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Name
  NSV 17721  
AAVSO UID
--  
Constellation
Camelopardalis Sequence
J2000.0
08 06 40.12 +73 33 59.5  (121.66717 +73.56653) Search nearby
B1950.0 08 00 51.27 +73 42 35.5
Proper motion
RA: -6.553 +/- 0.047 mas/yDec: -13.664 +/- 0.057 mas/ySource: Gaia DR1
Galactic coord. 141.184 +31.234
Other names

(Internal only)
2MASS J08064012+7333594 BD+73 397 GALEX J080639.9+733403
GSC 04380-00751 Gaia DR3 1135060973302275328 HD 65732
HDS 1153 HIP 39689 PPM 6918
SAO 6417 TIC 441626681 TYC 4380-751-1
WDS J08067+7334AB    
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Variability type
EA+HB+DSCT
Spectral type A3III
Mag. range
8.74 - 8.85 V
Discoverer Hipparcos
Epoch
22 Nov 1990 (HJD 2448218.313) Ephemeris
Outburst --
Period 6.283594 d
Rise/eclipse dur. 2.4%  (3.62 h)
Remarks
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1 Otero, Sebastian Alberto Tidally-induced pulsations with amplitude 0.007 TESS and elements BJD 2460294.823 + 0.349087 d x E. f1 = 18f orb. DSCT pulsations with amplitude 0.004 TESS and elements BJD 2460294.833 + 0.1705767 d x E. HB amplitude 0.01 TESS.
2 Otero, Sebastian Alberto Visual binary (A= 8.85; B= 11.8; sep. 0.3"). Combined range given.
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References
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1 Solanki, S.; Cieplak, A. M.; Schnittman, J.; et al., 2025, Short-period
Heartbeat Binaries from TESS Full-frame Images
2025ApJS..276...17S
2 Kliapets, M.; Huijse, P.; Tkachenko, A; et al., 2025, Automated all-sky
detection of γ Doradus/δ Scuti hybrids in TESS data from positive
unlabelled (PU) learning
2025A&A...703A.240K
3 Ricker, G. R.; et al., 2014, Transiting Exoplanet Survey Satellite (TESS) 2014SPIE.9143E..20R
4 The Hipparcos and Tycho Catalogues, Vol.11 and Vol.17, CD-ROM No.1,
SP-1200, ESA, 1997.
1997ESASP1200.....P
5 Bartaya, R. A., 1979, Catalog of spectral and luminosity classes of 10396
stars in Kapteyn's selected areas NN 2-43
1979AbaOB..51....1B
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 = 8.34H = 8.26K = 8.23J - K = 0.11
AllWISE W1 = 8.19W2 = 8.23W3 = 8.26W4 = 8.58W1 - W2 = -0.03W3 - W4 = -0.32
APASS-DR9 g' = 10.06
Images
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Supporting Documents
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3 Phase plot - EA+HB Otero, Sebastian Alberto 2026-05-31 01:33 UTC Phase plot showing the eclipses and the heartbeat, with TESS data.
2 Phase plot - DSCT Otero, Sebastian Alberto 2026-05-31 01:31 UTC Phase plot showing the DSCT pulsations with TESS data.
1 Phase plot - Tidally-induced pulsations Otero, Sebastian Alberto 2026-05-31 01:26 UTC Phase plot showing the tidally-induced pulsations with TESS data.
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Revision History
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3 Otero, Sebastian Alberto 2026-05-31 01:26 UTC Type (HB) from 2025ApJS..276...17S. Type (hybrid pulsator) from 2025A&A...703A.240K. Periods, epochs, eclipse duration and range derived from TESS and Hipparcos data.
2 Otero, Sebastian Alberto 2020-05-25 02:10 UTC Type, epoch and range from Hipparcos data. Spectral type from 1979AbaOB..51....1B. Gaia DR2 position.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.