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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179909139 (SMSS J172800.98-202612.3)

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Data releaseDR4
RA (deg)262.004
Dec (deg)-20.437
Galactic lon. (deg)5.071
Galactic lat. (deg)7.914
E(B-V) (SFD98) (mag)0.814
E(B-V) (GNILC) (mag)0.634 ± 0.030
Nearest DR4 source 179909138 (4.0 arcs away)
2nd-nearest DR4 source 179909142 (9.3 arcs away)
3rd-nearest DR4 source 179909137 (10.8 arcs away)
Times observed12
Total bad pixels0
Observing flags2

Magnitudes

Filter u v g r i z
PSF mag. 19.522 ± 0.205 18.658 ± 0.132 18.012 ± 0.115 17.758 ± 0.107
Petrosian mag. 19.393 ± 0.101 18.377 ± 0.055 17.651 ± 0.071 17.577 ± 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 19.642 ± 0.079 0,0 100 2
r 20190505165926 18.814 ± 0.076 0,0 100 2
r 20190507143327 18.958 ± 0.082 0,0 100 2
r 20190822094324 18.801 ± 0.069 0,0 100 2
i 20150901084554 18.115 ± 0.065 2,0 100 2
i 20190505170526 18.069 ± 0.068 2,0 100 2
i 20190509140533 18.166 ± 0.078 0,0 100 2
i 20190720124743 18.198 ± 0.095 0,0 100 2
z 20140729111235 17.982 ± 0.159 0,0 20 2
z 20150901084754 17.821 ± 0.083 0,0 100 2
z 20190505170726 17.814 ± 0.092 0,0 100 2
z 20190720124943 17.731 ± 0.095 0,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 1.05 1.35
GAIA source ID 4121062459648787456 4121062459624147072
Bp mag. 19.825 20.335
G mag. 19.372 19.693
Rp mag. 18.092 18.480
Bp/Rp excess 1.847 1.687
Parallax (mas) 1.491 ± 0.497 1.178 ± 0.638
PM RA (mas/yr) -3.828 ± 0.585 -1.762 ± 0.735
PM Dec (mas/yr) -1.985 ± 0.381 -7.786 ± 0.478
A.E.N. (mas) 0.940 ± 1.520 0.809 ± 0.741

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 19.277 ± 0.008
i -- ± --
z -- ± --
Y -- ± --
J 16.766 ± 0.022
H -- ± --
K 16.040 ± 0.044
W1 16.005 ± 0.035
W2 17.288 ± --
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.