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Latest Details
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Name
  MACHO 102.22859.31  
AAVSO UID
000-BKV-945 (No observations)  
Constellation
Sagittarius Sequence
J2000.0
18 09 39.15 -27 30 09.6  (272.41312 -27.50267) Search nearby
B1950.0 18 06 30.59 -27 30 44.3
Proper motion
RA: 16.7 +/- 3.6 mas/yDec: -13.5 +/- 11.6 mas/ySource: UCAC4
Galactic coord. 3.892 -3.867
Other names

(Internal only)
2MASS J18093915-2730095 AKARI-IRC-V1 J1809392-273009 ASAS J180939-2730.2
ASASSN-V J180939.19-273008.3    
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Variability type
M
Spectral type --
Mag. range
11.0: - 15.4 Rc
Discoverer Klaus Bernhard, Stefan Hümmerich
Epoch
27 Feb 2008 (HJD 2454524) Ephemeris
Outburst --
Period 267 d
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Otero, Sebastian Alberto VSP Note: Two bright close companions, a 13.4 mag. star 7" to the N and a 14.1 mag. star 8" to the S.
2 Hümmerich, Stefan Positional data was taken from 2MASS. J-K = 1.451 (2MASS). Very crowded area. ASAS-3 V magnitudes contaminated by several nearby stars, specially UCAC4 313-161817 (V= 13.4; sep. 7'') and UCAC4 313-161824 (V= 14.1; sep. 8"). Range in V: 13.0-<15.9 (from ASAS-3 and CMC14) has been corrected but is approximate. Period derived from combination of MACHO and ASAS-3 data.
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References
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1 R.A. Allsman, T.S. Axelrod, 2001, arXiv:astro-ph/0108444 (MACHO online
data)		 2001astro.ph..8444A
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 = 8.12H = 7.18K = 6.67J - K = 1.45
AllWISE W1 = 6.66W2 = 6.29W3 = 5.29W4 = 4.32W1 - W2 = 0.37W3 - W4 = 0.97
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 18 09 39.15 -27 30 09.6 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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1 MACHO 102.22859.31 / ASAS J180939-2730.2 - phase plot Hümmerich, Stefan 2013-02-01 21:31 UTC Phase plot based on MACHO Rc data (red) and ASAS V data (black). ASAS V has been deblended and shifted to match MACHO Rc.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
1 Hümmerich, Stefan 2013-02-02 00:58 UTC Initial submission.

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