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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 184981255 (SMSS J172115.42-201414.0)

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Data releaseDR4
RA (deg)260.3142
Dec (deg)-20.2373
Galactic lon. (deg)4.3612
Galactic lat. (deg)9.3485
E(B-V) (SFD98) (mag)0.468
E(B-V) (GNILC) (mag)0.392 ± 0.017
Nearest DR4 source 2275600216 (9.2 arcs away)
2nd-nearest DR4 source 2275599626 (9.6 arcs away)
3rd-nearest DR4 source 184981254 (11.7 arcs away)
Times observed35
Total bad pixels5
Observing flags0

Magnitudes

Filter u v g r i z
PSF mag. 19.002 ± 0.156 19.218 ± 0.086 15.849 ± 0.009 14.812 ± 0.01 14.019 ± 0.009 13.601 ± 0.011
Petrosian mag. 18.882 ± 0.182 19.202 ± 0.163 15.830 ± 0.023 14.830 ± 0.009 14.038 ± 0.009 13.632 ± 0.012

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 20180718114922 19.260 ± 0.144 16,0 100 1
u 20180718115729 19.096 ± 0.112 0,0 100 2
v 20180718115124 19.110 ± 0.097 16,0 100 1
v 20180718115931 19.332 ± 0.116 0,0 100 1
g 20140626130919 15.873 ± 0.029 0,0 5 2
g 20140627130802 15.874 ± 0.031 0,0 5 2
g 20140719114131 15.824 ± 0.028 0,0 5 2
g 20160420170043 15.862 ± 0.031 0,0 5 2
g 20180315174626 15.846 ± 0.036 0,2 5 2
g 20180718115326 15.859 ± 0.038 16,0 100 2
g 20180801105218 15.846 ± 0.040 0,0 100 2
g 20190822092753 15.851 ± 0.037 16,0 100 2
g 20200224174822 15.837 ± 0.045 0,0 100 2
g 20200524153348 15.840 ± 0.040 0,0 5 3
g 20210407183532 15.880 ± 0.029 0,0 5 2
r 20140626130951 14.802 ± 0.028 0,0 5 2
r 20140627130827 14.803 ± 0.027 0,0 5 2
r 20140719114202 14.800 ± 0.030 0,0 5 2
r 20160420170109 14.810 ± 0.017 0,0 5 2
r 20180315174652 14.822 ± 0.031 0,3 5 2
r 20180718115528 14.822 ± 0.037 16,0 100 2
r 20180801105419 14.816 ± 0.045 0,0 100 2
r 20180802115408 14.823 ± 0.040 0,0 100 2
r 20190822092953 14.825 ± 0.033 16,0 100 2
r 20200524153415 14.780 ± 0.032 0,0 5 2
r 20210407183558 14.838 ± 0.031 0,0 5 2
i 20140626131016 14.026 ± 0.031 0,0 10 2
i 20140627130852 14.019 ± 0.029 0,0 10 2
i 20140719114228 14.016 ± 0.025 0,0 10 2
i 20150831085034 14.022 ± 0.036 0,0 100 2
i 20160420170134 14.022 ± 0.028 0,0 10 2
i 20180315174718 14.012 ± 0.031 0,0 10 2
i 20180718120132 14.031 ± 0.045 16,0 100 2
i 20190416152010 14.020 ± 0.033 0,0 100 2
i 20200524153441 13.991 ± 0.030 0,0 10 2
i 20210407183626 14.020 ± 0.026 0,0 10 2
z 20140626131048 13.608 ± 0.024 0,0 20 2
z 20140627130923 13.593 ± 0.031 0,0 20 2
z 20140719114300 13.589 ± 0.024 0,0 20 2
z 20160420170204 13.599 ± 0.019 0,0 20 2
z 20180315174748 13.597 ± 0.030 0,0 20 2
z 20180718120334 13.621 ± 0.043 16,0 100 2
z 20190416152212 13.593 ± 0.038 0,0 100 2
z 20200524153511 13.599 ± 0.028 0,0 20 3
z 20210407183658 13.62 ± 0.025 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.15 2.7
GAIA source ID 4121972614734657280 4121972614734660608
Bp mag. 15.689 --
G mag. 14.674 20.664
Rp mag. 13.682 --
Bp/Rp excess 1.334 --
Parallax (mas) 0.118 ± 0.035 -- ± --
PM RA (mas/yr) -2.792 ± 0.036 -- ± --
PM Dec (mas/yr) -0.280 ± 0.023 -- ± --
A.E.N. (mas) 0.0 ± 0.0 0.0 ± 0.0

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 16.200 ± 0.002
r 14.814 ± 0.003
i 14.163 ± 0.001
z 13.775 ± 0.001
Y -- ± --
J 12.234 ± 0.023
H 11.371 ± 0.023
K 11.156 ± 0.023
W1 11.025 ± 0.014
W2 11.169 ± 0.01
W3 11.124 ± 0.158
W4 8.575 ± 0.376
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.