results

K2-34 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) 2.9956360877193235 2.625953553523464e-07
Ephemeris (BJD_TDB) 2460256.8127802713 0.00020352037289195183
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 127.5787231 decimal
DEC 22.2359194 decimal
Host Star Metallicity 0.15 0.04 Kokori et al. 2023
Host Star log(g) 4.106 0.075 Log10(cgs) Kokori et al. 2023
Host Star Radius [R_Sun] 1.66 0.19 Sol Kokori et al. 2023
Host Star Effective Temperature [K] 6087.0 38.0 K Kokori et al. 2023
a/Rs 6.7 0.4 Kokori et al. 2023
eccentricity 0.0 Stassun et al. 2017
inclination [degrees] 83.0 0.7 deg Kokori et al. 2023
omega [degrees] 0.0 deg Kokori et al. 2023
orbital period [days] 2.99563536 2.5e-07 day Kokori et al. 2023
Rp 13.75 0.58 R_Earth Castro-González et al. 2022
Rp/Rs 0.0866 0 Kruse et al. 2019
ephemeris [JD] 2457851.317006 5.2e-05 BJD-TDB Kokori et al. 2023

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2457851.317006 5.2e-05 BJD-TDB Kokori et al. 2023
2460256.812967 0.0002002 BJD ExoFOP-TESS TOI

Observations

Light curve chart for 0001256
Parameter Value Uncertainty
Am1 0.933 0.01
Am2 0.0616 0.0053
a/Rs 8.69 1.25
Rp/Rs 0.108 0.022
ephemeris [JD] 2459642.686 0.012
eccentricity 0.0
inclination [degrees] 83.0
omega [degrees] 0.0
orbital period [days] 2.99563536
u0 2.0541418808925584
u1 -3.7800954080286195
u2 4.328732894347055
u3 -1.6027793027078467
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
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 0001264
Parameter Value Uncertainty
Am1 0.9555 0.0063
Am2 0.043 0.022
a/Rs 8.67 0.77
Rp/Rs 0.145 0.041
ephemeris [JD] 2459645.706 0.0085
eccentricity 0.0
inclination [degrees] 83.0
omega [degrees] 0.0
orbital period [days] 2.99563536
u0 2.4514094947633027
u1 -4.418889658542703
u2 4.610343478463783
u3 -1.6428632459849104
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
CBB Astrodon ExoPlanet-BB 500.0 nm 1000.0 nm
Organization Observer Code Secondary Observers
AAVSO LPAC (collaborate/publish)
Light curve chart for 0001290
Parameter Value Uncertainty
Am1 1.2709 0.0055
Am2 -0.201 0.033
a/Rs 6.44 0.12
Rp/Rs 0.1729 0.009
ephemeris [JD] 2459654.6823 0.0011
eccentricity 0.0
inclination [degrees] 83.0
omega [degrees] 0.0
orbital period [days] 2.99563536
u0 2.392931660805282
u1 -4.236108128729043
u2 4.409950685302349
u3 -1.5667741516652023
duration 0.1304 0.0048
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 0001405
Parameter Value Uncertainty
Am1 0.9424 0.007
Am2 0.057 0.024
a/Rs 5.72 0.9
Rp/Rs 0.094 0.029
ephemeris [JD] 2459666.69 0.012
eccentricity 0.0
inclination [degrees] 83.0
omega [degrees] 0.0
orbital period [days] 2.99563536
u0 2.7109385250756812
u1 -4.831833203718963
u2 4.77237216963008
u3 -1.6514774198729114
duration 0.065 0.019
Not 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 RWEA (collaborate/publish)
Light curve chart for 0001406
Parameter Value Uncertainty
Am1 0.9983 0.0053
Am2 0.0 0.0056
a/Rs 6.54 0.27
Rp/Rs 0.1078 0.0089
ephemeris [JD] 2459693.6363 0.0053
eccentricity 0.0
inclination [degrees] 83.0
omega [degrees] 0.0
orbital period [days] 2.99563536
u0 2.710200232088002
u1 -4.8289450337738185
u2 4.768614448803827
u3 -1.649869576060119
duration 0.1092 0.0079
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 RWEA (collaborate/publish)