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Object IDs in DR1 differ from DR2 and later releases.

DR4: Object 179821256 (SMSS J172720.22-204959.8)

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Data releaseDR4
RA (deg)261.8343
Dec (deg)-20.8333
Galactic lon. (deg)4.6478
Galactic lat. (deg)7.8316
E(B-V) (SFD98) (mag)0.983
E(B-V) (GNILC) (mag)0.903 ± 0.044
Nearest DR4 source 179821253 (6.6 arcs away)
2nd-nearest DR4 source 179821255 (7.1 arcs away)
3rd-nearest DR4 source 179821254 (9.3 arcs away)
Times observed38
Total bad pixels4
Observing flags3

Magnitudes

Filter u v g r i z
PSF mag. — — 17.619 ± 0.018 16.764 ± 0.011 16.028 ± 0.011 15.634 ± 0.012
Petrosian mag. — — 17.509 ± 0.056 16.852 ± 0.022 16.076 ± 0.044 15.740 ± 0.023

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 20140719114908 17.678 ± 0.068 0,0 5 2
g 20140722114132 17.622 ± 0.064 0,0 5 2
g 20140729111106 17.505 ± 0.055 0,0 5 2
g 20160420170043 17.741 ± 0.103 0,0 5 2
g 20180605124544 17.639 ± 0.076 0,0 5 2
g 20190506165109 17.603 ± 0.025 2,0 100 2
g 20190507143127 17.704 ± 0.024 0,0 100 2
g 20190822094124 17.656 ± 0.027 0,0 100 2
g 20210407183532 17.475 ± 0.069 0,0 5 2
r 20140719114939 16.776 ± 0.046 0,0 5 2
r 20140722114203 16.748 ± 0.044 0,0 5 2
r 20140729111131 16.728 ± 0.041 0,0 5 2
r 20160420170109 16.734 ± 0.052 0,0 5 2
r 20190506165309 16.760 ± 0.027 3,0 100 2
r 20190507143327 16.759 ± 0.034 3,0 100 2
r 20190822094324 16.762 ± 0.029 2,0 100 2
r 20200524153415 16.719 ± 0.058 0,0 5 2
r 20210407183558 16.845 ± 0.057 0,0 5 2
i 20140719115004 16.046 ± 0.035 0,0 10 2
i 20140722114229 16.023 ± 0.036 0,0 10 2
i 20140729111202 15.957 ± 0.034 0,0 10 2
i 20150901084153 16.005 ± 0.030 1,0 100 2
i 20150901084554 16.017 ± 0.028 3,0 100 2
i 20160420170134 15.982 ± 0.034 0,4 10 2
i 20180605124636 16.014 ± 0.042 0,0 10 2
i 20190508164002 16.135 ± 0.028 1,0 100 2
i 20200524153441 16.073 ± 0.043 0,0 10 2
i 20210407183626 16.028 ± 0.040 0,0 10 2
z 20140719115035 15.713 ± 0.036 0,0 20 2
z 20140722114259 15.590 ± 0.033 0,0 20 2
z 20140729111235 15.617 ± 0.034 0,0 20 2
z 20150901084353 15.604 ± 0.032 0,0 100 2
z 20150901084754 15.600 ± 0.029 0,0 100 2
z 20160420170204 15.622 ± 0.032 0,0 20 2
z 20180605124707 15.627 ± 0.039 0,0 20 2
z 20190508164202 15.611 ± 0.027 2,0 100 2
z 20200513183957 15.623 ± 0.032 2,0 100 2
z 20200524153511 15.688 ± 0.045 0,0 20 3
z 20210407183658 15.644 ± 0.038 0,0 20 2

Gaia DR3 data
Matching radius: 15"

Best match Second match
Distance (arcsec) 0.15 1.5
GAIA source ID 4121011332353971328 4121011332320117120
Bp mag. 17.506 --
G mag. 16.692 19.591
Rp mag. 15.696 --
Bp/Rp excess 1.396 --
Parallax (mas) 0.835 ± 0.060 1.572 ± 0.546
PM RA (mas/yr) 0.725 ± 0.074 2.635 ± 0.693
PM Dec (mas/yr) 2.251 ± 0.050 -5.315 ± 0.460
A.E.N. (mas) 0.0 ± 0.0 2.232 ± 6.138

UV to IR data
Matching radius: 2"

Filter Magnitude1
FUV -- ± --
NUV -- ± --
u -- ± --
g 17.856 ± 0.003
r 16.799 ± 0.001
i 16.147 ± 0.002
z 15.808 ± 0.002
Y -- ± --
J 14.318 ± 0.034
H 13.809 ± 0.03
K 13.592 ± 0.047
W1 13.335 ± 0.018
W2 13.44 ± 0.016
W3 12.445 ± --
W4 8.838 ± --
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.