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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 184980996 (SMSS J172117.11-201436.1)

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Data releaseDR4
RA (deg)260.3214
Dec (deg)-20.2434
Galactic lon. (deg)4.3598
Galactic lat. (deg)9.3395
E(B-V) (SFD98) (mag)0.468
E(B-V) (GNILC) (mag)0.392 ± 0.017
Nearest DR4 source 184980993 (10.2 arcs away)
2nd-nearest DR4 source 2275599621 (10.4 arcs away)
Times observed35
Total bad pixels14
Observing flags0

Magnitudes

Filter u v g r i z
PSF mag. 18.231 ± 0.186 17.880 ± 0.099 15.765 ± 0.036 15.067 ± 0.035 14.552 ± 0.033 14.3 ± 0.039
Petrosian mag. 18.166 ± 0.128 17.796 ± 0.060 15.659 ± 0.013 15.013 ± 0.015 14.476 ± 0.014 14.241 ± 0.018

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)
u 20180718115729 18.267 ± 0.056 0,4 100 2
v 20140626130839 17.992 ± 0.151 0,0 20 1
v 20180718115931 17.892 ± 0.038 0,0 100 1
g 20140626130919 15.831 ± 0.029 0,0 5 2
g 20140627130802 15.809 ± 0.031 0,0 5 2
g 20140719114131 15.849 ± 0.029 0,0 5 2
g 20160420170043 15.872 ± 0.031 0,0 5 2
g 20180315174626 15.841 ± 0.036 0,3 5 2
g 20180801105218 15.850 ± 0.040 0,0 100 2
g 20200224174822 15.851 ± 0.045 0,0 100 2
g 20200524153348 15.848 ± 0.040 0,0 5 3
g 20210407183532 15.867 ± 0.029 0,0 5 2
r 20140626130951 15.109 ± 0.029 0,0 5 2
r 20140627130827 15.132 ± 0.028 0,0 5 2
r 20140719114202 15.149 ± 0.031 0,0 5 2
r 20160420170109 15.126 ± 0.019 0,1 5 2
r 20180315174652 15.152 ± 0.032 0,3 5 2
r 20180801105419 15.148 ± 0.045 0,0 100 2
r 20180802115408 15.139 ± 0.040 0,25 100 2
r 20200524153415 15.133 ± 0.034 0,0 5 2
r 20210407183558 15.170 ± 0.032 0,0 5 2
i 20140626131016 14.583 ± 0.032 0,0 10 2
i 20140627130852 14.609 ± 0.030 0,0 10 2
i 20140719114228 14.635 ± 0.026 0,0 10 2
i 20150831085034 14.632 ± 0.037 0,0 100 2
i 20160420170134 14.594 ± 0.029 0,0 10 2
i 20180315174718 14.629 ± 0.032 0,0 10 2
i 20190416152010 14.656 ± 0.033 0,0 100 2
i 20190806103155 14.639 ± 0.033 24,23 100 2
i 20200524153441 14.648 ± 0.032 0,0 10 2
i 20210407183626 14.636 ± 0.027 0,0 10 2
z 20140626131048 14.333 ± 0.024 0,0 20 2
z 20140627130923 14.352 ± 0.032 0,0 20 2
z 20140719114300 14.348 ± 0.025 0,0 20 2
z 20160420170204 14.344 ± 0.021 0,3 20 2
z 20180315174748 14.355 ± 0.031 0,0 20 2
z 20190416152212 14.371 ± 0.039 0,0 100 2
z 20190806103356 14.391 ± 0.033 24,23 100 2
z 20200524153511 14.391 ± 0.030 0,0 20 3
z 20210407183658 14.400 ± 0.027 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.93 1.08
GAIA source ID 4121972408539966336 4121972408576198656
Bp mag. -- 16.335
G mag. 15.996 15.635
Rp mag. -- 14.712
Bp/Rp excess -- 1.365
Parallax (mas) 1.017 ± 0.065 -0.169 ± 0.050
PM RA (mas/yr) -0.682 ± 0.066 0.765 ± 0.051
PM Dec (mas/yr) -4.661 ± 0.044 -2.912 ± 0.034
A.E.N. (mas) 0.149 ± 2.156 0.030 ± 0.136

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g -- ± --
r -- ± --
i -- ± --
z 14.439 ± 0.002
Y -- ± --
J 13.304 ± 0.04
H 12.728 ± 0.042
K 12.533 ± 0.032
W1 12.235 ± 0.011
W2 12.369 ± 0.01
W3 11.829 ± --
W4 8.817 ± --
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.