results

XO-5 b

Timing Plot

Total Reductions to Date: 12

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 4.1877571188696985 2.9963946933661675e-07
Ephemeris (BJD_TDB) 2460017.694777219 0.0002821589897892212
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 116.7163868 decimal
DEC 39.0944695 decimal
Host Star Metallicity 0.25 0.03 Kokori et al. 2023
Host Star log(g) 4.52 0.06 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 1.11 0.09 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 5510.0 44.0 K Kokori et al. 2023
a/Rs 9.85 0.03 Kokori et al. 2023
eccentricity 0.0 0.014 Ment et al. 2018
inclination [degrees] 86.8 0.2 deg Kokori et al. 2023
omega [degrees] 331.01 0.72 deg Ment et al. 2018
orbital period [days] 4.18775631 4.9e-07 day Kokori et al. 2023
Rp 11.77 0.63 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1068 0 ExoFOP-TESS TOI
ephemeris [JD] 2456399.47297 0.00026 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454485.6664 0.0004 HJD Burke et al. 2008
2454552.67168 0.00029 BJD Pal et al. 2009
2455218.5258 0.00045 BJD-TDB Ivshina & Winn 2022
2455469.7912 0.0003 BJD-TDB Kokori et al. 2022
2456399.47297 0.00026 BJD-TDB Kokori et al. 2023
2456864.31328 0.00021500000000000002 BJD-TDB, HJD-UTC Bonomo et al. 2017, Smith 2015
2459582.167296 0.00054627 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0007497
Parameter Value Uncertainty
Am1 1.037 0.016
Am2 -0.036 0.074
a/Rs 9.999 0.087
Rp/Rs 0.212 0.056
ephemeris [JD] 2458187.647 0.0095
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 1.6472440879833967
u1 -2.841933271895343
u2 3.470892965173302
u3 -1.2762037295410198
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 CCHG (collaborate/publish) MOBS
Light curve chart for 0005120
Parameter Value Uncertainty
Am1 1.178 0.013
Am2 -0.161 0.038
a/Rs 9.9 0.085
Rp/Rs 0.0 0.023
ephemeris [JD] 2458543.622 0.013
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 1.6464553768519068
u1 -2.839157240881703
u2 3.467505122720049
u3 -1.2748032070203994
duration 0.086 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 TARB (collaborate/publish) MOBS
Light curve chart for 0007530
Parameter Value Uncertainty
Am1 0.342 0.05
Am2 1.0 0.11
a/Rs 9.896 0.087
Rp/Rs 0.004 0.041
ephemeris [JD] 2458543.613 0.012
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 1.9175926249497153
u1 -3.3899211533263274
u2 3.859865547464018
u3 -1.3875369615709277
duration 0.079 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
CV MObs CV 350.0 nm 850.0 nm
Organization Observer Code Secondary Observers
AAVSO SAAI (collaborate/publish) MOBS
Light curve chart for 0010663
Parameter Value Uncertainty
Am1 1.0314 0.0099
Am2 -0.031 0.04
a/Rs 9.983 0.087
Rp/Rs 0.06 0.025
ephemeris [JD] 2458543.583 0.012
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 1.9169417213746593
u1 -3.387015385422757
u2 3.8559994218071494
u3 -1.3859257003001826
duration 0.047 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
CV Clear (unfiltered) reduced to V sequence 350.0 nm 850.0 nm
Organization Observer Code Secondary Observers
AAVSO GMAU (collaborate/publish)
Light curve chart for 0005087
Parameter Value Uncertainty
Am1 1.0184 0.0044
Am2 -0.0158 0.0027
a/Rs 9.702 0.058
Rp/Rs 0.1127 0.0023
ephemeris [JD] 2459175.96099 0.00077
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 2.4103468804110495
u1 -4.195143559266568
u2 4.272611104290664
u3 -1.4878143617682777
duration 0.1339 0.0011
Included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
Filter Detail Min Max
SI Sloan i 697.5 nm 827.5 nm
Organization Observer Code Secondary Observers
AAVSO BJNA (collaborate/publish) BPAG
Light curve chart for 0000598
Parameter Value Uncertainty
Am1 0.9855 0.0054
Am2 0.014 0.014
a/Rs 9.844 0.082
Rp/Rs 0.1046 0.0039
ephemeris [JD] 2459280.651 0.0015
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 1.917149197006138
u1 -3.388038552835676
u2 3.857499870540489
u3 -1.3866104572297235
duration 0.1302 0.0015
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 MWAA (collaborate/publish)
Light curve chart for 0002986
Parameter Value Uncertainty
Am1 0.9584 0.0055
Am2 0.0378 0.0071
a/Rs 9.843 0.082
Rp/Rs 0.0956 0.0049
ephemeris [JD] 2460017.6927 0.0016
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 1.9168568001174227
u1 -3.3867364527567454
u2 3.8555679328992336
u3 -1.3856882228074716
duration 0.1287 0.0016
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 MBEB (collaborate/publish)
Light curve chart for 3364631840d837823926b9af45a67abd
Parameter Value Uncertainty
Am1 0.9998 0.0023
Am2 0
a/Rs 9.712 0.067
Rp/Rs 0.1036 0.0016
ephemeris [JD] 2459586.35318 0.00092
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 2.5174027628589664
u1 -4.41315600191934
u2 4.4305658943510675
u3 -1.5348125892701172
duration 0.1319 0.0012
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 0b5cabdd051b72ee4561c8060278e253
Parameter Value Uncertainty
Am1 1.0 0.0021
Am2 0
a/Rs 9.902 0.078
Rp/Rs 0.1006 0.0015
ephemeris [JD] 2459590.54283 0.00091
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 2.5177234577836494
u1 -4.414078897549224
u2 4.43155043509703
u3 -1.5351949292962077
duration 0.1287 0.0014
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 d4a2e70b9e64cbfe75402385c8b8b8eb
Parameter Value Uncertainty
Am1 1.0001 0.0023
Am2 0
a/Rs 9.93 0.075
Rp/Rs 0.1008 0.0016
ephemeris [JD] 2459582.16805 0.00094
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 2.517558068200999
u1 -4.413439807558808
u2 4.430790087101083
u3 -1.534908281719356
duration 0.1281 0.0014
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 b44aa2bd3a1d5f5bdaf461386521af00
Parameter Value Uncertainty
Am1 1.0 0.0021
Am2 0
a/Rs 9.92 0.073
Rp/Rs 0.1018 0.0016
ephemeris [JD] 2459598.91773 0.00088
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 2.517186813363832
u1 -4.412305176880608
u2 4.429503233086388
u3 -1.5343848035648708
duration 0.1287 0.0014
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 42529e1450f750d21252f3671f47e42b
Parameter Value Uncertainty
Am1 1.0001 0.0022
Am2 0
a/Rs 9.847 0.079
Rp/Rs 0.1002 0.0016
ephemeris [JD] 2459603.10695 0.00093
eccentricity 0.0
inclination [degrees] 86.8
omega [degrees] 331.01
orbital period [days] 4.18775631
u0 2.517662924138408
u1 -4.414239485943985
u2 4.431968712588516
u3 -1.5353920847414582
duration 0.1297 0.0014
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)