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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179900599 (SMSS J172818.59-203641.2)

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Data releaseDR4
RA (deg)262.0775
Dec (deg)-20.6115
Galactic lon. (deg)4.9606
Galactic lat. (deg)7.7613
E(B-V) (SFD98) (mag)0.862
E(B-V) (GNILC) (mag)0.742 ± 0.036
Nearest DR4 source 179900648 (5.9 arcs away)
2nd-nearest DR4 source 179900650 (11.2 arcs away)
3rd-nearest DR4 source 179900600 (11.5 arcs away)
Times observed15
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 19.225 ± 0.020 18.389 ± 0.017 17.783 ± 0.021 17.407 ± 0.020
Petrosian mag. 19.432 ± 0.061 18.662 ± 0.086 17.943 ± 0.124 17.781 ± 0.095

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 19.205 ± 0.049 2,0 100 2
g 20190506165109 19.191 ± 0.045 0,0 100 2
g 20190507143127 19.274 ± 0.068 0,0 100 2
r 20190505165926 18.369 ± 0.046 0,0 100 2
r 20190506165309 18.388 ± 0.045 0,0 100 2
r 20190507143327 18.377 ± 0.060 2,0 100 2
i 20140722114229 17.984 ± 0.130 0,0 10 2
i 20150901084153 17.783 ± 0.051 1024,0 100 2
i 20160420172350 17.884 ± 0.147 512,0 10 2
i 20190505170526 17.779 ± 0.050 1024,0 100 2
i 20190508164002 17.789 ± 0.065 0,0 100 2
i 20190509140533 17.709 ± 0.064 0,0 100 2
i 20190720124743 17.771 ± 0.073 3,0 100 2
i 20200513190610 17.860 ± 0.067 1024,0 100 2
z 20140722114259 17.447 ± 0.103 0,0 20 2
z 20150901084353 17.367 ± 0.056 1024,0 100 2
z 20160420172420 17.610 ± 0.141 0,0 20 2
z 20190505170726 17.346 ± 0.059 0,0 100 2
z 20190508164202 17.475 ± 0.072 1024,0 100 2
z 20190509140733 17.445 ± 0.078 0,0 100 2
z 20190720124943 17.441 ± 0.078 0,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.23 2.48
GAIA source ID 4121022288747803776 4121022190000389632
Bp mag. 19.101 --
G mag. 18.340 20.489
Rp mag. 17.364 --
Bp/Rp excess 1.394 --
Parallax (mas) -0.582 ± 0.251 -0.536 ± 1.783
PM RA (mas/yr) 1.559 ± 0.232 -5.973 ± 2.041
PM Dec (mas/yr) -7.782 ± 0.185 -6.273 ± 1.410
A.E.N. (mas) 0.634 ± 2.649 0.726 ± 0.118

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 18.311 ± 0.003
i -- ± --
z -- ± --
Y -- ± --
J 16.079 ± 0.012
H -- ± --
K 15.362 ± 0.021
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.