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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179909140 (SMSS J172801.63-202619.9)

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Data releaseDR4
RA (deg)262.007
Dec (deg)-20.439
Galactic lon. (deg)5.071
Galactic lat. (deg)7.911
E(B-V) (SFD98) (mag)0.814
E(B-V) (GNILC) (mag)0.615 ± 0.023
Nearest DR4 source 179909141 (4.2 arcs away)
2nd-nearest DR4 source 179909131 (7.0 arcs away)
3rd-nearest DR4 source 179909132 (8.7 arcs away)
Times observed36
Total bad pixels2
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 17.287 ± 0.024 16.252 ± 0.018 15.462 ± 0.014 15.013 ± 0.014
Petrosian mag. — — 16.991 ± 0.043 16.098 ± 0.042 15.343 ± 0.027 14.931 ± 0.035

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 17.281 ± 0.056 0,0 5 2
g 20140729111106 17.284 ± 0.049 0,0 5 2
g 20160420172300 17.259 ± 0.068 0,0 5 2
g 20190505165725 17.265 ± 0.033 0,0 100 2
g 20190507143127 17.287 ± 0.044 0,0 100 2
g 20190822094124 17.267 ± 0.038 3,0 100 2
g 20200524153348 17.267 ± 0.081 0,0 5 3
g 20210407183532 17.370 ± 0.064 0,0 5 2
r 20140719114939 16.313 ± 0.042 0,0 5 2
r 20140729111131 16.229 ± 0.034 2,0 5 2
r 20160420172325 16.265 ± 0.036 0,1 5 2
r 20190505165926 16.280 ± 0.038 0,0 100 2
r 20190507143327 16.264 ± 0.045 0,0 100 2
r 20190822094324 16.250 ± 0.041 3,0 100 2
r 20200524153415 16.288 ± 0.048 0,0 5 2
r 20210407183558 16.273 ± 0.046 0,0 5 2
i 20140719115004 15.451 ± 0.035 0,0 10 2
i 20140729111202 15.481 ± 0.032 2,0 10 2
i 20150901084554 15.475 ± 0.032 0,0 100 2
i 20160420172350 15.473 ± 0.027 0,0 10 2
i 20190505170526 15.468 ± 0.037 0,0 100 2
i 20190508164002 15.469 ± 0.035 0,0 100 2
i 20190509140533 15.466 ± 0.05 0,0 100 2
i 20190720124743 15.450 ± 0.071 2,0 100 2
i 20200513190610 15.486 ± 0.032 0,0 100 2
i 20200524153441 15.465 ± 0.036 0,0 10 2
i 20210407183626 15.473 ± 0.034 0,0 10 2
z 20140719115035 14.994 ± 0.034 0,0 20 2
z 20140729111235 15.008 ± 0.033 2,0 20 2
z 20150901084754 15.021 ± 0.032 0,0 100 2
z 20160420172420 15.033 ± 0.032 2,1 20 2
z 20190505170726 15.013 ± 0.035 0,0 100 2
z 20190508164202 15.009 ± 0.028 0,0 100 2
z 20190509140733 15.014 ± 0.053 0,0 100 2
z 20190720124943 15.003 ± 0.064 0,0 100 2
z 20200513190811 15.021 ± 0.035 0,0 100 2
z 20200524153511 15.003 ± 0.035 0,0 20 3
z 20210407183658 15.033 ± 0.035 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.37 3.57
GAIA source ID 4121062455279100544 4121062390929674880
Bp mag. 17.122 20.582
G mag. 16.103 20.322
Rp mag. 15.113 18.951
Bp/Rp excess 1.331 2.058
Parallax (mas) 0.233 ± 0.068 -- ± --
PM RA (mas/yr) -2.955 ± 0.088 -- ± --
PM Dec (mas/yr) -0.417 ± 0.052 -- ± --
A.E.N. (mas) 0.098 ± 0.877 0.893 ± 0.252

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 16.374 ± 0.003
i -- ± --
z -- ± --
Y -- ± --
J 13.556 ± 0.025
H 12.803 ± 0.024
K 12.658 ± 0.026
W1 12.431 ± 0.013
W2 12.639 ± 0.012
W3 12.354 ± --
W4 8.471 ± --
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.