. -- 19.503
G mag. 19.433 19.159
Rp mag. -- 17.995
Bp/Rp excess -- 1.758
Parallax (mas) 0.574 ± 0.526 0.296 ± 0.424
PM RA (mas/yr) -4.218 ± 0.524 -2.385 ± 0.424
PM Dec (mas/yr) -1.166 ± 0.376 -4.264 ± 0.311
A.E.N. (mas) 0.474 ± 0.446 0.0 ± 0.000

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 19.691 ± 0.010
i -- ± --
z -- ± --
Y -- ± --
J 16.846 ± 0.022
H -- ± --
K 16.088 ± 0.045
W1 15.403 ± 0.018
W2 15.548 ± 0.061
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.