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Latest Details
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Name
  RU Lup  
AAVSO UID
000-BBW-753 (10448 observations)  
Constellation
Lupus Sequence
J2000.0
15 56 42.31 -37 49 15.5  (239.17629 -37.82097) Search nearby
B1950.0 15 53 24.40 -37 40 34.6
Proper motion
RA: -11.552 +/- 0.201 mas/yDec: -23.103 +/- 0.142 mas/ySource: Gaia DR1
Galactic coord. 338.648 +11.885
Other names

(Internal only)
2MASS J15564230-3749154 2XMM J155642.3-374915 AAVSO 1550-37
ALS 18952 AN 47.1916 ASAS J155642-3749.3
ASASSN-V J155642.30-374915.6 CD-37 10602 GSC 07838-00546
HBC 251 HD 142560 HIP 78094
HV 3402 Hen 3-1120 IRAS 15534-3740
LSE 140 PARK 4 2248 Sz 83
THA 15-13 TIC 58646587 TYC 7838-546-1
WRAY 15-1386 [KWS97] Lupus 2 29  
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Variability type
CTTS
Spectral type G5e-M0e
Mag. range
9.8 - 12.9 V
Discoverer Johanna Mackie (1916)
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 GCVS Team Sometimes varies quasiperiodically: P1 = 3.5457d, P2 = 3.8375 [C.Hoffmeister, VSS 3, N3, 1958.]. H2O maser.
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References
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1 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1. 0
2017PASP..129j4502K
2 Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016) 2014yCat....1.2023S
3 Yang, H.; Herczeg, G. J.; Linsky, J. L.; et al., 2012, A Far-ultraviolet
Atlas of Low-resolution Hubble Space Telescope Spectra of T Tauri Stars
2012ApJ...744..121Y
4 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
5 Hartwig, E.; Muller, G., 1921, Benennung von neu entdeckten veraenderlichen
Sternen
1921AN....212..353.
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 = 8.73H = 7.82K = 7.14J - K = 1.59
AllWISE W1 = 6.00W2 = 5.01W3 = 2.82W4 = 0.66W1 - W2 = 0.99W3 - W4 = 2.16
APASS-DR9 B = 11.68V = 11.18g' = 11.41r' = 10.84i' = 10.52B - V = 0.50
Images
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Supporting Documents
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Campaigns/Programs
 YSO Program
Revision History
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4 Fernig, Leo 2023-03-29 20:23 UTC Discoverer updated from 1921AN....212..353. page 368.
3 Otero, Sebastian Alberto 2021-04-22 18:30 UTC Maximum magnitude from ASAS-SN data. Minimum magnitude derived from Hipparcos data. Type from 2012ApJ...744..121Y. Spectral type from Skiff (2016).
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.