TOI-4666 Overview
TOI-4666
0.59
R⦿
3666.00
K
TOI-4666 b
1.118
RJup
- Architecture
- TOI-4666
- TOI-4666
Discovery Data
| Host | Planet | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|---|
| TOI-4666 | TOI-4666 b | 2.91 d | 12.53 R⨁ | Transit | 2025 | Frensch et al. 2025 | Confirmed Planet |
TOI-4666 b
- Planet also independently announced in this ref. (Dransfield et al. 2026)
- RA
- 03h45m09.57s
- Dec
- -39d03m47.45s
- Distance
-
154.749+0.547-0.542pc
- Parallax
- 6.4332000±0.0225686 mas
- Ecliptic Latitude
- -56.62612 deg
- Ecliptic Longitude
- 38.42733 deg
- Galactic Latitude
- -52.10943 deg
- Galactic Longitude
- 242.57258 deg
- Total Proper Motion
- 22.4761132±0.0453594 mas/yr
- Proper Motion (RA)
- 4.1080600±0.0351225 mas/yr
- Proper Motion (Dec)
- -22.0975000±0.0456722 mas/yr
- Photometry
-
mV15.333±0.172
-
mTESS13.327200±0.007859
-
mJ11.978±0.023
-
mH11.289±0.022
-
mKs11.085±0.025
-
mW110.999±0.023
-
mW210.981±0.021
-
mW310.844±0.061
-
mW49.512
-
mGaia14.390600±0.000932
-
mB16.746±0.084
| Source | Dransfield et al. 2026 | Frensch et al. 2025 | TICv8 | ExoFOP | Show Candidate Solutions >> | << Hide Candidate Solutions |
|---|---|---|---|---|---|---|
|
Teff
(K)
|
3793±80 | 3512±36 | 3666.0±157.0 | 3666±157 | ||
|
L✶
(log10(L⦿))
|
-1.20+0.04-0.05
|
-1.2+0.0-0.0
|
-1.25180+0.09075-0.11487
|
--- | ||
|
ρ✶
(g/cm3)
|
4.38±0.38 |
4.38+0.06-0.07
|
4.029721±0.220484 | --- | ||
|
M✶
(M⦿)
|
0.576±0.012 | 0.58±0.01 | 0.5770430±0.0203816 | --- | ||
|
R✶
(R⦿)
|
0.585±0.018 | 0.59±0.02 | 0.5866330±0.0175904 | 0.59±0.02 | ||
|
log g
(log10(cm/s2))
|
4.664±0.028 |
4.626+0.008-0.004
|
4.6625400±0.0107068 | 4.66±0.01 | ||
|
Metallicity
(dex)
|
0.79±0.14 [Fe/H] | 0.19±0.12 [Fe/H] | --- | --- | ||
|
Sp. T
|
M2±0.5 | M2.5 V | --- | --- | ||
|
Prot
(days)
|
--- | 15.3 | --- | --- | ||
|
Age
(Gyr)
|
3+3-2
|
--- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity, Transit
| Source | Dransfield et al. 2026 | Frensch et al. 2025 | ExoFOP | Show Candidate Solutions >> | << Hide Candidate Solutions |
|---|---|---|---|---|---|
|
Teq
(K)
|
695±15 | 713±14 | 729 | ||
|
b
|
0.045+0.042-0.030
|
0.090±0.050 | --- | ||
|
S
(S⨁)
|
55.6±6.8 | 54±3 | 46.992 | ||
|
Mp
(M⨁)
|
155+21-21
|
222±19 | --- | ||
|
Mp
(MJup)
|
0.489+0.067-0.066
|
0.70±0.06 | --- | ||
|
e
|
0.023+0.033-0.016
|
0 | --- | ||
|
i
(deg)
|
89.79+0.14-0.19
|
89.6±0.2 | --- | ||
|
P
(days)
|
2.9089165±0.0000070 |
2.9089168+0.0000007-0.0000006
|
2.9093856±0.0001922 | ||
|
ρ
(g/cm3)
|
0.43+0.08-0.07
|
0.64+0.09-0.08
|
--- | ||
|
Rp
(R⨁)
|
12.53±0.39 | 12.4±0.4 | 12.868800±0.465005 | ||
|
Rp
(RJup)
|
1.118±0.035 | 1.11±0.04 | 1.1480794±0.0414850 | ||
|
Rp/R✶
|
0.19653±0.00042 |
0.1934+0.0009-0.0008
|
--- | ||
|
K
(m/s)
|
103±13 |
144+11-12
|
--- | ||
|
a
(au)
|
0.0340±0.0011 | 0.0333±0.0002 | --- | ||
|
T14
(hours)
|
51.29±0.10 |
2.370+0.007-0.008
|
2.075±0.101 | ||
|
TC
(days)
|
2460265.13619±0.00007
(BJD)
|
2459168.4744±0.0002
(BJD)
|
2459168.4763680±0.0009683
(BJD)
|
||
|
δ
(%)
|
--- | --- | 4.51600000±0.00161691 | ||
|
a/R✶
|
12.45±0.13 | --- | --- | ||
|
ω
(deg)
|
183+50-49
|
--- | --- |
- Known Objects
- 1 Confirmed Planets
- 1 2MASS Point Source Catalog
- Data Files
- 1 SuperWASP Time Series
- 1 Associated Literature Data
-
MANGOS II: Five new giant planets orbiting low-mass stars
Dransfield et al. 2026 | Reference Overview -
TOI-3288 b and TOI-4666 b: two gas giants transiting low-mass stars characterised by NIRPS
Frensch et al. 2025 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
ExoFOP TOI Table
ExoFOP
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
- External Link
- Search
- Browse
- Download
