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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179851324 (SMSS J172730.57-203639.6)

Find on Search these coordinates on SIMBAD   

Data releaseDR4
RA (deg)261.877
Dec (deg)-20.611
Galactic lon. (deg)4.858
Galactic lat. (deg)7.919
E(B-V) (SFD98) (mag)0.764
E(B-V) (GNILC) (mag)0.616 ± 0.030
Nearest DR4 source 1212929334 (5.9 arcs away)
2nd-nearest DR4 source 179851323 (8.1 arcs away)
3rd-nearest DR4 source 179851321 (8.1 arcs away)
Times observed6
Total bad pixels0
Observing flags1024

Magnitudes

Filter u v g r i z
PSF mag. 19.484 ± 0.055 18.500 ± -- 17.806 ± 0.031 17.408 ± 0.051
Petrosian mag. 20.280 ± 0.112 18.975 ± -- 18.328 ± 0.101 18.236 ± 0.265

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 19.506 ± 0.060 1024,0 100 2
g 20190506165109 19.528 ± 0.058 1024,0 100 2
g 20190507143127 19.606 ± 0.079 0,0 100 2
g 20190822094124 19.594 ± 0.062 0,0 100 2
r 20190505165926 18.689 ± 0.056 1024,0 100 2
r 20190506165309 18.582 ± 0.050 1024,0 100 2
r 20190507143327 18.653 ± 0.063 1024,0 100 2
r 20190822094324 18.735 ± 0.054 1024,0 100 2
i 20140719115004 17.918 ± 0.124 512,0 10 2
i 20140722114229 17.804 ± 0.106 0,0 10 2
i 20150901084153 17.929 ± 0.055 1024,0 100 2
i 20160420170134 18.061 ± 0.161 0,0 10 2
i 20190505170526 17.850 ± 0.052 1024,0 100 2
i 20190508164002 18.042 ± 0.074 1040,0 100 2
i 20190509140533 17.851 ± 0.067 0,0 100 2
i 20190720124743 17.902 ± 0.075 1024,0 100 2
i 20200513190610 18.060 ± 0.079 1024,0 100 2
z 20140722114259 17.502 ± 0.104 0,0 20 2
z 20150901084353 17.528 ± 0.064 1024,0 100 2
z 20160420170204 17.561 ± 0.133 512,0 20 2
z 20190505170726 17.515 ± 0.067 1024,0 100 2
z 20190508164202 17.529 ± 0.073 1040,0 100 2
z 20190509140733 17.542 ± 0.083 1024,0 100 2
z 20190720124943 17.478 ± 0.079 1024,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.13 5.78
GAIA source ID 4121036101360293760 4121036105688867584
Bp mag. 19.187 20.483
G mag. 18.262 19.702
Rp mag. 17.367 18.660
Bp/Rp excess 1.269 1.452
Parallax (mas) -0.222 ± 0.172 0.960 ± 0.523
PM RA (mas/yr) -0.584 ± 0.188 -2.199 ± 0.549
PM Dec (mas/yr) -6.585 ± 0.137 -3.645 ± 0.400
A.E.N. (mas) 0.169 ± 0.256 0.0 ± 0.000

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 19.597 ± 0.013
r 18.461 ± 0.003
i 17.855 ± 0.008
z 17.541 ± 0.008
Y -- ± --
J 15.950 ± 0.011
H -- ± --
K 15.157 ± 0.018
W1 15.316 ± 0.02
W2 15.185 ± 0.039
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.