results

CoRoT-18 b

Timing Plot

Total Reductions to Date: 9

Date Processed: 09/06/2025 at 07:00:04 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 1.9000895022530087 2.8957768588879283e-07
Ephemeris (BJD_TDB) 2459638.7282469072 0.0006145821584728348
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 98.1724172 decimal
DEC -0.0316045 decimal
Host Star Metallicity -0.1 0.1 Patel & Espinoza 2022
Host Star log(g) 4.4 0.1 Log10(cgs) Patel & Espinoza 2022
Host Star Radius [R_Sun] 1.0 0.13 Sol Patel & Espinoza 2022
Host Star Effective Temperature [K] 5440.0 100.0 K Patel & Espinoza 2022
a/Rs 7.16 0.2 Patel & Espinoza 2022
eccentricity 0.025 Bonomo et al. 2017
inclination [degrees] 89.9 1.6 deg Raetz et al. 2019
omega [degrees] 0.0 deg Patel & Espinoza 2022
orbital period [days] 1.9000769 2.1e-06 day Patel & Espinoza 2022
Rp 12.85 0.44 R_Earth Raetz et al. 2019
Rp/Rs 0.1604 0 ExoFOP-TESS TOI
ephemeris [JD] 2459226.40927 0.00061 BJD Patel & Espinoza 2022

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2455321.7248899997 0.0002 BJD-TDB, HJD Raetz et al. 2019, Bonomo et al. 2017, Hebrard et al. 2011
2459203.608483 0.00136724 BJD ExoFOP-TESS TOI
2459226.40927 0.00061 BJD Patel & Espinoza 2022

Observations

Light curve chart for 0008503
Parameter Value Uncertainty
Am1 0.919 0.096
Am2 0.059 0.068
a/Rs 8.11 0.58
Rp/Rs 0.319 0.085
ephemeris [JD] 2458593.6685 0.0094
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6513286718107127
u1 -2.8365096671903527
u2 3.483160916423003
u3 -1.297979869140221
duration 0.0654 0.0059
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO PMLA (collaborate/publish) MOBS
Light curve chart for 0005965
Parameter Value Uncertainty
Am1 0.454 0.028
Am2 0.66 0.12
a/Rs 8.12 0.57
Rp/Rs 0.191 0.067
ephemeris [JD] 2458836.904 0.01
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6524229549731622
u1 -2.8384899563349566
u2 3.4846402854487826
u3 -1.2985732321618015
duration 0.0855 0.0084
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO WGAC (collaborate/publish) MOBS
Light curve chart for 0010101
Parameter Value Uncertainty
Am1 1.46 0.24
Am2 -0.159 0.037
a/Rs 7.62 0.58
Rp/Rs 0.32 0.091
ephemeris [JD] 2458859.714 0.012
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6520162660981543
u1 -2.837959221627803
u2 3.4839746771302966
u3 -1.2980316696853795
duration 0.062 0.013
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO BSHE (collaborate/publish) MOBS
Light curve chart for 0007099
Parameter Value Uncertainty
Am1 1.19 0.19
Am2 -0.09 0.034
a/Rs 7.84 0.58
Rp/Rs 0.321 0.083
ephemeris [JD] 2458859.714 0.011
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6519847891845973
u1 -2.837691246083852
u2 3.4839234808966895
u3 -1.2982169720829297
duration 0.061 0.012
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO NLIC (collaborate/publish) MOBS
Light curve chart for 0004126
Parameter Value Uncertainty
Am1 0.93 0.11
Am2 0.062 0.087
a/Rs 8.04 0.56
Rp/Rs 0.32 0.097
ephemeris [JD] 2458874.9112 0.0094
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6511996047433835
u1 -2.8366779617265827
u2 3.4833300171291035
u3 -1.2978516082402423
duration 0.037 0.011
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO SPUA (collaborate/publish) MOBS
Light curve chart for 0009829
Parameter Value Uncertainty
Am1 0.846 0.038
Am2 0.135 0.039
a/Rs 8.11 0.57
Rp/Rs 0.314 0.089
ephemeris [JD] 2458873.016 0.013
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6525426364295777
u1 -2.840060525784481
u2 3.486703039818063
u3 -1.2991850985072357
duration 0 0
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO DTEC (collaborate/publish) MOBS
Light curve chart for 0010773
Parameter Value Uncertainty
Am1 0.89 0.043
Am2 0.09 0.11
a/Rs 8.12 0.58
Rp/Rs 0.086 0.046
ephemeris [JD] 2458897.694 0.012
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 1.6519997056074285
u1 -2.8377833635039478
u2 3.4837599737339358
u3 -1.2979762639253476
duration 0.0804 0.0069
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
V Johnson V 502.8 nm 586.8 nm
Organization Observer Code Secondary Observers
AAVSO FSAF (collaborate/publish) MOBS
Light curve chart for 0001249
Parameter Value Uncertainty
Am1 1.112 0.042
Am2 -0.051 0.022
a/Rs 6.16 0.17
Rp/Rs 0.316 0.017
ephemeris [JD] 2459638.7185 0.0026
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 2.2957051379650415
u1 -4.024006813649002
u2 4.22497898276746
u3 -1.4966772441264067
duration 0.1203 0.0033
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0002184
Parameter Value Uncertainty
Am1 0.751 0.015
Am2 0.181 0.044
a/Rs 8.14 0.57
Rp/Rs 0.079 0.037
ephemeris [JD] 2459900.954 0.012
eccentricity 0.025
inclination [degrees] 89.9
omega [degrees] 0.0
orbital period [days] 1.9000769
u0 2.423271418233944
u1 -4.247954672401021
u2 4.348703007414225
u3 -1.5240196884464243
duration 0.0802 0.0062
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
NA Custom 690.0 nm 819.0 nm
Organization Observer Code Secondary Observers
AAVSO DSCC (collaborate/publish) BPAG