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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 2275599574 (SMSS J172115.57-201505.4)

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Data releaseDR4
RA (deg)260.3149
Dec (deg)-20.2515
Galactic lon. (deg)4.3496
Galactic lat. (deg)9.3401
E(B-V) (SFD98) (mag)0.468
E(B-V) (GNILC) (mag)0.392 ± 0.017
Nearest DR4 source 184980974 (3.2 arcs away)
2nd-nearest DR4 source 2275599598 (5.9 arcs away)
3rd-nearest DR4 source 184980968 (8.8 arcs away)
Times observed5
Total bad pixels0
Observing flags19

Magnitudes

Filter u v g r i z
PSF mag. 16.847 ± -- 17.002 ± 0.052 16.409 ± 0.032 16.138 ± 0.025
Petrosian mag. 16.779 ± -- 17.062 ± 0.071 16.533 ± 0.050 16.348 ± 0.042

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 20190822092753 17.452 ± 0.038 17,0 100 2
r 20140626130951 17.004 ± 0.053 3,0 5 2
r 20180718115528 16.376 ± 0.037 19,0 100 2
r 20190822092953 16.688 ± 0.034 19,0 100 2
i 20140626131016 16.410 ± 0.045 3,0 10 2
i 20160420170134 16.387 ± 0.046 3,0 10 2
i 20180718120132 16.466 ± 0.046 19,0 100 2
z 20140626131048 16.195 ± 0.041 3,0 20 2
z 20160420170204 16.154 ± 0.043 3,0 20 2
z 20180718120334 16.188 ± 0.046 19,0 100 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.18 3.03
GAIA source ID 4121948940873746816 4121948940827520768
Bp mag. 17.705 --
G mag. 16.969 20.074
Rp mag. 16.131 --
Bp/Rp excess 1.279 --
Parallax (mas) -0.011 ± 0.094 0.424 ± 0.910
PM RA (mas/yr) -3.832 ± 0.100 -3.911 ± 0.860
PM Dec (mas/yr) -4.433 ± 0.065 -4.414 ± 0.627
A.E.N. (mas) 0.0 ± 0.000 0.826 ± 0.434

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 17.991 ± 0.003
r 17.108 ± 0.002
i 16.637 ± 0.002
z 16.376 ± 0.002
Y -- ± --
J 14.953 ± 0.051
H 14.325 ± 0.041
K 14.165 ± 0.007
W1 13.272 ± 0.015
W2 13.385 ± 0.015
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.