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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179849051 (SMSS J172718.10-204001.0)

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Data releaseDR4
RA (deg)261.825
Dec (deg)-20.667
Galactic lon. (deg)4.784
Galactic lat. (deg)7.929
E(B-V) (SFD98) (mag)0.764
E(B-V) (GNILC) (mag)0.598 ± 0.029
Nearest DR4 source 2268083618 (3.1 arcs away)
2nd-nearest DR4 source 1212926535 (5.4 arcs away)
3rd-nearest DR4 source 179849052 (5.8 arcs away)
Times observed22
Total bad pixels2
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 18.437 ± 0.150 17.901 ± 0.036 16.576 ± 0.093 16.307 ± 0.093
Petrosian mag. 18.456 ± 0.051 18.010 ± 0.133 16.266 ± 0.064 16.103 ± 0.062

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 18.733 ± 0.138 0,0 5 2
g 20190506165109 18.510 ± 0.032 3,0 100 2
r 20140722114203 18.028 ± 0.105 0,0 5 2
r 20140729111131 17.933 ± 0.091 3,0 5 2
r 20160420170109 17.903 ± 0.129 0,0 5 2
i 20140719115004 16.809 ± 0.053 2,0 10 2
i 20140722114229 16.787 ± 0.051 2,0 10 2
i 20140729111202 16.858 ± 0.052 0,0 10 2
i 20150901084153 16.847 ± 0.034 3,0 100 2
i 20150901084554 16.835 ± 0.032 3,0 100 2
i 20160420170134 16.871 ± 0.060 0,0 10 2
i 20180605124636 16.978 ± 0.073 0,2 10 2
i 20190505170526 16.839 ± 0.033 19,0 100 2
i 20210407183626 16.824 ± 0.063 2,0 10 2
z 20140719115035 16.515 ± 0.058 3,0 20 2
z 20140722114259 16.447 ± 0.048 2,0 20 2
z 20140729111235 16.405 ± 0.048 2,0 20 2
z 20150901084353 16.452 ± 0.037 3,0 100 2
z 20150901084754 16.452 ± 0.035 3,0 100 2
z 20160420170204 16.536 ± 0.058 0,0 20 2
z 20180605124707 16.493 ± 0.062 3,0 20 2
z 20190505170726 16.474 ± 0.036 19,0 100 2
z 20190509140733 16.507 ± 0.055 3,0 100 2
z 20210407183658 16.653 ± 0.071 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.33 2.91
GAIA source ID 4121026721151668096 4121026725489931904
Bp mag. 18.652 --
G mag. 17.674 20.839
Rp mag. 16.722 --
Bp/Rp excess 1.306 --
Parallax (mas) 0.262 ± 0.108 -- ± --
PM RA (mas/yr) -3.988 ± 0.128 -- ± --
PM Dec (mas/yr) -4.664 ± 0.088 -- ± --
A.E.N. (mas) 0.000 ± 0.000 2.043 ± 0.342

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 19.106 ± 0.009
r 17.853 ± 0.005
i 17.244 ± 0.005
z 16.896 ± 0.005
Y -- ± --
J 15.222 ± 0.006
H -- ± --
K 14.365 ± 0.009
W1 14.048 ± 0.014
W2 14.391 ± 0.023
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.