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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179849046 (SMSS J172717.47-203955.2)

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Data releaseDR4
RA (deg)261.823
Dec (deg)-20.665
Galactic lon. (deg)4.784
Galactic lat. (deg)7.932
E(B-V) (SFD98) (mag)0.764
E(B-V) (GNILC) (mag)0.592 ± 0.031
Nearest DR4 source 179849052 (4.9 arcs away)
2nd-nearest DR4 source 1212926535 (6.6 arcs away)
3rd-nearest DR4 source 2268083618 (7.7 arcs away)
Times observed10
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 18.648 ± 0.242 18.128 ± 0.160 17.680 ± 0.072 17.334 ± 0.104
Petrosian mag. 18.608 ± 0.064 18.041 ± 0.198 17.478 ± 0.110 16.930 ± 0.096

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 20190506165109 18.882 ± 0.038 3,0 100 2
r 20140722114203 18.203 ± 0.121 0,0 5 2
r 20140729111131 18.257 ± 0.118 0,0 5 2
i 20140719115004 17.765 ± 0.109 0,0 10 2
i 20140722114229 17.804 ± 0.105 0,0 10 2
i 20140729111202 17.732 ± 0.096 0,0 10 2
i 20160420170134 17.627 ± 0.111 0,0 10 2
z 20140722114259 17.480 ± 0.102 0,0 20 2
z 20140729111235 17.251 ± 0.084 0,0 20 2
z 20190509140733 17.338 ± 0.072 3,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.31 0.7
GAIA source ID 4121029676093848448 4121029680417672064
Bp mag. 18.984 --
G mag. 18.380 20.120
Rp mag. 17.467 --
Bp/Rp excess 1.392 --
Parallax (mas) 0.902 ± 0.495 -- ± --
PM RA (mas/yr) -3.781 ± 0.565 -- ± --
PM Dec (mas/yr) -5.649 ± 0.392 -- ± --
A.E.N. (mas) 3.748 ± 115.822 3.654 ± 3.055

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 19.067 ± 0.010
r 18.222 ± 0.006
i 17.762 ± 0.009
z 17.535 ± 0.009
Y -- ± --
J 16.357 ± 0.015
H -- ± --
K 15.788 ± 0.031
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.