results

TrES-4 b

Timing Plot

Total Reductions to Date: 5

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 3.5539289954807267 1.004284235070743e-07
Ephemeris (BJD_TDB) 2460478.7128837686 2.310412359510784e-05
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 268.3043361 decimal
DEC 37.2117397 decimal
Host Star Metallicity 0.28 0.09 Meech et al. 2025
Host Star log(g) 4.09 0.03 Log10(cgs) Meech et al. 2025
Host Star Radius [R_Sun] 1.81 0.08 Sol Meech et al. 2025
Host Star Effective Temperature [K] 6295.0 65.0 K Meech et al. 2025
a/Rs 5.943 0.011 Meech et al. 2025
eccentricity 0.015 0.076 Bonomo et al. 2017
inclination [degrees] 82.582 0.025 deg Meech et al. 2025
omega [degrees] 80.6 9.5 deg Knutson et al. 2014
orbital period [days] 3.55392889 4.4e-07 day Kokori et al. 2023
Rp 21.2 1.11 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.0968 0 ExoFOP-TESS TOI
ephemeris [JD] 2460478.712885 2.3e-05 BJD-TDB Meech et al. 2025

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454223.7985 0.00032 BJD Turner et al. 2016
2455321.9619 0.00022 BJD-TDB Ivshina & Winn 2022
2455364.6085 0.0003 BJD-TDB Kokori et al. 2022
2457482.75059 0.00025 BJD-TDB Kokori et al. 2023
2459767.927156 0.0003835 BJD ExoFOP-TESS TOI
2460478.712885 2.3e-05 BJD-TDB Meech et al. 2025

Observations

Light curve chart for 0000425
Parameter Value Uncertainty
Am1 133724.63 1135.84
Am2 -0.0209 0.006
a/Rs 5.986 0.032
Rp/Rs 0.0 0.0058
ephemeris [JD] 2457887.914 0.012
eccentricity 0.015
inclination [degrees] 82.582
omega [degrees] 80.6
orbital period [days] 3.55392889
u0 2.242990613393217
u1 -3.966493684343528
u2 4.255292778647211
u3 -1.531789644288096
duration 0.1233 0.0019
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 VJCA (collaborate/publish) BPAG
Light curve chart for 0001487
Parameter Value Uncertainty
Am1 0.9997 0.0064
Am2 0.0011 0.0051
a/Rs 5.913 0.031
Rp/Rs 0.1149 0.0098
ephemeris [JD] 2459721.7282 0.0048
eccentricity 0.015
inclination [degrees] 82.582
omega [degrees] 80.6
orbital period [days] 3.55392889
u0 2.488377461869444
u1 -4.480612153316766
u2 4.635944441865442
u3 -1.6437096813371639
duration 0.1323 0.005
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 MBEB (collaborate/publish)
Light curve chart for 0003834
Parameter Value Uncertainty
Am1 0.9656 0.0089
Am2 0.0316 0.0077
a/Rs 5.994 0.031
Rp/Rs 0.077 0.017
ephemeris [JD] 2460119.7453 0.0099
eccentricity 0.015
inclination [degrees] 82.582
omega [degrees] 80.6
orbital period [days] 3.55392889
u0 2.0886962744588704
u1 -3.845257323754406
u2 4.372743931994673
u3 -1.616182817540175
duration 0.1425 0.0049
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CV MObs CV 350.0 nm 850.0 nm
Organization Observer Code Secondary Observers
AAVSO HBRD (collaborate/publish)
Light curve chart for 0003930
Parameter Value Uncertainty
Am1 0.9944 0.0049
Am2 0.0051 0.005
a/Rs 5.998 0.031
Rp/Rs 0.0811 0.0076
ephemeris [JD] 2460126.8725 0.0078
eccentricity 0.015
inclination [degrees] 82.582
omega [degrees] 80.6
orbital period [days] 3.55392889
u0 2.4403700437856655
u1 -4.318860627577906
u2 4.448933718506468
u3 -1.5704430684199489
duration 0.144 0.0025
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
RJ Johnson R 590.0 nm 810.0 nm
Organization Observer Code Secondary Observers
AAVSO MBEB (collaborate/publish)
Light curve chart for 0004343
Parameter Value Uncertainty
Am1 0.9928 0.0051
Am2 0.0046 0.0034
a/Rs 5.997 0.032
Rp/Rs 0.092 0.011
ephemeris [JD] 2460183.7362 0.0049
eccentricity 0.015
inclination [degrees] 82.582
omega [degrees] 80.6
orbital period [days] 3.55392889
u0 1.881403882610645
u1 -3.418134117584495
u2 4.067873026440647
u3 -1.5311427308507648
duration 0.1258 0.0053
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 CCHD (collaborate/publish)