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Name
  GSC 03699-01861  
AAVSO UID
--  
Constellation
Cassiopeia Sequence
J2000.0
02 36 40.96 +58 57 50.7  (39.17067 +58.96408) Search nearby
B1950.0 02 32 58.09 +58 44 48.6
Galactic coord. 136.145 -1.181
Other names

(Internal only)
2MASS J02364094+5857507 ASASSN-V J023640.96+585751.0 Gaia DR3 464237796646782592
NSVS 1801000 NSVS 1850090 NSVS 1922710
TIC 245477444 UCAC4 745-023210 USNO-B1.0 1489-0085229
WISE J023640.96+585750.6 [D75b] Em* 02-097  
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Variability type
TTS/ROT
Spectral type --
Mag. range
12.83 - 13.13 V
Discoverer --
Epoch
21 Dec 2012 (HJD 2456283.43) Ephemeris
Outburst --
Period 3.65 d
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Mendez, Manuel J. Spectral type O in 2023A&A...674A..26C not consistent with a T Tauri classification. Classified as giant in 2025MNRAS.537.1984A, consistent with the Gaia DR3 parallax. 2MASS colors indicate infrared excess typical of YSOs. Mean (likely) rotational period given in the table but the period varies in time between 3.5 and 3.9 d. Variations in other time scales also present. Short period variability with elements BJD 2459888.276 + 0.4810 x E in TESS data. Also a rather stable long period with elements BJD 2457309 + 178 x E, apparent in NSVS, ZTF, MQZ and ASAS-SN data.
2 Mendez, Manuel J. In the W3 star-forming region (2003AJ....126.1423K). J-K= 1.60; B-V= 1.67. Mean magnitude change in NSVS data. Additional intrinsic variability superimposed to the main period. APASS magnitudes used for the comparison stars UCAC4 745-023164 (V:11.97) and UCAC4 745-023207 (V:12.70).
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Ardern-Arentsen, A.; et al., 2025, Predicting metallicities and carbon
abundances from Gaia XP spectra for (carbon-enhanced) metal-poor stars		 2025MNRAS.537.1984A
2 Creevey, O. L.; et al., 2023, Gaia Data Release 3. Astrophysical parameters
inference system (Apsis). I. Methods and content overview		 2023A&A...674A..26C
3 Huang, C. X.; et al., 2020, Photometry of 10 Million Stars from the First
Two Years of TESS Full Frame Images: Part I		 2020RNAAS...4..204H
4 Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive		 2019PASP..131a8003M
5 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0		 2017PASP..129j4502K
6 Wozniak, P. R.; et al., 2004, Northern Sky Variability Survey: Public Data
Release		 2004AJ....127.2436W
7 Wozniak, P.R., et al., 2004, Northern Sky Variability Survey: Public Data
Release		 2004AJ....127.2436W
8 Kraemer, K. E.; et al., 2003, Observations of Star-Forming Regions with the
Midcourse Space Experiment 		2003AJ....126.1423K
9 Dolidze, M. V., 1975, The lists of S, C, MS stars and emission objects
revealed in red light observations. 		1975AbaOB..47....3D
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Supporting Documents
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5 Phase plot - Short period Mendez, Manuel J. 2026-01-15 05:17 UTC GSC 03699-01861 folded short period LC, with TESS data
4 Phase plot - ROT Mendez, Manuel J. 2026-01-15 05:15 UTC GSC 03699-01861 folded LC as ROT, with MQZ, ASASSN, NSVS, ZTF and TESS data
3 Light curve - Short term variations Mendez, Manuel J. 2026-01-14 06:21 UTC GSC 03699-01861 short term variations LC with TESS data
2 Phase plot - Long period Mendez, Manuel J. 2025-12-20 06:10 UTC GSC 03699-01861 folded long period LC , with MQZ, ASASSN, NSVS, ZTF and TESS data
1 GSC03699_01861_foldedLC Mendez, Manuel J. 2013-10-29 20:54 UTC GSC 03699-01861folded LC with MQZ data, used to estimate main period
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Revision History
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2 Mendez, Manuel J. 2025-12-12 07:03 UTC Position from Gaia DR3. Spectral type from 1975AbaOB..47....3D. Short period elements and ROT epoch from TESS data. ROT period from ZTF and TESS data. Range, long period and epoch from MQZ, NSVS, ASASSN and ZTF data.
1 Mendez, Manuel J. 2013-10-30 03:08 UTC Initial submission.

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