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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179900635 (SMSS J172817.32-203544.6)

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Data releaseDR4
RA (deg)262.0722
Dec (deg)-20.5958
Galactic lon. (deg)4.9712
Galactic lat. (deg)7.7740
E(B-V) (SFD98) (mag)0.862
E(B-V) (GNILC) (mag)0.742 ± 0.036
Nearest DR4 source 1212979985 (7.0 arcs away)
2nd-nearest DR4 source 179900633 (11.6 arcs away)
3rd-nearest DR4 source 179900634 (13.4 arcs away)
Times observed42
Total bad pixels3
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 17.801 ± 0.015 16.812 ± 0.015 15.966 ± 0.010 15.489 ± 0.011
Petrosian mag. — — 17.764 ± 0.038 16.813 ± 0.036 16.004 ± 0.020 15.565 ± 0.022

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 20140719114908 18.032 ± 0.097 0,0 5 2
g 20140722114132 17.814 ± 0.075 0,0 5 2
g 20160420172300 17.801 ± 0.100 0,0 5 2
g 20190505165725 17.811 ± 0.029 3,0 100 2
g 20190506165109 17.810 ± 0.024 3,0 100 2
g 20190507143127 17.820 ± 0.046 3,0 100 2
r 20140719114939 16.987 ± 0.059 0,0 5 2
r 20140722114203 16.950 ± 0.051 0,0 5 2
r 20160420172325 16.855 ± 0.052 0,0 5 2
r 20180605125736 16.742 ± 0.057 0,0 5 2
r 20190505165926 16.783 ± 0.030 3,0 100 2
r 20190506165309 16.810 ± 0.029 3,0 100 2
r 20190507143327 16.811 ± 0.046 3,0 100 2
r 20190822094324 16.797 ± 0.030 3,0 100 2
r 20200524153415 16.946 ± 0.067 1,3 5 2
r 20210407183558 16.933 ± 0.060 0,0 5 2
r 20210411183015 16.939 ± 0.065 0,0 5 2
i 20140719115004 15.973 ± 0.035 0,0 10 2
i 20140722114229 15.971 ± 0.038 0,0 10 2
i 20150901084153 15.972 ± 0.029 3,0 100 2
i 20160420172350 15.974 ± 0.035 0,0 10 2
i 20180605125802 15.981 ± 0.045 0,0 10 2
i 20190505170526 15.965 ± 0.031 3,0 100 2
i 20190508164002 15.976 ± 0.036 3,0 100 2
i 20190509140533 15.96 ± 0.050 3,0 100 2
i 20190720124743 15.935 ± 0.061 3,0 100 2
i 20200513190610 15.962 ± 0.032 3,0 100 2
i 20200524153441 16.120 ± 0.044 0,0 10 2
i 20210407183626 15.967 ± 0.039 0,0 10 2
i 20210411183047 16.100 ± 0.049 0,0 10 2
z 20140719115035 15.536 ± 0.036 0,0 20 2
z 20140722114259 15.466 ± 0.032 0,0 20 2
z 20150901084353 15.484 ± 0.027 3,0 100 2
z 20160420172420 15.506 ± 0.031 0,0 20 2
z 20180605125833 15.591 ± 0.041 0,0 20 2
z 20190505170726 15.498 ± 0.030 3,0 100 2
z 20190508164202 15.506 ± 0.029 3,0 100 2
z 20190509140733 15.508 ± 0.053 3,0 100 2
z 20190720124943 15.470 ± 0.058 3,0 100 2
z 20200513190811 15.485 ± 0.036 3,0 100 2
z 20200524153511 15.571 ± 0.043 1,9 20 3
z 20210407183658 15.512 ± 0.036 0,0 20 2
z 20210411183118 15.570 ± 0.039 1,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.01 4.21
GAIA source ID 4121034044140278400 4121034044109514112
Bp mag. 17.609 21.549
G mag. 16.579 20.504
Rp mag. 15.586 19.981
Bp/Rp excess 1.332 0.958
Parallax (mas) 0.114 ± 0.075 -1.492 ± 1.797
PM RA (mas/yr) -2.438 ± 0.077 -7.731 ± 1.789
PM Dec (mas/yr) -9.812 ± 0.060 -5.390 ± 1.290
A.E.N. (mas) 0.092 ± 0.492 1.799 ± 0.716

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 16.840 ± 0.002
i -- ± --
z -- ± --
Y -- ± --
J 14.039 ± 0.019
H 13.257 ± 0.02
K 13.059 ± 0.026
W1 12.961 ± 0.014
W2 13.101 ± 0.011
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.