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
  V1223 Sgr  
AAVSO UID
000-BCX-045 (12633 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 55 02.31 -31 09 49.5  (283.75963 -31.16375) Search nearby
B1950.0 18 51 49.21 -31 13 39.9
Proper motion
RA: 2.2 +/- 1.3 mas/yDec: -22.4 +/- 1.3 mas/ySource: UCAC4
Galactic coord. 4.958 -14.355
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1RXS J185502.1-310951 2MASS J18550231-3109495 3A 1851-312
AAVSO 1848-31 Downes V1223 Sgr X 18518-312
(Not logged in)  Add name
Variability type
DQ
Spectral type pec(e+cont)
Mag. range
12.3 - <16.8 V
Discoverer --
Epoch
--
Outburst --
Period 0.140244 d  (3.3659 h)
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 Short duration flares. UG?
2 2009arXiv0910.0954S White dwarf spin period = 746 seconds.
3 GCVS Team As a rule has a persistent high state; five drops by two to more than three magnitudes have been registered and a twelve year interval of irregular variations at intermediate magnitudes. According to [B.Warner, M.Cropper, MN 206, N2, 261, 1984.] there are slow variations in brightness by 0.15m on a time scale of ~1 day. They are superimposed by variations with the orbital period P orb (Max = 2444749.9866 + 0.140239d*E) and with amplitude up to 0.15m. These variations in their turn are superimposed by the others: with P = 794.38s and the amplitude from 0.03m up to 0.15m (Max = 2444750.00404 + 0.009194215d*E and (sometimes) with P = 849.8s and a twice smaller amplitude (Max = 2444750.00350 + 0.00983588d*E). Besides there are rapid brightness variations on time scales 10 - 100s by 0.10m - 0.20m, and high frequency flickering by 0.05m. According to [W.R.Penning, ApJ 289, 300, 1985.], the period of X-ray pulses associated with the rotation of the compact object is 12.5 minutes.
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 S. Scaringi et al., 2009, arXiv:0910.0954v1 [astro-ph.GA] 2009arXiv0910.0954S
2 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
3 R.A.Downes, 2001, PASP 113, 764 2001PASP..113..764D
4 E.P.Belseren, BAAS 13, N2, 524, 1981. 1981BAAS...13Q.524B
5 J.E.Steiner, D.A.Schwartz, F.J. Jablonski, I.C.Busko, M.G.Watson, J.P.Pye,
I.M.McHardy, ApJ 249, L 21, 1981.
1981ApJ...249L..21S
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.
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Image not downloaded. Click Retrieve Image to download and view. Retrieve image
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2011-05-17 21:45 UTC Primary record creation. Type and range from Downes (2001).
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-10-08 22:29 UTC Orbital period from [2009arXiv0910.0954S].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.