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Name
AU Mic
AAVSO UID
Constellation
J2000.0
B1950.0
20 42 03.84 -31 31 05.5
Proper motion
RA: 281.376 +/- 0.069 mas/y Dec: -360.112 +/- 0.043 mas/y Source: Gaia DR1
Galactic coord.
12.655 -36.802
Other names(Internal only)
Please note that aliases shown in grey link to obsolete records.
1RXS J204509.4-312023
1SWASP J204509.52-312027.2
2MASS J20450949-3120266
AAVSO 2039-31
ASAS J204509-3120.3
ASAS J204509-3120.5
ASAS J204510-3120.4
ASAS J204510-3120.5
CCDM J20451-3122A
CD-31 17815
CPD-31 6335
GJ 803
GJ 803.0
HD 197481
HIP 102409
IRAS 20420-3131
IRAS F20420-3131
Karmn J20451-31
LTT 8214
MCC 824
NLTT 49807
PM J20451-3120
PPM 300560
RX J2045.2-3120
SAO 212402
TIC 441420236
TOI-2221
TYC 7457-641-1
UCAC4 294-224065
WDS J20452-3120A
WISEA J204509.75-312030.9
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Variability type
TTS/ROT+EP+UV
Spectral type
M1Ve
Mag. range
8.56 - 8.73 V
Discoverer
--
Epoch
Outburst
--
Period
4.863 d
Rise/eclipse dur.
--
Remarks
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1
Otero, Sebastian Alberto
It hosts two transiting warm Neptunes near mean-motion resonances. AU Mic b mean elements HJD= 2458330.38416 + 8.4631427 x E, amplitude 0.002, duration 1.8%. AU Mic c mean elements HJD= 2459454.8973 + 18.85882 x E, amplitude 0.001, duration 1.0%. Both planets show large-amplitude Transit Timing Variations. Minimum to-maximum amplitude ≥23 min. for AU Mic b and ≥9.5 min. for AU Mic c.
2
Hinzel, David H.
Part of a triple hierarchical system with AT Mic AB.
3
Admin, VSX
Member of the Beta Pictoris association.
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
Szabó, Gy. M.; Garai, Z.; Brandeker, A.; et al., 2022, Transit timing
2022A&A...659L...7S
2
Plavchan, P.; Barclay, T.; Gagné, J.; et al., 2020, A planet within the
2020Natur.582..497P
3
Messina, S.; et al., 2016, The triple system AT Mic AB +AU Mic in the B
2016Ap&SS.361..291M
4
M. Kiraga, 2012, Acta Astronomica 62, 67
2012AcA....62...67K
5
S. Messina, S. Desidera, M. Tutatto, A.C. Lanzafame, E.F. Guinan, 2010, A&A
2010A&A...520A..15M
6
M. Kiraga, K. Stepien, 2007, Acta Astronomica 57, 149
2007AcA....57..149K
7
G.Pojmanski, Acta Astronomica 52, 397, 2002.
2002AcA....52..397P
8
C.A.O.Torres, S.Ferraz Mello, G.R. Quast, ApL 11, 13, 1972.
1972ApL....11...13T
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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 = 5.44 H = 4.83 K = 4.53 J - K = 0.91
Images
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Supporting Documents
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Revision History
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