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Name
  ASASSN-19lb  
AAVSO UID
000-BNC-268 (6206 observations)  
Constellation
Musca Sequence
J2000.0
11 39 49.40 -70 40 31.9  (174.95583 -70.67553) Search nearby
B1950.0 11 37 33.23 -70 23 54.0
Galactic coord. 297.026 -8.629
Other names

(Internal only)
2MASS J11394939-7040317 DENIS J113949.4-704032 GSC2.3 S40F052133
SMSS J113949.37-704031.9 UCAC2 01478947 UCAC4 097-033188
USNO-A2.0 0150-08819990 USNO-B1.0 0193-0266588 WISE J113949.41-704031.8
WISEA J113949.40-704031.8    
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Variability type
UG
Spectral type --
Mag. range
14.8 - 16.5 g
Discoverer ASAS-SN
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Schmeer, Patrick Dwarf nova with one of the lowest outburst amplitudes ever observed (E. Aydi, personal communication). Gaia DR2 parallax 0.5888 ± 0.0312 mas (distance 1.62 ± 0.09 kpc).
2 Otero, Sebastian Alberto ASAS-SN magnitudes contaminated by 2MASS J11394812-7040252 (V= 17.7; sep. 9"). Range has been corrected.
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References
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1 T. Jayasinghe; K. Z. Stanek; C. S. Kochanek; et al., 2019, ATel #12703 2019ATel12703....1J
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Images
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Supporting Documents
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1 Outburst spectrum by E. Aydi et al. (SOAR) Schmeer, Patrick 2019-07-18 23:39 UTC The spectrum shows Balmer and He I lines in emission and a blue continuum. Hbeta and Hdelta show emission on top of a broader absorption feature, characteristic of dwarf novae in outburst. The FWHM of Halpha is ~ 400 km/s +- 50 km/s.
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Revision History
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2 Schmeer, Patrick 2019-07-18 22:00 UTC Type according to E. Aydi et al. (personal communication).
1 Otero, Sebastian Alberto 2019-04-30 00:49 UTC Initial submission.

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