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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 184980974 (SMSS J172115.73-201504.8)

Find on Search these coordinates on SIMBAD   

Data releaseDR4
RA (deg)260.3158
Dec (deg)-20.2513
Galactic lon. (deg)4.3502
Galactic lat. (deg)9.3395
E(B-V) (SFD98) (mag)0.468
E(B-V) (GNILC) (mag)0.392 ± 0.017
Nearest DR4 source 2275599574 (3.2 arcs away)
2nd-nearest DR4 source 2275599598 (6.7 arcs away)
3rd-nearest DR4 source 2275599617 (9.9 arcs away)
Times observed32
Total bad pixels0
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — 18.419 ± 0.336 16.763 ± 0.071 16.343 ± 0.08 15.896 ± 0.083 15.776 ± 0.073
Petrosian mag. — 18.083 ± 0.108 16.524 ± 0.044 15.982 ± 0.070 15.599 ± 0.081 15.393 ± 0.124

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)
v 20180718115124 18.692 ± 0.069 16,0 100 1
v 20180718115931 18.770 ± 0.072 0,0 100 1
v 20210406183607 18.647 ± 0.118 16,0 100 1
g 20140626130919 16.981 ± 0.045 0,0 5 2
g 20140627130802 17.043 ± 0.049 0,0 5 2
g 20140719114131 17.019 ± 0.046 0,0 5 2
g 20160420170043 17.006 ± 0.059 0,0 5 2
g 20180315174626 16.985 ± 0.050 0,0 5 2
g 20180718115326 17.045 ± 0.038 17,0 100 2
g 20180801105218 16.977 ± 0.041 3,0 100 2
g 20200224174822 16.952 ± 0.045 3,0 100 2
g 20200524153348 16.879 ± 0.079 0,0 5 3
g 20210407183532 17.020 ± 0.056 0,0 5 2
r 20140626130951 16.544 ± 0.042 3,0 5 2
r 20140627130827 16.342 ± 0.041 0,0 5 2
r 20140719114202 16.331 ± 0.043 0,0 5 2
r 20160420170109 16.297 ± 0.037 0,0 5 2
r 20180315174652 16.344 ± 0.041 0,0 5 2
r 20180801105419 16.317 ± 0.046 3,0 100 2
r 20180802115408 16.299 ± 0.040 3,0 100 2
r 20200524153415 16.276 ± 0.052 1,0 5 2
r 20210407183558 16.383 ± 0.049 0,0 5 2
i 20140626131016 16.047 ± 0.039 3,0 10 2
i 20140627130852 15.811 ± 0.037 1,0 10 2
i 20140719114228 15.805 ± 0.035 1,0 10 2
i 20150831085034 15.817 ± 0.038 3,0 100 2
i 20160420170134 16.020 ± 0.039 3,0 10 2
i 20180315174718 15.848 ± 0.038 1,0 10 2
i 20180718120132 16.034 ± 0.045 19,0 100 2
i 20200524153441 15.82 ± 0.043 1,0 10 2
i 20210407183626 15.856 ± 0.038 0,0 10 2
z 20140626131048 15.835 ± 0.034 3,0 20 2
z 20140627130923 15.599 ± 0.038 1,0 20 2
z 20140719114300 15.512 ± 0.033 1,0 20 2
z 20160420170204 15.770 ± 0.034 3,0 20 2
z 20180315174748 15.535 ± 0.036 1,0 20 2
z 20180718120334 15.820 ± 0.044 19,0 100 2
z 20200524153511 15.582 ± 0.044 1,0 20 3
z 20210407183658 15.566 ± 0.038 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.27 1.48
GAIA source ID 4121948936551936000 4121948940827520768
Bp mag. 17.175 --
G mag. 16.545 20.074
Rp mag. 15.756 --
Bp/Rp excess 1.277 --
Parallax (mas) 0.031 ± 0.075 0.424 ± 0.910
PM RA (mas/yr) -3.295 ± 0.079 -3.911 ± 0.860
PM Dec (mas/yr) -3.651 ± 0.052 -4.414 ± 0.627
A.E.N. (mas) 0.0 ± 0.0 0.826 ± 0.434

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 17.351 ± 0.002
r 16.652 ± 0.002
i 16.232 ± 0.002
z 16.020 ± 0.002
Y -- ± --
J 14.778 ± 0.08
H 14.216 ± 0.088
K 14.047 ± 0.006
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.