results

Qatar-7 b

Timing Plot

Total Reductions to Date: 16

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 2.0320237839903657 4.222453885010566e-07
Ephemeris (BJD_TDB) 2460225.714342026 0.0004095611814241416
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 358.5151344 decimal
DEC 37.0218242 decimal
Host Star Metallicity 0.276 0.071 Kokori et al. 2023
Host Star log(g) 4.196 0.029 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 1.564 0.021 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 6387.0 38.0 K Kokori et al. 2023
a/Rs 4.84 0.05 Kokori et al. 2023
eccentricity 0.0 Alsubai et al. 2019
inclination [degrees] 89.0 1.0 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 2.03202332 3.3e-07 day Kokori et al. 2023
Rp 19.06 0.34 R_Earth Alsubai et al. 2019
Rp/Rs 0.1108 0 ExoFOP-TESS TOI
ephemeris [JD] 2458303.419733 9.3e-05 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2458303.419733 9.3e-05 BJD-TDB Kokori et al. 2023
2458063.64145 0.00018 BJD-TDB Ivshina & Winn 2022
2458043.32075 0.00016 Alsubai et al. 2019
2459853.85413 0.00074008 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001018
Parameter Value Uncertainty
Am1 1.0256 0.0086
Am2 -0.022 0.014
a/Rs 5.01 0.14
Rp/Rs 0.114 0.025
ephemeris [JD] 2459532.7857 0.0067
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.5513147123330397
u1 -4.557392075954147
u2 4.648715909590795
u3 -1.6426384766984223
duration 0.1057 0.0054
Not 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 0001747
Parameter Value Uncertainty
Am1 0.9914 0.006
Am2 0.0059 0.002
a/Rs 4.76 0.12
Rp/Rs 0.1048 0.005
ephemeris [JD] 2459788.8259 0.0022
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.1491607985028454
u1 -3.9011321170905564
u2 4.36484579229747
u3 -1.612874408668489
duration 0.1512 0.004
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CV Clear (unfiltered) reduced to V sequence 350.0 nm 850.0 nm
Organization Observer Code Secondary Observers
AAVSO MBEB (collaborate/publish)
Light curve chart for 0001995
Parameter Value Uncertainty
Am1 0.795 0.011
Am2 0.231 0.058
a/Rs 4.64 0.15
Rp/Rs 0.158 0.0096
ephemeris [JD] 2459849.804 0.0049
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.149082167763142
u1 -3.900808285750008
u2 4.3643905726206125
u3 -1.6126643895992583
duration 0.1022 0.0057
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
CV Clear (unfiltered) reduced to V sequence 350.0 nm 850.0 nm
Organization Observer Code Secondary Observers
AAVSO NANF (collaborate/publish)
Light curve chart for 0004691
Parameter Value Uncertainty
Am1 1.0144 0.006
Am2 -0.01 0.0075
a/Rs 4.66 0.14
Rp/Rs 0.067 0.011
ephemeris [JD] 2460225.715 0.0073
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.510436835570131
u1 -4.418873355938068
u2 4.48774185149386
u3 -1.579305264253358
duration 0.1489 0.005
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 9bf286e8643b9f4ff346c4882c069b24
Parameter Value Uncertainty
Am1 1.0001 0.0034
Am2 0
a/Rs 4.952 0.089
Rp/Rs 0.0928 0.0022
ephemeris [JD] 2459876.207 0.0014
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.844584915214742
u1 -5.073601110830165
u2 4.915428582608974
u3 -1.6864123137479576
duration 0.1429 0.0026
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for d492f3f20932d47fa6124200cf35f986
Parameter Value Uncertainty
Am1 0.9999 0.0033
Am2 0
a/Rs 4.712 0.086
Rp/Rs 0.0945 0.002
ephemeris [JD] 2459874.1745 0.0014
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.846233022356155
u1 -5.081032957134495
u2 4.925455289117679
u3 -1.690655280944335
duration 0.1508 0.0029
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 10ac6db85874e06f2e2f78cf29228dbb
Parameter Value Uncertainty
Am1 1.0001 0.0034
Am2 0
a/Rs 5.059 0.069
Rp/Rs 0.098 0.002
ephemeris [JD] 2459859.9514 0.0013
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.844900668227066
u1 -5.075215882362275
u2 4.917737380238191
u3 -1.6874220928229842
duration 0.1414 0.002
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 970c0555c99f29ff70f2906c33527fce
Parameter Value Uncertainty
Am1 1.0005 0.0036
Am2 0
a/Rs 4.876 0.095
Rp/Rs 0.0972 0.0023
ephemeris [JD] 2459853.8531 0.0014
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8450848766650347
u1 -5.076069210335839
u2 4.918880142799049
u3 -1.6878957358312192
duration 0.1461 0.003
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 6d2f9f22499ff688d59288c404c64328
Parameter Value Uncertainty
Am1 1.0 0.0035
Am2 0
a/Rs 4.887 0.088
Rp/Rs 0.094 0.0022
ephemeris [JD] 2459880.2706 0.0013
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.844407496560426
u1 -5.073348045758053
u2 4.915387243441268
u3 -1.6864466209986642
duration 0.1461 0.0027
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for aecb2bcc8067867ef6687dab38a3381c
Parameter Value Uncertainty
Am1 1.0001 0.0034
Am2 0
a/Rs 4.8 0.1
Rp/Rs 0.0949 0.0022
ephemeris [JD] 2459861.9803 0.0015
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8458476439715836
u1 -5.078625300888443
u2 4.921820609225064
u3 -1.6890428789673617
duration 0.1485 0.0031
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 15f6bb12baa0ab300a98ddc677b9bb64
Parameter Value Uncertainty
Am1 1.0002 0.0035
Am2 0
a/Rs 5.012 0.083
Rp/Rs 0.096 0.0023
ephemeris [JD] 2459872.1414 0.0013
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8448698606265004
u1 -5.074958875582985
u2 4.917326309759159
u3 -1.6872372215288025
duration 0.1421 0.0024
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 22916f7df8f2ad28231f5843622ee672
Parameter Value Uncertainty
Am1 1.0007 0.0037
Am2 0
a/Rs 5.078 0.081
Rp/Rs 0.0974 0.0023
ephemeris [JD] 2459857.9204 0.0016
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8461295224003553
u1 -5.08000666536328
u2 4.923733891923902
u3 -1.6898566755916251
duration 0.1406 0.0022
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 14974459455bff3e87a103eb134fd191
Parameter Value Uncertainty
Am1 1.0 0.0035
Am2 0
a/Rs 4.93 0.11
Rp/Rs 0.0957 0.0022
ephemeris [JD] 2459878.2383 0.0016
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.845479680377145
u1 -5.077512721262797
u2 4.920593645237296
u3 -1.6885605310290845
duration 0.1445 0.0034
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for 694b6de02a1b0b5fbe080f4158acf447
Parameter Value Uncertainty
Am1 1.0001 0.0034
Am2 0
a/Rs 5.042 0.073
Rp/Rs 0.102 0.002
ephemeris [JD] 2459855.8877 0.0012
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8442679416918457
u1 -5.072465236662262
u2 4.914018516283524
u3 -1.6858211480885261
duration 0.1421 0.0021
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for bb319f4bf0f61d80182ff81ec02d8913
Parameter Value Uncertainty
Am1 1.0006 0.0035
Am2 0
a/Rs 4.965 0.09
Rp/Rs 0.0977 0.0022
ephemeris [JD] 2459868.0773 0.0014
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8440520542202163
u1 -5.071761239435436
u2 4.913262243040403
u3 -1.6855529846118706
duration 0.144 0.0028
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)
Light curve chart for f374643935ee8aaf0afe3bd8e450b3d9
Parameter Value Uncertainty
Am1 1.0002 0.0035
Am2 0
a/Rs 4.84 0.12
Rp/Rs 0.0959 0.0024
ephemeris [JD] 2459870.1103 0.0019
eccentricity 0.0
inclination [degrees] 89.0
omega [degrees] 0.0
orbital period [days] 2.03202332
u0 2.8443803197320183
u1 -5.07304608060595
u2 4.914845666646261
u3 -1.6861798325354216
duration 0.1471 0.0038
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
I Cousins I 721.0 nm 875.0 nm
Organization Observer Code Secondary Observers
EPW TESS (collaborate/publish)