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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179900626 (SMSS J172817.79-203615.6)

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Data releaseDR4
RA (deg)262.0741
Dec (deg)-20.6044
Galactic lon. (deg)4.9648
Galactic lat. (deg)7.7678
E(B-V) (SFD98) (mag)0.862
E(B-V) (GNILC) (mag)0.742 ± 0.036
Nearest DR4 source 179900625 (3.1 arcs away)
2nd-nearest DR4 source 179900624 (6.5 arcs away)
3rd-nearest DR4 source 179900623 (7.1 arcs away)
Times observed14
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 19.291 ± 0.117 18.696 ± 0.095 18.334 ± 0.027 18.029 ± 0.032
Petrosian mag. — — 19.271 ± 0.077 18.548 ± 0.062 18.194 ± 0.140 18.507 ± 0.232

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 19.472 ± 0.059 2,0 100 2
g 20190506165109 19.339 ± 0.050 2,0 100 2
g 20190507143127 19.537 ± 0.080 0,0 100 2
r 20190505165926 18.830 ± 0.062 3,0 100 2
r 20190506165309 18.700 ± 0.055 3,0 100 2
r 20190507143327 18.571 ± 0.066 3,0 100 2
r 20190822094324 18.776 ± 0.056 3,0 100 2
i 20150901084153 18.479 ± 0.084 3,0 100 2
i 20190505170526 18.101 ± 0.061 3,0 100 2
i 20190509140533 18.314 ± 0.085 0,0 100 2
i 20190720124743 18.294 ± 0.089 3,0 100 2
i 20200513190610 18.461 ± 0.108 0,0 100 2
z 20150901084353 18.201 ± 0.111 0,0 100 2
z 20190505170726 18.194 ± 0.115 0,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.37 3.21
GAIA source ID 4121022288758249728 4121022293072350592
Bp mag. 19.416 19.874
G mag. 18.678 19.072
Rp mag. 17.864 18.386
Bp/Rp excess 1.258 1.139
Parallax (mas) 0.488 ± 0.272 0.171 ± 0.337
PM RA (mas/yr) -3.787 ± 0.267 -1.557 ± 0.334
PM Dec (mas/yr) -6.857 ± 0.201 -5.875 ± 0.256
A.E.N. (mas) 0.422 ± 0.820 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 18.779 ± 0.004
i -- ± --
z -- ± --
Y -- ± --
J 16.697 ± 0.021
H -- ± --
K 16.120 ± 0.042
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.