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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179900627 (SMSS J172818.17-203623.9)

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Data releaseDR4
RA (deg)262.0757
Dec (deg)-20.6066
Galactic lon. (deg)4.9638
Galactic lat. (deg)7.7654
E(B-V) (SFD98) (mag)0.862
E(B-V) (GNILC) (mag)0.742 ± 0.036
Nearest DR4 source 179900623 (6.0 arcs away)
2nd-nearest DR4 source 179900625 (8.0 arcs away)
3rd-nearest DR4 source 179900650 (9.4 arcs away)
Times observed26
Total bad pixels3
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 19.048 ± 0.070 18.107 ± 0.082 17.541 ± 0.036 17.141 ± 0.032
Petrosian mag. 18.480 ± 0.117 17.554 ± 0.158 16.995 ± 0.115 16.695 ± 0.108

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 19.140 ± 0.047 1,0 100 2
g 20190506165109 19.142 ± 0.044 1,0 100 2
g 20190507143127 19.163 ± 0.064 1,0 100 2
g 20190822094124 19.099 ± 0.044 3,0 100 2
r 20140722114203 18.471 ± 0.168 0,0 5 2
r 20190505165926 18.170 ± 0.042 1,0 100 2
r 20190506165309 18.235 ± 0.042 1,0 100 2
r 20190507143327 18.124 ± 0.055 3,0 100 2
r 20190822094324 18.200 ± 0.041 3,0 100 2
i 20140719115004 17.619 ± 0.104 0,0 10 2
i 20140722114229 17.618 ± 0.096 0,0 10 2
i 20150901084153 17.513 ± 0.044 0,0 100 2
i 20160420172350 17.684 ± 0.124 0,3 10 2
i 20190505170526 17.523 ± 0.044 1,0 100 2
i 20190508164002 17.549 ± 0.056 1,0 100 2
i 20190509140533 17.508 ± 0.060 1,0 100 2
i 20190720124743 17.503 ± 0.068 1,0 100 2
i 20200513190610 17.586 ± 0.056 1,0 100 2
z 20140722114259 17.103 ± 0.078 0,0 20 2
z 20150901084353 17.107 ± 0.047 0,0 100 2
z 20160420172420 17.162 ± 0.096 0,0 20 2
z 20190505170726 17.168 ± 0.052 0,0 100 2
z 20190508164202 17.168 ± 0.058 0,0 100 2
z 20190509140733 17.125 ± 0.068 0,0 100 2
z 20190720124943 17.121 ± 0.070 1,0 100 2
z 20200513190811 17.240 ± 0.074 0,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.38 1.84
GAIA source ID 4121022288747807360 4121022293080581376
Bp mag. 19.064 --
G mag. 18.184 20.605
Rp mag. 17.238 --
Bp/Rp excess 1.328 --
Parallax (mas) 0.183 ± 0.203 -0.889 ± 1.873
PM RA (mas/yr) -3.154 ± 0.192 -3.151 ± 1.860
PM Dec (mas/yr) -9.044 ± 0.153 -3.846 ± 1.306
A.E.N. (mas) 0.272 ± 0.663 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 18.236 ± 0.003
i -- ± --
z -- ± --
Y -- ± --
J 15.788 ± 0.009
H -- ± --
K 14.980 ± 0.015
W1 14.685 ± 0.016
W2 15.121 ± 0.069
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.