AAVSO Home



Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
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    
(Not logged in)  Add name
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.
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 R.A. Allsman, T.S. Axelrod, 2001, arXiv:astro-ph/0108444 (MACHO online
data)		 2001astro.ph..8444A
External Links
Links open in a new window. Not all links may be valid for this particular target.
Location    Go   
Select a Location for more details.
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.
Image not downloaded. Click Retrieve Image to download and view. Retrieve image
Supporting Documents
Click document name to open or save. Browser plug-in or other software may be required for viewing.
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.
(Not logged in)  Add document
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.

Guidelines    FAQ    Manual    Forum    Variability Types    Passbands    Copyright    Acknowledgments    Privacy    Contact    Help us   
The International Variable Star Index
© 2005-2025 American Association of Variable Star Observers (AAVSO)
Version 1.1 [C]
172.30.1.224