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Name
  AU Mic  
AAVSO UID
000-BCW-379 (No observations)  
Constellation
Microscopium Sequence
J2000.0
20 45 09.50 -31 20 27.0  (311.28958 -31.34083) Search nearby
B1950.0 20 42 04.91 -31 31 23.3
Galactic coord. 12.655 -36.802
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2039-31 ASAS J204510-3120.5 CD-31 17815
CPD-31 6335 GJ 803.0 HD 197481
HIP 102409 IRAS 20420-3131 SAO 212402
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Variability type
BY+UV
Spectral type M1.6Ve
Mag. range
8.59 - 8.96 V
Discoverer --
Epoch
04 Nov 1975 (HJD 2442720.75) Ephemeris
Outburst --
Period 4.865 d
Rise/eclipse dur. --
Remarks
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1 Hinzel, David H. Part of a triple hierarchical system with AT Mic AB.
2 Admin, VSX Member of the Beta Pictoris association.
3 Admin, VSX AU Mic = IRAS 20420-3131, per B. Skiff, private communication, 02 Sep 2006. Cross-id transmitted to SIMBAD for inclusion.
4 GCVS Team mu alpha = +0.0212S, mu delta = -0.348" (mu, pi, Vr - common with AT Mic). SB? 0.20P <= M - m <= 0.55P. There are periodical light variations and also flares with A <= 0.5m U [I.C.Busko, C.A.O.Torres, AsAp 64, 153, 1978.].
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References
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1 Messina, S.; et al., 2016, The triple system AT Mic AB +AU Mic in the B
Pictoris Association
2016Ap&SS.361..291M
2 M. Kiraga, 2012, Acta Astronomica 62, 67 2012AcA....62...67K
3 S. Messina, S. Desidera, M. Tutatto, A.C. Lanzafame, E.F. Guinan, 2010, A&A
520, A15
2010A&A...520A..15M
4 M. Kiraga, K. Stepien, 2007, Acta Astronomica 57, 149 2007AcA....57..149K
5 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
6 C.A.O.Torres, S.Ferraz Mello, G.R. Quast, ApL 11, 13, 1972. 1972ApL....11...13T
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Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Hinzel, David H. 2017-08-02 16:48 UTC Multiplicity information from 2016Ap&SS.361..291M. Range form ASAS-3 data.
4 Admin, VSX 2012-04-19 21:08 UTC Update from [2012AcA....62...67K].
3 Admin, VSX 2011-12-22 21:36 UTC Update from [2010A&A...520A..15M].
2 Admin, VSX 2009-04-06 20:45 UTC Update from [2007AcA....57..149K ].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.