Mass
1.98 Msun
single adopted value
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Stellar HostProfile
MXB 1658-298
Unclassified star
Records
1
literature rows
Planets
1
system count
References
1
distinct source labels
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Lewin & Joss 1981 • System source: —
Planets
1
Stable across source rows
System Layout
Known planets
1 planets linked to this host
MXB 1658-298 b
Eclipse Timing Variations
◌
Discovery
2017
Period
760 days
Radius
—
Mass
7532.6 M⊕
Eq. Temp
—
MXB 1658-298 b: A Circumbinary World
MXB 1658-298 is a binary star system, and the host star at its center has a reported mass of 1.98 solar masses. That star's reported mass estimate is larger than the Sun's. A single planet is known to orbit this host.
The planet is MXB 1658-298 b, a circumbinary world discovered in 2017 by the Eclipse Timing Variations method. Because it is circumbinary, it orbits both stars of the binary system rather than one star alone. Its reported mass is 7530 Earth masses, an estimate larger than Earth's and roughly 23.7 times Jupiter's mass. MXB 1658-298 b completes one orbit in 760 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
1
Stellar refs
1
System refs
0
Massstable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 1.98 | — | — | — | — | — | Lewin & Joss 1981 | — |