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Name
  NSV 9811  
AAVSO UID
--  
Constellation
Ara Sequence
J2000.0
17 54 15.23 -46 18 49.3  (268.56346 -46.31369) Search nearby
B1950.0 17 50 31.60 -46 18 16.0
Galactic coord. 345.789 -10.250
Other names

(Internal only)
2MASS J17541523-4618492 ASASSN-V J175415.02-461843.7 ASASSN-V J175415.26-461848.9
GSC2.3 S7B7030088 Gaia DR2 5954003181244248064 Gaia DR3 5954003181244248064
SON 8715 UCAC4 219-156295 USNO-A2.0 0375-33676280
USNO-B1.0 0436-0649804    
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Variability type
RRAB
Spectral type F
Mag. range
15.18 - 16.26 V
Discoverer Cuno Hoffmeister
Epoch
09 Oct 2017 (HJD 2458035.565) Ephemeris
Outburst --
Period 0.4612913 d  (11.07099 h)
Rise/eclipse dur. 14%  (1.550 h)
Remarks
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1 Otero, Sebastian Alberto VSP Note: 18.3 Vmag. star 2.5" to the SE, 17.9 Vmag. star 3.0" to the NNW, 17.8 Vmag. star 8" to the NNE, 16.3 Vmag. star 12" to the ENE and 15.7 Vmag. star 13" to the NW.
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References
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1 Creevey, O. L.; et al., 2023, Gaia Data Release 3: Astrophysical parameters
inference system (Apsis) I -- methods and content overview
2023A&A...674A..26C
2 Gaia collaboration; et al., 2022, Gaia Data Release 3 (Gaia DR3) Part 1
Main source
2022yCat.1355....0G
3 Jayasinghe, T.; Stanek, K. Z.; Kochanek, C. S.; et al., 2019, The ASAS-SN
catalogue of variable stars - II. Uniform classification of 412 000 known
variables
2019MNRAS.486.1907J
4 Gaia collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties
2018A&A...616A...1G
5 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
6 C.Hoffmeister, AN 289, H. 1-2, 1, 1966. 1966AN....289....1H
External Links
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Images
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Supporting Documents
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Stellar Association Membership
 Alessi 9 Open Cluster 2012A&A...548A..97Z
Revision History
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2 Otero, Sebastian Alberto 2025-03-01 17:45 UTC Type from 2018A&A...616A...1G. Period and epoch from 2019MNRAS.486.1907J. Rise duration from ASAS-SN data. Range derived from Gaia DR3 data. Gaia DR3 position. Spectral type from 2023A&A...674A..26C.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.