AAVSO Home



Current Time: 31 Mar 2025 22:27:25 UTC
Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
Name
  TRAPPIST-1  
AAVSO UID
000-BNR-112 (No observations)  
Constellation
Aquarius Sequence
J2000.0
23 06 29.37 -05 02 29.0  (346.62237 -5.04139) Search nearby
B1950.0 23 03 54.21 -05 18 42.7
Galactic coord. 69.713 -56.645
Other names

(Internal only)
2MASS J23062928-0502285 2MASSI J2306292-050227 2MASSW J2306292-050227
2MUCD 12171 EPIC 200164267 EPIC 246199087
K2-112 USNO-B1.0 0849-0622773 WISEA J230630.02-050234.1
(Not logged in)  Add name
Variability type
EP
Spectral type M7.5e
Mag. range
18.80 (0.007) V
Discoverer --
Epoch
17 Sep 2015 (HJD 2457282.8073) Ephemeris
Outburst --
Period 2.4218233 d
Rise/eclipse dur. 1.21%  (0.703 h)
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 2016Natur.533..221G Planet: TRAPPIST-1c. There are 7 planets in the system. Epoch time base is BJD-TDB.
(Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 NASA Exoplanet Archive, 2020, online data --
2 Gillon, M.; Jehin, E.; Lederer, S.; et al., 2016, Temperate Earth-sized
planets transiting a nearby ultracool dwarf star
2016Natur.533..221G
3 Costa, E.; Méndez, R. A.; Jao, W. -C.; et al., 2006, The Solar
Neighborhood. XVI. Parallaxes from CTIOPI: Final Results from the 1.5 m
Telescope Program
2006AJ....132.1234C
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.
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.
2 Otero, Sebastian Alberto 2021-01-16 01:17 UTC Maximum magnitude from 2006AJ....132.1234C.
1 Admin, VSX 2020-09-10 00:56 UTC Preserved original object data.