results

XO-2 N b

Timing Plot

Total Reductions to Date: 22

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

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) 2.6158597288372594 5.2617088921563385e-08
Ephemeris (BJD_TDB) 2460051.7456230693 7.816607550761409e-05
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 117.0267691 decimal
DEC 50.2251472 decimal
Host Star Metallicity 0.43 0.05 Bonomo et al. 2017
Host Star log(g) 4.32 0.1 Log10(cgs) ExoFOP-TESS TOI
Host Star Radius [R_Sun] 1.08 0.08 Sol ExoFOP-TESS TOI
Host Star Effective Temperature [K] 5340.0 32.0 K Yalçınkaya et al. 2024
a/Rs 7.93 0.1 Kokori et al. 2023
eccentricity 0.006 0.038 Bonomo et al. 2017
inclination [degrees] 88.0 0.4 deg Kokori et al. 2023
omega [degrees] 261.0 11.0 deg Knutson et al. 2014
orbital period [days] 2.615859462 5.4e-08 day Yalçınkaya et al. 2024
Rp 13.12 0.95 R_Earth ExoFOP-TESS TOI
Rp/Rs 0.1156 0 ExoFOP-TESS TOI
ephemeris [JD] 2458843.218463 6.9e-05 BJD-TDB Yalçınkaya et al. 2024

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2454466.88467 0.00012 HJD Fernandez et al. 2009
2454508.73829 0.00014 HJD Crouzet et al. 2012
2455139.16092 0.00013 BJD-TDB Baluev et al. 2015
2455565.54648 5.4e-05 BJD-TDB Bonomo et al. 2017, Damasso et al. 2015
2456737.45107 0.0002 BJD-TDB Ivshina & Winn 2022
2456923.17711 0.00015 BJD-TDB Kokori et al. 2022
2457417.57469 0.00013 BJD-TDB Kokori et al. 2023
2458843.218463 6.9e-05 BJD-TDB Yalçınkaya et al. 2024
2459957.574412 0.0002035 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0000570
Parameter Value Uncertainty
Am1 0.9778 0.004
Am2 0.021 0.013
a/Rs 8.05 0.16
Rp/Rs 0.0992 0.0033
ephemeris [JD] 2458908.6156 0.001
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 1.8440685508035084
u1 -3.1046827344478265
u2 3.438274015150709
u3 -1.177659780272116
duration 0.111 0.0024
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 0002165
Parameter Value Uncertainty
Am1 1.089 0.014
Am2 -0.079 0.016
a/Rs 8.17 0.28
Rp/Rs 0.142 0.019
ephemeris [JD] 2459907.8659 0.005
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.431976379045892
u1 -4.158548033535738
u2 4.130548908797109
u3 -1.4039771927572877
duration 0.1137 0.0047
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
AAVSO LPAC (collaborate/publish)
Light curve chart for 0002474
Parameter Value Uncertainty
Am1 1.0336 0.0034
Am2 -0.0308 0.0064
a/Rs 8.12 0.24
Rp/Rs 0.1126 0.0023
ephemeris [JD] 2459965.4191 0.0016
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 1.844369440545162
u1 -3.1060129004200423
u2 3.439979855194572
u3 -1.1783363440599977
duration 0.1112 0.0036
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 HMAK (collaborate/publish)
Light curve chart for 0003306
Parameter Value Uncertainty
Am1 1.0087 0.0054
Am2 -0.0053 0.0014
a/Rs 7.55 0.18
Rp/Rs 0.1045 0.004
ephemeris [JD] 2460051.7465 0.0018
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 1.8442263044697877
u1 -3.1053777598942998
u2 3.439227136313499
u3 -1.1780756296405088
duration 0.1194 0.0032
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 520f83fa882f47a4cb53939bef9b17c3
Parameter Value Uncertainty
Am1 0.9997 0.003
Am2 0
a/Rs 7.99 0.17
Rp/Rs 0.0973 0.0025
ephemeris [JD] 2458866.7614 0.0011
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4313192253209794
u1 -4.156324717143851
u2 4.127931915206771
u3 -1.4029263618729204
duration 0.1115 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 851b207a4c1b1377f0ce24285c46339c
Parameter Value Uncertainty
Am1 1.0006 0.0024
Am2 0
a/Rs 8.01 0.17
Rp/Rs 0.0974 0.0022
ephemeris [JD] 2458845.8342 0.0012
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.43129569589217
u1 -4.156407437494945
u2 4.128111012131099
u3 -1.402999209014677
duration 0.111 0.0025
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 9ffdadcb77eaac2835292e94d31a3c62
Parameter Value Uncertainty
Am1 1.0001 0.0022
Am2 0
a/Rs 7.97 0.16
Rp/Rs 0.0929 0.002
ephemeris [JD] 2459588.7376 0.001
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4319136984295704
u1 -4.1587761878433644
u2 4.131095553136786
u3 -1.404233002164871
duration 0.1114 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 aa77e654b5acf5d63b630356cb3c0cae
Parameter Value Uncertainty
Am1 0.9996 0.0025
Am2 0
a/Rs 7.84 0.18
Rp/Rs 0.0929 0.0022
ephemeris [JD] 2459586.1218 0.0012
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4308513810046417
u1 -4.1549720245138975
u2 4.1263965038698
u3 -1.4022757988724441
duration 0.1135 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 c4dc3c1d8c07dec4d53bb37390effc7a
Parameter Value Uncertainty
Am1 1.0003 0.0032
Am2 0
a/Rs 8.24 0.15
Rp/Rs 0.0975 0.0025
ephemeris [JD] 2458851.0672 0.0012
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4307898884953936
u1 -4.154882786084352
u2 4.126375308251838
u3 -1.4022823491750955
duration 0.1081 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 d0e060769d1461705a11c127d7882363
Parameter Value Uncertainty
Am1 1.0011 0.0038
Am2 0
a/Rs 7.97 0.23
Rp/Rs 0.0967 0.0029
ephemeris [JD] 2458843.2181 0.0016
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4313779598804586
u1 -4.1568427784904385
u2 4.1287469663220735
u3 -1.40328208618897
duration 0.1119 0.0035
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 3869ba247d61acbf064d69cfc8c1d4a4
Parameter Value Uncertainty
Am1 1.0003 0.002
Am2 0
a/Rs 7.87 0.15
Rp/Rs 0.0945 0.0019
ephemeris [JD] 2459591.35414 0.00096
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.431797057065261
u1 -4.157757998277439
u2 4.1294318702616
u3 -1.4034708675160918
duration 0.1131 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 98ad5c1da37e715eb71a814bd699b7c9
Parameter Value Uncertainty
Am1 0.9995 0.0039
Am2 0
a/Rs 8.27 0.2
Rp/Rs 0.0962 0.003
ephemeris [JD] 2458853.6809 0.0017
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.430408205767496
u1 -4.153155989587946
u2 4.124169430400101
u3 -1.4014215851247367
duration 0.1073 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 acef8416a41d2d49e40e7433bfb6c6a7
Parameter Value Uncertainty
Am1 1.0056 0.0026
Am2 0
a/Rs 8.08 0.18
Rp/Rs 0.0929 0.0024
ephemeris [JD] 2459596.5855 0.0013
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4306952894480593
u1 -4.154487816033094
u2 4.125897557418282
u3 -1.4021049693525836
duration 0.1098 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 4926fd7174e089ae59508782430618a4
Parameter Value Uncertainty
Am1 1.0034 0.0028
Am2 0
a/Rs 7.94 0.18
Rp/Rs 0.095 0.0023
ephemeris [JD] 2459580.8914 0.0012
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4313698569021005
u1 -4.1566247062123916
u2 4.128334478814259
u3 -1.4030795679869899
duration 0.1123 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 e28dcccbe3d78082e9360bcc88be04eb
Parameter Value Uncertainty
Am1 0.9999 0.0018
Am2 0
a/Rs 7.95 0.15
Rp/Rs 0.0925 0.0019
ephemeris [JD] 2459583.50651 0.00097
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.430509182097184
u1 -4.153775660699382
u2 4.125051392254543
u3 -1.401784852184289
duration 0.1119 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 b860ee5b00c2de77bb232db6f1774889
Parameter Value Uncertainty
Am1 1.0017 0.0032
Am2 0
a/Rs 8.0 0.2
Rp/Rs 0.0968 0.0027
ephemeris [JD] 2458858.9121 0.0014
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4312783561682494
u1 -4.156617716678197
u2 4.128524479178623
u3 -1.4031850571488667
duration 0.1114 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 2b19f46d6fb065d3b1dba5dd03e729cc
Parameter Value Uncertainty
Am1 1.0005 0.0018
Am2 0
a/Rs 7.98 0.14
Rp/Rs 0.095 0.0018
ephemeris [JD] 2459604.43261 0.0009
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.430995284966259
u1 -4.155056935735973
u2 4.126289304219884
u3 -1.4022275919636673
duration 0.1114 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 f9cef661ab993543e0870149ceb53846
Parameter Value Uncertainty
Am1 1.0003 0.002
Am2 0
a/Rs 8.0 0.15
Rp/Rs 0.0941 0.002
ephemeris [JD] 2459601.8175 0.00092
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4314771835749895
u1 -4.156746150099368
u2 4.128355886063111
u3 -1.4030868580214357
duration 0.111 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 790ce73601f6a8f2dc4b11d9d67ed04b
Parameter Value Uncertainty
Am1 0.9997 0.0041
Am2 0
a/Rs 8.42 0.19
Rp/Rs 0.0944 0.0034
ephemeris [JD] 2458848.4515 0.002
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.430887526770546
u1 -4.155214456877976
u2 4.126860360773616
u3 -1.402533369171175
duration 0.1049 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 683b42744df83d240638ea26775412b5
Parameter Value Uncertainty
Am1 1.0004 0.0032
Am2 0
a/Rs 7.93 0.19
Rp/Rs 0.0946 0.0025
ephemeris [JD] 2458864.1458 0.0013
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.431785863296194
u1 -4.158277320993944
u2 4.130344687652826
u3 -1.4038531684081441
duration 0.1123 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 c8204725207d003a41a793bcee0ae74c
Parameter Value Uncertainty
Am1 0.9998 0.0029
Am2 0
a/Rs 8.23 0.16
Rp/Rs 0.0956 0.0024
ephemeris [JD] 2458861.5293 0.0012
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.4299779311972
u1 -4.1512822100241795
u2 4.1216583831785405
u3 -1.4003540429340648
duration 0.1078 0.0023
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 fd0ad627ebe11a582f27097da12b9281
Parameter Value Uncertainty
Am1 1.0 0.0018
Am2 0
a/Rs 7.84 0.16
Rp/Rs 0.0934 0.0019
ephemeris [JD] 2459599.2012 0.0011
eccentricity 0.006
inclination [degrees] 88.0
omega [degrees] 261.0
orbital period [days] 2.615859462
u0 2.432322294405811
u1 -4.160087418868776
u2 4.132613773899447
u3 -1.4048485878557377
duration 0.1131 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)