AAVSO Home



Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
Name
  U Lep  
AAVSO UID
000-BCW-230 (2785 observations)  
Constellation
Lepus Sequence
J2000.0
04 56 17.99 -21 13 02.0  (74.07494 -21.21723) Search nearby
B1950.0 04 54 09.08 -21 17 38.5
Proper motion
RA: 40.792 +/- 0.119 mas/yDec: -59.769 +/- 0.137 mas/ySource: Gaia DR1
Galactic coord. 221.110 -34.369
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1SWASP J045617.98-211302.0 AAVSO 0452-21 ASAS J045618-2113.0
BD-21 1019 CPD-21 694 CRTS J045617.9-211303
HD 31599 HIP 22952 SSS_J045617.9-211303
UCAC4 344-006338    
(Not logged in)  Add name
Variability type
RRAB
Spectral type A7-F7
Mag. range
9.890 - 11.093 V
Discoverer --
Epoch
04 Feb 1972 (HJD 2441352.346) Ephemeris
Outburst --
Period 0.5814789 d  (13.95549 h)
Rise/eclipse dur. 13%
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team P var. Max = 2425084.431 + 0.58147098d*E (JD2411000 - 25090); Max = 2425084.431 + 0.58147377d*E (JD2425080 - 37700) [G.A.Lange, Astron. Tsirk. N229, 21, 1962.]; since JD2436600 - see Table. Delta(S) = 8.5; (k - b)2 = 0.00.
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Greer, P. A.; Payne, S. G.; Norton, A. J.; et al., 2017, The SuperWASP
catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect
candidates
2017A&A...607A..11G
2 G. Torrealba, M. Catelan, A.J. Drake et al., 2015, MNRAS 446, 2251 2015MNRAS.446.2251T
3 D.M. Szczygiel, G. Pojmanski, B. Pilecki, 2009, arXiv:0906.2199v1
[astro-ph.SR]
2009arXiv0906.2199S
4 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
5 V.P.Zessewitsch, Astron. Tsirk. N811, 1974. --
6 V.A.Nachapkin, B.V.Kukarkin, Tadj. Tsirk. N51, 1941. --
External Links
Links open in a new window. Not all links may be valid for this particular target.
Location    Go   
Select a Location for more details.
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 = 9.91H = 9.61K = 9.58J - K = 0.33
AllWISE W1 = 9.44W2 = 9.43W3 = 9.45W1 - W2 = 0.01
APASS-DR9 B = 10.92V = 10.63g' = 10.77r' = 10.56i' = 10.52B - V = 0.29
GALEX-DR5 FUV = 18.18NUV = 14.08FUV - NUV = 4.11
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Image not downloaded. Click Retrieve Image to download and view. Retrieve image
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Admin, VSX 2015-04-27 20:56 UTC UCAC4 position.
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-06-18 21:51 UTC Update from [2009arXiv0906.2199S].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.