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Name
  V0731 Lac  
AAVSO UID
--  
Constellation
Lacerta Sequence
J2000.0
22 45 06.74 +50 53 14.3  (341.27808 +50.88731) Search nearby
B1950.0 22 42 59.62 +50 37 26.8
Proper motion
RA: 1.9 +/- 6.0 mas/yDec: -5.1 +/- 5.5 mas/ySource: UCAC4
Galactic coord. 103.483 -7.152
Other names

(Internal only)
2MASS J22450674+5053143 AKARI-IRC-V1 J2245065+505313 ASASSN-V J224506.77+505314.5
GSC2.3 N2S0018398 NSVS 6071356 NSVS 6170945
UCAC4 705-108857 USNO-A2.0 1350-17262597 USNO-B1.0 1408-0470659
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Variability type
SRB
Spectral type --
Mag. range
14.0 - 14.8 V
Discoverer --
Epoch
12 Jun 1999 (HJD 2451342.0) Ephemeris
Outburst --
Period 74.1 d
Rise/eclipse dur. --
Remarks
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1 Siarhey, Hadon J-K= 1.29. NSVS magnitudes are contaminated by 2MASS J22450537+5053121 (J-K= 0.69, V= 15.7, sep. 13"), 2MASS J22450860+5053175 (J-K= 0.48, V= 15.3, sep. 18"), 2MASS J22450984+5053242 (J-K= 0.34, V= 14.8, sep. 31"), 2MASS J22451030+5053130 (J-K= 0.44, V= 15.5, sep. 33"). Range has been corrected.
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References
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1 E.V. Kazarovets, N.N. Samus, O.V. Durlevich et al., 2020, The 82nd
Name-List of Variable Stars. Part III - RA 20h to 24h and Novae
2020PZ.....40....6K
2 E.G. Lapukhin, S.A. Veselkov, A.M. Zubareva, E.D. Starovoit, I.V.
Kolbasina, 2014, PZP 14, 7
2014PZP....14....7L
3 Northern Sky Variability Survey, Wozniak, P.R., et al., 2004 2004AJ....127.2436W
External Links
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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 = 9.19H = 8.20K = 7.90J - K = 1.29
AllWISE W1 = 7.64W2 = 7.65W3 = 7.15W4 = 6.67W1 - W2 = -0.01W3 - W4 = 0.48
Images
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Supporting Documents
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1 Phase plot P 74.1 Siarhey, Hadon 2015-01-22 02:04 UTC
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Revision History
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3 Admin, VSX 2020-10-21 02:57 UTC Update from [2020PZ.....40....6K].
2 Siarhey, Hadon 2015-01-22 01:42 UTC Type, period, epoch and maximum magnitude from NSVS and SibSAU data. UCAC4 position.
1 Admin, VSX 2014-05-06 00:25 UTC Preserved original object data.