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Latest Details
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Name
  HD 169142  
AAVSO UID
--  
Constellation
Sagittarius Sequence
J2000.0
18 24 29.78 -29 46 49.3  (276.12408 -29.78036) Search nearby
B1950.0 18 21 17.99 -29 48 29.3
Galactic coord. 3.392 -7.810
Other names

(Internal only)
2MASS J18242978-2946492 2RXS J182427.5-294654 ASAS J182430-2946.8
CD-29 14904 CPD-29 5538 GSC 06856-00876
Hen 3-1688 IDS 18181-2950 A IRAS 18213-2948
MWC 925 PDS 514 PPM 268372
SAO 186777 TIC 51077087 TYC 6856-876-1
WDS J18245-2947A [M64] -29 88  
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Variability type
VAR
Spectral type F1VekA3mA3 λ Boo:
Mag. range
8.14 V (0.006)TESS
Discoverer --
Epoch
30 Jun 2019 (HJD 2458665.475) Ephemeris
Outburst --
Period 3.243 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Herbig AeBe star. Classified as B9Ve in 1994A&AS..104..315T. It has a protoplanetary disk with a multiring structure, likely caused by an inner stellar binary and a circumbinary (P-type) planet (2022MNRAS.510..205P).
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References
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1 Poblete, P. P.; Cuello, N.; Pérez, S.; et al., 2022, The protoplanetary
disc around HD 169142: circumstellar or circumbinary?
2022MNRAS.510..205P
2 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
3 Gray, R. O.; Riggs, Q. S.; Koen, C.; et al., 2017, The Discovery of λ
Bootis Stars: The Southern Survey I
2017AJ....154...31G
4 The, P. S.; de Winter, D.; Perez, M. R., 1994, A new catalogue of members
and candidate members of the Herbig Ae/Be (HAEBE) stellar group
1994A&AS..104..315T
External Links
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Images
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Supporting Documents
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2 Phase plot Otero, Sebastian Alberto 2023-06-28 23:32 UTC Phase plot with TESS QLP data.
1 JD light curve Otero, Sebastian Alberto 2023-06-28 23:32 UTC Light curve with TESS QLP data.
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Revision History
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1 Otero, Sebastian Alberto 2023-06-29 06:00 UTC Mean magnitude from the GCPD. Spectral type from 2017AJ....154...31G.