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Latest Details
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Name
  AF Sco  
AAVSO UID
000-BBY-014 (242 observations)  
Constellation
Scorpius Sequence
J2000.0
16 50 25.59 -25 33 37.7  (252.60663 -25.56047) Search nearby
B1950.0 16 47 21.48 -25 28 31.2
Proper motion
RA: 3.4 +/- 2.4 mas/yDec: -8.9 +/- 3.3 mas/ySource: UCAC4
Galactic coord. 355.744 +11.992
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1644-25A AN 260.1904 ASAS J165026-2533.6
ASASSN-V J165025.48-253337.8 Downes AF Sco HV 1108
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Variability type
M
Spectral type M9III
Mag. range
11.5 V - 17.5 p
Discoverer Henrietta Leavitt (1904)
Epoch
22 Jul 1899 (HJD 2414858) Ephemeris
Outburst --
Period 400 d
Rise/eclipse dur. --
Remarks
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
2 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
3 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
4 H.W. Duerbeck, 1995, IBVS 4219 1995IBVS.4219....1D
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1995IBVS.4219....1D
6 H.H.Swope, HB N887, 1932. 1932BHarO.887....6S
7 Dunér, N. C.; Hartwig, E.; Muller, G., 1911, Benennung von neu entdeckten
veränderlichen Sternen
1911AN....190...57.
8 H.S.Leavitt, HC N90, 1904. 1904HarCi..90....1L
External Links
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Location    Go   
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 5.49H = 4.58K = 3.88J - K = 1.60
AllWISE W3 = -0.04W4 = -1.07W3 - W4 = 1.04
APASS-DR9 B = 16.06V = 14.39g' = 15.66r' = 12.47B - V = 1.66
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 16 50 25.59 -25 33 37.7 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Fernig, Leo 2022-11-15 22:32 UTC Discoverer updated from 1911AN....190...57. page 67.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-03-13 01:50 UTC Update from [1995IBVS.4219....1D].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.