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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179821066 (SMSS J172717.20-204959.0)

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Data releaseDR4
RA (deg)261.8217
Dec (deg)-20.8331
Galactic lon. (deg)4.6415
Galactic lat. (deg)7.8416
E(B-V) (SFD98) (mag)0.983
E(B-V) (GNILC) (mag)0.903 ± 0.044
Nearest DR4 source 179821065 (6.5 arcs away)
2nd-nearest DR4 source 179821064 (9.8 arcs away)
3rd-nearest DR4 source 2268053140 (9.8 arcs away)
Times observed29
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. 18.518 ± 0.016 17.340 ± 0.015 16.331 ± 0.010 15.756 ± 0.012
Petrosian mag. 18.628 ± 0.030 17.440 ± 0.023 16.405 ± 0.020 15.808 ± 0.016

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 20140729111106 18.441 ± 0.109 0,0 5 2
g 20190505165725 18.525 ± 0.030 3,0 100 2
g 20190506165109 18.527 ± 0.032 3,0 100 2
g 20190507143127 18.512 ± 0.030 3,0 100 2
r 20140719114939 17.173 ± 0.060 3,0 5 2
r 20140722114203 17.396 ± 0.065 0,0 5 2
r 20140729111131 17.387 ± 0.061 0,0 5 2
r 20160420170109 17.471 ± 0.09 0,0 5 2
r 20190505165926 17.348 ± 0.030 3,0 100 2
r 20190506165309 17.347 ± 0.029 3,0 100 2
r 20190507143327 17.325 ± 0.036 3,0 100 2
r 20210407183558 17.375 ± 0.083 529,0 5 2
i 20140719115004 16.365 ± 0.041 3,0 10 2
i 20140722114229 16.263 ± 0.039 3,0 10 2
i 20140729111202 16.346 ± 0.039 3,0 10 2
i 20150901084153 16.351 ± 0.031 3,0 100 2
i 20150901084554 16.35 ± 0.029 3,0 100 2
i 20160420170134 16.344 ± 0.041 3,0 10 2
i 20180605124636 16.260 ± 0.047 3,0 10 2
i 20190505170526 16.311 ± 0.030 3,0 100 2
i 20190509140533 16.358 ± 0.047 3,0 100 2
i 20200524153441 16.312 ± 0.048 3,0 10 2
i 20210407183626 16.31 ± 0.046 19,0 10 2
z 20140719115035 15.779 ± 0.037 3,0 20 2
z 20140722114259 15.742 ± 0.035 3,0 20 2
z 20140729111235 15.793 ± 0.036 3,0 20 2
z 20150901084353 15.767 ± 0.032 3,0 100 2
z 20150901084754 15.740 ± 0.030 3,0 100 2
z 20160420170204 15.820 ± 0.036 3,0 20 2
z 20190505170726 15.725 ± 0.030 3,0 100 2
z 20190508164202 15.715 ± 0.027 3,0 100 2
z 20210407183658 15.813 ± 0.041 19,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.13 3.95
GAIA source ID 4121011332353977344 4121011332326235136
Bp mag. 18.292 20.836
G mag. 17.058 20.923
Rp mag. 15.977 19.479
Bp/Rp excess 1.372 2.378
Parallax (mas) 0.051 ± 0.071 -- ± --
PM RA (mas/yr) -4.847 ± 0.087 -- ± --
PM Dec (mas/yr) -6.670 ± 0.061 -- ± --
A.E.N. (mas) 0.096 ± 0.360 5.436 ± 2.394

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 18.935 ± 0.005
r 17.365 ± 0.002
i 16.511 ± 0.003
z 16.010 ± 0.002
Y -- ± --
J 14.187 ± 0.03
H 13.381 ± 0.024
K 13.092 ± 0.027
W1 13.063 ± 0.019
W2 13.109 ± 0.018
W3 11.855 ± 0.36
W4 8.527 ± 0.459
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.