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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179900650 (SMSS J172818.64-203630.2)

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Data releaseDR4
RA (deg)262.0777
Dec (deg)-20.6084
Galactic lon. (deg)4.9633
Galactic lat. (deg)7.7628
E(B-V) (SFD98) (mag)0.862
E(B-V) (GNILC) (mag)0.742 ± 0.036
Nearest DR4 source 179900600 (8.8 arcs away)
2nd-nearest DR4 source 179900627 (9.4 arcs away)
3rd-nearest DR4 source 179900599 (11.2 arcs away)
Times observed40
Total bad pixels1
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 18.14 ± 0.013 17.192 ± 0.012 16.469 ± 0.009 16.094 ± 0.011
Petrosian mag. — — 18.184 ± 0.023 17.260 ± 0.030 16.544 ± 0.025 16.212 ± 0.024

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 20140722114132 17.992 ± 0.086 0,0 5 2
g 20160420172300 18.198 ± 0.141 0,0 5 2
g 20190505165725 18.122 ± 0.031 0,0 100 2
g 20190506165109 18.167 ± 0.027 0,0 100 2
g 20190507143127 18.157 ± 0.048 0,0 100 2
g 20190822094124 18.125 ± 0.030 3,0 100 2
r 20140719114939 17.294 ± 0.073 0,0 5 2
r 20140722114203 17.250 ± 0.062 0,0 5 2
r 20160420172325 17.277 ± 0.073 0,0 5 2
r 20180605125736 17.219 ± 0.083 0,0 5 2
r 20190505165926 17.188 ± 0.032 0,0 100 2
r 20190506165309 17.196 ± 0.031 0,0 100 2
r 20190507143327 17.176 ± 0.047 3,0 100 2
r 20190822094324 17.195 ± 0.031 3,0 100 2
r 20200524153415 17.329 ± 0.087 0,0 5 2
r 20210407183558 17.414 ± 0.085 512,0 5 2
i 20140719115004 16.481 ± 0.045 0,0 10 2
i 20140722114229 16.506 ± 0.047 0,0 10 2
i 20150901084153 16.493 ± 0.031 0,0 100 2
i 20160420172350 16.437 ± 0.046 0,0 10 2
i 20180605125802 16.443 ± 0.057 0,0 10 2
i 20190505170526 16.470 ± 0.032 0,0 100 2
i 20190508164002 16.505 ± 0.039 0,0 100 2
i 20190509140533 16.459 ± 0.051 2,1 100 2
i 20190720124743 16.452 ± 0.062 1,0 100 2
i 20200513190610 16.496 ± 0.035 0,0 100 2
i 20200524153441 16.493 ± 0.053 0,0 10 2
i 20210407183626 16.463 ± 0.050 0,0 10 2
i 20210411183047 16.520 ± 0.061 0,0 10 2
z 20140719115035 16.101 ± 0.046 0,0 20 2
z 20140722114259 16.080 ± 0.040 0,0 20 2
z 20150901084353 16.096 ± 0.030 0,0 100 2
z 20160420172420 16.132 ± 0.043 0,0 20 2
z 20180605125833 16.243 ± 0.061 0,0 20 2
z 20190505170726 16.083 ± 0.033 0,0 100 2
z 20190508164202 16.125 ± 0.033 0,0 100 2
z 20190509140733 16.109 ± 0.055 0,0 100 2
z 20190720124943 16.043 ± 0.059 0,0 100 2
z 20200513190811 16.071 ± 0.041 0,0 100 2
z 20200524153511 16.129 ± 0.057 0,0 20 3
z 20210407183658 16.171 ± 0.051 0,0 20 2
z 20210411183118 16.170 ± 0.054 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.14 3.37
GAIA source ID 4121022288746553600 4121022293072291328
Bp mag. 17.979 20.384
G mag. 17.054 20.105
Rp mag. 16.116 18.586
Bp/Rp excess 1.308 2.267
Parallax (mas) 0.520 ± 0.116 -- ± --
PM RA (mas/yr) -0.607 ± 0.100 -- ± --
PM Dec (mas/yr) 0.132 ± 0.087 -- ± --
A.E.N. (mas) 0.175 ± 1.013 12.154 ± 45.427

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r 17.231 ± 0.002
i -- ± --
z -- ± --
Y -- ± --
J 14.789 ± 0.031
H 14.148 ± 0.035
K 13.907 ± 0.039
W1 13.823 ± 0.016
W2 14.088 ± 0.024
W3 12.386 ± --
W4 8.347 ± --
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.