results

NGTS-13 b

Timing Plot

Total Reductions to Date: 2

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.118970129813256 7.529944893316101e-06
Ephemeris (BJD_TDB) 2460022.704473721 0.0018371546538806607
Time saved (hours) 0.0045  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 176.2402326 decimal
DEC -38.1397158 decimal
Host Star Metallicity 0.25 0.17 Grieves et al. 2021
Host Star log(g) 4.04 0.05 Log10(cgs) Grieves et al. 2021
Host Star Radius [R_Sun] 1.788 0.057 Sol Grieves et al. 2021
Host Star Effective Temperature [K] 5819.0 73.0 K Grieves et al. 2021
a/Rs 6.603 Grieves et al. 2021
eccentricity 0.086 0.034 Grieves et al. 2021
inclination [degrees] 88.7 1.2 deg Grieves et al. 2021
omega [degrees] -146.4 24.2 deg Grieves et al. 2021
orbital period [days] 4.119027 2.3e-05 day Grieves et al. 2021
Rp 12.8 0.52 R_Earth Grieves et al. 2021
Rp/Rs 0.0656 0 Grieves et al. 2021
ephemeris [JD] 2458572.8247 0.0018 BJD-TDB Grieves et al. 2021

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2458572.8247 0.0018 BJD-TDB Grieves et al. 2021
2459326.617962 0.0036295 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0004819
Parameter Value Uncertainty
Am1 1.0131 0.0046
Am2 -0.009 0.0021
a/Rs 5.91 0.3
Rp/Rs 0.0752 0.0064
ephemeris [JD] 2460022.7014 0.002
eccentricity 0.086
inclination [degrees] 88.7
omega [degrees] -146.4
orbital period [days] 4.119027
u0 2.136202532828272
u1 -3.8084899803140475
u2 4.1835803864015535
u3 -1.5112928765755722
duration 0.249 0.013
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO TKAA (collaborate/publish) KDYA
Light curve chart for 0003408
Parameter Value Uncertainty
Am1 0.125 0.073
Am2 1.0 0.47
a/Rs 3.37 1.91
Rp/Rs 0.09 0.038
ephemeris [JD] 2460018.594 0.012
eccentricity 0.086
inclination [degrees] 88.7
omega [degrees] -146.4
orbital period [days] 4.119027
u0 2.136471886649225
u1 -3.8095876029286906
u2 4.184967039028981
u3 -1.5118512603886471
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
R Cousins R 561.7 nm 719.7 nm
Organization Observer Code Secondary Observers
AAVSO KDYA (collaborate/publish)